6 Speed RWD Technician's Guide

HYDRA-MATIC 6 Speed RWD

Litho in U.S.A.

TECHNICIAN'S GUIDE

October 2005 GENERAL MOTORS CORPORATION 2M

HYDRA-MATIC 6 Speed RWD TECHNICIAN'S GUIDE

PREFACE The Hydra-matic 6 Speed RWD Technician’s Guide is intended for automotive technicians that are familiar with the operation of an automatic transaxle or transmission. Technicians or other persons not having automatic transaxle or transmission know-how may find this publication somewhat technically complex if additional instruction is not provided. Since the intent of this book is to explain the fundamental mechanical, hydraulic and electrical operating principles, technical terms used herein are specific to the transmission industry. However, words commonly associated with the specific transaxle or transmission function have been defined in a Glossary rather than within the text of this book. The Hydra-matic 6 Speed RWD Technician’s Guide is also intended to assist technicians during the service, diagnosis and repair of this transmission. However, this book is not intended to be a substitute for other General Motors service publications that are normally used on the job. Since there is a wide range of repair procedures and technical specifications specific to certain vehicles and transmission models, the proper service publication must be referred to when servicing the Hydramatic 6 Speed RWD transmission.

© COPYRIGHT 2005 POWERTRAIN GROUP General Motors Corporation ALL RIGHTS RESERVED

All information contained in this book is based on the latest data available at the time of publication approval. The right is reserved to make product or publication changes, at any time, without notice. No part of any GM Powertrain publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Powertrain Group of General Motors Corporation. This includes all text, illustrations, tables and charts.

1

HYDRA-MATIC

6 Speed RWD CONTENTS INTRODUCTION ......................................................................................................... 3 HOW TO USE THIS BOOK ......................................................................................... 4 UNDERSTANDING THE GRAPHICS .......................................................................... 6 TRANSMISSION CUTAWAY VIEW (FOLDOUT) ........................................................ 8 GENERAL DESCRIPTION ......................................................................................... 9 PRINCIPLES OF OPERATION ................................................................................ 9A MAJOR MECHANICAL COMPONENTS (FOLDOUT) .................................... 10 RANGE REFERENCE CHART ........................................................................ 11 TORQUE CONVERTER ................................................................................... 12 APPLY COMPONENTS ................................................................................... 17 PLANETARY GEARSETS ............................................................................... 25 HYDRAULIC CONTROL COMPONENTS ....................................................... 28 ELECTRICAL COMPONENTS ........................................................................ 39 POWER FLOW .......................................................................................................... 49 COMPLETE HYDRAULIC CIRCUITS ....................................................................... 75 LUBRICATION POINTS .......................................................................................... 100 BUSHING AND BEARING LOCATIONS ................................................................ 101 SEAL LOCATIONS ................................................................................................. 102 ILLUSTRATED PARTS LIST .................................................................................. 103 BASIC SPECIFICATIONS ...................................................................................... 118 PRODUCT DESIGNATION SYSTEM ...................................................................... 119 GLOSSARY ............................................................................................................ 120 ABBREVIATIONS ................................................................................................... 122 INDEX ..................................................................................................................... 123

2

INTRODUCTION The Hydra-matic 6 Speed RWD Technician’s Guide is another Powertrain publication from the Technician’s Guide series of books. The purpose of this publication, as is the case with other Technician’s Guides, is to provide complete information on the theoretical operating characteristics of this transmission. Operational theories of the mechanical, hydraulic and electrical components are presented in a sequential and functional order to better explain their operation as part of the system. In the first section of this book entitled “Principles of Operation”, detailed explanations of the major components and their functions are presented. In every situation possible, text describes component operation during the apply and release cycle as well as situations where it has no effect at all. The descriptive text is then supported by numerous graphic illustrations to further emphasize the operational theories presented. The second major section entitled “Power Flow”, blends the information presented in the “Principles of Operation” section into the complete transmission assembly. The transfer of torque from the engine through the transmission is graphically displayed on a full page while a narrative description is provided on a facing half page. The opposite side of the half page contains the narrative description of the hydraulic

fluid as it applies components or shifts valves in the system. Facing this partial page is a hydraulic schematic that shows the position of valves, ball check valves, etc., as they function in a specific gear range. The third major section of this book displays the “Complete Hydraulic Circuit” for specific gear ranges. Fold-out pages containing fluid flow schematics and two dimensional illustrations of major components graphically display hydraulic circuits. This information is extremely useful when tracing fluid circuits for learning or diagnosis purposes. The “Appendix” section of this book provides additional transmission information regarding lubrication circuits, seal locations, illustrated parts lists and more. Although this information is available in current model year Service Manuals, its inclusion provides for a quick reference guide that is useful to the technician. Production of the Hydra-matic 6 Speed RWD Technician’s Guide was made possible through the combined efforts of many staff areas within the General Motors Powertrain Division. As a result, the Hydra-matic 6 Speed RWD Technician’s Guide was written to provide the user with the most current, concise and usable information available regarding this product.

3

HOW TO USE THIS BOOK specific fluid circuits that enable the mechanical components to operate. The mechanical power flow is graphically displayed on a full size page and is followed by a half page of descriptive text. The opposite side of the half page contains the narrative description of the hydraulic fluid as it applies components or moves valves in the system. Facing this partial page is a hydraulic schematic which shows the position of valves, ball check valves, etc., as they function in a specific gear range. Also, located at the bottom of each half page is a reference to the Complete Hydraulic Circuit section that follows.

First time users of this book may find the page layout a little unusual or perhaps confusing. However, with a minimal amount of exposure to this format its usefulness becomes more obvious. If you are unfamiliar with this publication, the following guidelines are helpful in understanding the functional intent for the various page layouts: •

Read the following section, “Understanding the Graphics” to know how the graphic illustrations are used, particularly as they relate to the mechanical power flow and hydraulic controls (see Understanding the Graphics page 6).

•

Unfold the cutaway illustration of the Hydramatic 6 Speed RWD (page 8) and refer to it as you progress through each major section. This cutaway provides a quick reference of component location inside the transmission assembly and their relationship to other components.

•

The Principles of Operation section (beginning on page 9A) presents information regarding the major apply components and hydraulic control components used in this transmission. This section describes “how” specific components work and interfaces with the sections that follow.

•

4

The Power Flow section (beginning on page 49) presents the mechanical and hydraulic functions corresponding to specific gear ranges. This section builds on the information presented in the Principles of Operation section by showing

•

The Complete Hydraulic Circuits section (beginning on page 75) details the entire hydraulic system. This is accomplished by using a fold-out circuit schematic with a facing page two dimensional fold-out drawing of each component. The circuit schematics and component drawings display only the fluid passages for that specific operating range.

•

Finally, the Appendix section contains a schematic of the lubrication flow through the transmission, disassembled view parts lists and transmission specifications. This information has been included to provide the user with convenient reference information published in the appropriate vehicle Service Manuals. Since component parts lists and specifications may change over time, this information should be verified with Service Manual information.

HOW TO USE THIS BOOK

LARGE CUTAWAY VIEW OF TRANSMISSION (FOLDOUT)

HALF PAGE TEXT FOR EASY REFERENCE TO BOTH PAGES

RANGE REFERENCE CHART

RK ) PA nning

➤

(En

6 Speed RWD

(Engine Running)

1-2-3-4 CLUTCH

➤

INPUT SUN GEAR (53)

INPUT 2-6 3-5 REVERSE CARRIER CLUTCH CLUTCH ASSEMBLY (52)

CENTER SUPPORT ASSEMBLY (67)

TORQUE CONVERTER ASSEMBLY (1)

LO AND REVERSE CLUTCH

OUTPUT CARRIER ASSEMBLY (68)

LO CLUTCH SPRAG ASSEMBLY (467)

OUTPUT CARRIER REAR SUN GEAR (489)

OUTPUT SHAFT ASSEMBLY (70)

3 VEHICLE HELD STATIONARY (NO POWER TRANSMITTED TO OR FROM DIFFERENTIAL ASSEMBLY)

OUTPUT SHAFT ASSEMBLY (70) HELD

➤

➤

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

u

su mp tra pu Preses pu to the hen mand ulat rdingents. Wthe defrom accoirem ceeds, fluidr requut ex sure lato outp e presre regu of linpressu the

➤

➤

TORQUE CONVERTER FLUID PUMP HOUSING ASSEMBLY (2)

CONVERTER TURBINE ASSEMBLY

4 LOW AND REVERSE CLUTCH APPLIED*

2 POWERFLOW TERMINATED

eR

PARK (Engine Running) 3-5 REVERSE CLUTCH

➤

1 POWER FROM TORQUE CONVERTER (1)

gin

(P) Park l the e oi r in th leve fromwing: ctor sure follo sele pres the gthe line to 8): Re ) 1-2-3-4 Withsition, rected lve(21essure CLUTCH po p is di lator Va(line prion pum re Reguoutputnsmmissp

PARK

CENTER SUPPORT ASSEMBLY

2-6 CLUTCH ASSEMBLY

4-5-6 CLUTCH ASSEMBLY

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

1234 CLUTCH 35 REV CLUTCH COMP FEED 456 CLUTCH M

D N R

P

EX REVERSE

CBR CBR 1

LINE

➤

LINE

DRIVE

DRIVE

MANUAL VALVE

➤ ➤

LINE

CONTROL SOLENOID VALVE ASSEMBLY

1 ACT FD LIM

3a N.C.

SOL 1

EX

1-2-3-4 CLUTCH HUB ASSEMBLY (61)

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

DR PA AULI GE C 86 CIR CU

56

B

35 REV CL

EX

DRIVE EX

EX

1234 CL DFLT FD

CBR1/CBR FD

EX

REVERSE 456 CL FD

1234 CL DFLT 1234 CL DFLT FD

DRIVE BRAKE DRV B EX

456 CL

SOL 1

EX

EX

EX

SOL 1

EX BF

10

REG APPLY

SOL 1

EX

EX

PS4 EX

50

1234 CL FD

EX BACKFILL

COMPENSATOR FD REG VALVE

1234 CL FDBK

1234 CL DFLT PCS 1234 CL

ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

33

13

14

PCS 1234 CL

COMP FD

EX

PARK PAWL 2-6 AND ACTUATOR 3-5 REVERSE ASSEMBLY CLUTCH HUB (503) ASSEMBLY (64)

CONTROL VALVE INPUT AND ASSEMBLY OUTPUT SPEED (21) SENSOR ASSEMBLY (303)

34

35

LINE

MANUAL SHIFT SHAFT (508)

➤

1-2-3-4 AND 3-5 MANUAL SHAFT REVERSE CLUTCH DETENT LEVER ASSEMBLY ASSEMBLY (51) (505)

11

REG APPLY

1234 CL

1-2-3-4 CL REGULATOR VALVE

SHTL 36

COMP FD

CONVERTER PUMP ASSEMBLY

DRIVE

PCS LINE

EX 46

47

48

ACT FD LIM

PCS 35 REV CL

CONVERTER STATOR ASSEMBLY

9

TCC REGULATOR VALVE SHTL

PCS 35 REV CL

PRESSURE PLATE ASSEMBLY

PCS TCC

3b 45

ACT FD LIM

N.H. OFF

SOL 2

35 REV CL FDBK

35 REV CL

3-5 REV CL REGULATOR VALVE

LINE

N.H.

STATOR ROLLER CLUTCH

CBR

EX BF

SOL 2

SOL 2

4b

ACT FD LIM

C35R PRESSURE CONTROL SOLENOID 2

PARK PAWLCO ACTUATORMP LE ASSEMBLY TE (503) HY

#3

35 CL REV FD

35 CL REV FD

4c

SOL 2

PARK PAWL (502) ENGAGED

PS3 EX

PS1

N.C.

ON

INPUT SUN GEAR (53)

EX BF 26 CL

CBR 51

SHIFT SOL 2

4a

4d

20

CSV3 ENABLE

1

21

CLUTCH SELECT VALVE 3

456 CL

ACT FD LIM

ISOLATOR

N.C.

5

41

26 CL

2-6 GAIN

PCS 26 CL

PS1

49

26 CL/1234 CL FD

43

2-6 CLUTCH REG 44

REVERSE

456 CL 42

PCS 26 CL

N.L. OFF

LINE PRESSURE CONTROL SOLENOID

OUTPUT CARRIER FRONT SUN GEAR (487)

22

CBR1/CBR FD

CBR CBR 1

EXHAUST BACKFILL PRESSURE RELIEF VALVE 30

COMP FD

LINE

CB26 PRESSURE CONTROL SOLENOID 4

PCS LINE

OUTPUT SHAFT ASSEMBLY (70) HELD

LOW AND REV CLUTCH APPLIED*

ACT FD LIM

EX

COMP FD

OUTPUT CARRIER INTERNAL FRONT GEAR (495)

2a LINE 2A

DRIVE

EX BACKFILL

LINE 3

LINE

PRESSURE REGULATOR VALVE

DECREASE

2

DRIVE

LINE

26

CONV FD

CBR1/456 CL FD

CBR1/456 CL FD

LINE

N.H. ON

LINE

INPUT CARRIER ASSEMBLY (52)

OUTPUT CARRIER INTERNAL REAR GEAR (497)

DRIVE 1-6 CSV2 LATCH

456 CL BOOST VALVE

CBR1/C456 PRESSURE CONTROL SOLENOID 3

3c CLUTCH SELECT VALVE 2

EX

SOL 1

31

LINE

PS5

12

3d

CBR1/CBR FD

ACT FD LIM

CBR1 FDBK

EX

LINE

PCS TCC

37

35R FD ACT FD LIM

PARK PAWL (502)

PCS CBR1/456 CL

TORQUE CONVERTER (WITH FLUID PUMP) HOUSING ASSEMBLY (2)

TORQUE CONVERTER ASSEMBLY (1)

N.L. OFF

EX

EX EX BF CBR1/456 CL FD

CBR1/C456 CL REG VALVE

TCC PRESSURE CONTROL SOLENOID

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

DRIVE 1-6 ACT FD LIM

ACT FD LIM

LINE

38

39

4-5-6 CLUTCH (w/OUTPUT CARRIER SHAFT AND DAMPENER) HUB ASSEMBLY (58)

SOL 1

#2

2b COMP FD

ACT FD LIM

SOL 1

ACT FEED LIMIT VALVE

SOL 1

ON

CSV2 ENABLE

REVERSE

SHIFT SOL 1

COMP FD

PCS 1234 CL

N.L. OFF

IT

LINE

LINE

* APPLIED BUT CARRYING NO LOAD

8

Figure 6

Figure 53

Figure 52

56

57

PAGE NUMBER — FOR REFERENCE TO FLUID FLOW SCHEMATIC

FLUID FLOW SCHEMATIC — (FOLDOUT)

FLUID FLOW THROUGH COMPONENTS (FOLDOUT) RK g) PA nnin u eR gin (En

456 CL LUBE

LUBE

PCS 35 REV CL

456 CLUTCH BOOST VALVE

26 CL

26 CL

10 14 11 26 49

PS5

CBR 1 CBR

LUBE

LINE

ON

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

N.L. OFF

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

54b

37

12

51

30b

E

47

14 21

46

9

30

46

50

34

30

53

9

46

C

24 52

50

29 52

34 52 31 51

44

31

52 34

34 13

14 52

2

#1

43 31 51 48 51 50 2 21 51

2

Figure 82

35

2 52

51

➤ FRONT

➤ FRONT 52

12

47

#4

43

48 51 52

34 14 23 51 20 21 51 28

34

31 33 13 51 22 20

24 54 28 30 51 34 33

51 22

35 52

52

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

12

12 12 12

41

34j

36

34a

42a

24a

21a

28b/29b

34k 28a/29a

52

48

37c

12a 50

13d

12

48

50f

50g 47a 48b

44a 36a

37

2d

31

21e

32b 13e

12c

42

37b/53b

12e 12d

21d

43a 34l 35a 51

44

47b 34h 50e

42

34g 31a

31b

21c

32

2

44b 12f

29e

54a

12b

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

50d

37a/53a 44c

40

29d 30b/54b 30a 29c

34c 51 31c

47

52 52 52 2

45b

47

45a

32 38a 25a/44e 34i 44d

43

46b

11d

34

37d

25b/44f

14a

50

52

21

44

41a

25c

46a 19b 9b 19c 34f 20

23

45

52 31 52

43 13

34 12

12

18 34 44

29

54 21

37e

15a

34b 16a

13b

47

37 45 18

15b

18a

24e

26

50b 50c

38b 19a

24d

11e/50a

12g 45

50 34

52 9

25d 33

13c

13a 2c

51

29

36

39a 12h

12i

14b

24b

45

38

42

19 46 19

51

12

16 52 52

39c

35

26a 40a

34d

39b

17d 27b

50

51b

24c 17b

17a

37 52 39 37

44

34

13

11

2b

52 52

25

52

51

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 83

18 19

27a

26b

11

14

51a 49a

14c 38c

52 41

52

2

11b 11c

10b

12

40

15

13

52 52

11a

10a

38d

10c

50

52 38

17

52

52

17c

38e

21b

25

52

12

32 52

51

45

52

12 12

13

32

51 51

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

18

34

40

9

34e

39

12 49

34

9

52 52

20 52 20 52 52

#5

52

21

2

2

52 21 52 29

53

52

2a

10

38f

51

24

51 24

42 52 52

31 48 52

34

52 52

52 12

52 30

52 51 52

51

➤

38

12 52 29

12 52 52

51

52

52

52 52

44

51

51

41

2 16

19

29

12 39

#3

13

34 24 51

52 13 52

40

52 52 2 52

16

44

51

51

15

42

46 50

49

52 19

38 34

#7

#2

FRONT

J F

52 51

51

12

38

15

14 15 51

12 17

52

41

45

➤

FRONT

G

34 24 52

45

52

51

2

14

52 37

50

COMP

B

51

5

40

25

(36) TRA ENTS (40) NSMIS ( ) TRA (203 NSMIS SION FLU (213) CHECK VA SION FLU ID LEVEL (214) TRANSMIS LVE RETAI ID PRESS HOLE PLU (230) BRASS OR SION FLU NER AN URETES G D T TRA (232) NSMIS IFICE IN ID PUMP BALL AS PLUG SER SEM (233) ORIFICE SION VEN T SCREEN BLY SLE (306) ORIFICE EVE T ASSEMB ASSEMBLY CONT CUP PLU LY (#1 ROL G (308) , 2, 3, VALVE BO TCC 4, DY (312) PWM 5, 6, 7, 8, BALL PRESS SOLEN 9, 10, CHECK 11, VA FILTERURE CONTOID VALVE 12 LVE ASSE ROL FILTER 86 MBLY SOLEN AS B OID VA SEMB LVE LY

24 52 52 27

51

25

26

50 52 50

#6

A

12e

PRESSURE SWITCH 5 NORMALLY CLOSED

50

51

51 52

9a

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10 17

52 21

38

FRONT

K

➤

12f

12d

PCS 26 CL

ACT FD LIM

SOL 2

ACT FD LIM

PCS TCC

PS3

PS1 SOL 1

SHIFT SOL 1

N.L.

PCS LINE

PS4 CONTROL SOLENOID VALVE ASSEMBLY (314)

PS3 LINE

2c

ACT FD LIM

3

EX

CSV2 LATCH PS5 ACT FD LIM

PCS 35 REV CL

42a 41a

35 CL REV FD

PRESSURE SWITCH 3 NORMALLY CLOSED

12

51

51

ON

44

ACT FD LIM

1

CBR 1

21

CASE (7) (Upper Valve Body Side)

52 34

51

2

11

29b

28a 29a

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

2d

32a

43b

43a

46a

35a

2e

46b

32b

ACT FD LIM

ACT FD LIM

47b

ACT FD LIM

4

39

11

51

51c

29d 29c

PCS 26 CL

9

52

27

52

47a

1234 CL DFLT ACT FD LIM

PRESSURE SWITCH 4 NORMALLY CLOSED

10

24

52

31a

29e

29

INDICATES BOLT HOLES

51

52

14

17 24

51

17a 31c 31b

28b

9

52

34 51

27 51 26

39 52

52

#2

CBR

1234 CL DFLT

13b

EX

30

1

38

10 38

49

31

CSV2 LATCH

46

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34 2

9

2

11

49

49

52

39

CBR1/CBR FD

PCS 1234 CL PCS LINE PCS TCC

FILTER PLATE ASSEMBLY (311)

ACT FD LIM

24e

36

ACT FD LIM

49a

14

26

26 11

10

9a 9b

48b

PS3 PS1 LINE PCS 35 REV CL

LINE

24d

LINE

FLUID PAN (29)

EX

DRIVE

ACT FD LIM

2b 24a 24b 24c

1234 CL

EX

EX

EX

LINE

MANUAL VALVE

ACT FD LIM ACT FD LIM

SUCTION

35 REV CL COMP FD

9

FLUID PUMP COVER (219) (Case Side)

52

➤

SOL 1 SOL 1 REG APPLY PS4 REG APPLY

DRIVE

10c

PCS LINE

FLUID FILTER ASSEMBLY (26)

38

38

– DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

22

EX M

35 CL REV FD

EX

REVERSE

R N D

14

2 34

48a

16a

CLUTCH SELECT VALVE 2

P

11

LINE

9 2

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW.

17 38

13c

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

DRIVE 1-6

REG APP

EX

17c 17b 17d 10a

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

SOL 1

LINE

COMP FD

10

REVERSE

CBR EX

REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

PCS CBR1/456 CL

LINE

38a

9

40

SHTL TCC REGULATOR VALVE

38b

10b

10

– EXHAUST FLUID NOT SHOWN.

13a 13d 13e 30a

PS1

35 REV CL ACT FD LIM ACT FD LIM DRIVE 1-6

PCS TCC

38e

38c

40a

52 10 52 52 49

NOTE:

48

38d

11 14

14 11

9

49

52 52

1

45b

SOL 1 35 REV CL

38f

LUBE 456 CL

41

45a

2a 11c

9

ISOLATOR VALVE

37

CBR

14

5

38

456 CL

13

PCS LINE

12c

12

34l

19b

34k

19a

34g

34a

34e

34i

34j

34h

19c

20

CSV3 ENABLE

35 CL REV FD

11b

FLUID PUMP COVER (219)

52 10

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

REVERSE 456 CL

2

26

52

52

9

#4

12a

42

12b

35 REV FD

34b

18a

21a

34f

34d

34c

21c

21b

37e

DRIVE 1-6

37d

37c

53b

21d

54a

21e

44c

44b

44a

36a

DRV B

23

456 CL

COMPENSATOR FD REG VALVE

11d 11a

DECREASE EXH

26

LINE

PS5

50a

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50b

25

DRIVE 1-6

DRIVE 1-6

50c

34 26

EX

47

COMP FD LINE EX

50d

11e

2

2

2

52

34 52

2

–

ACT FEED LIMIT VALVE

456 CL #3

DRV B

50e

EX BF

PCS TCC

LINE

37b

43

37a 53a

25a

25b

25c

12h

12g

12i

44e

44f

32

44d

51b

15a

27a

26b

26a

51a

14b

14a

14c

27b

25d

33

#7

EX

15b

45

LOWER CONTROL VALVE BODY (307)

50h 50g 50f

PCS 1234 CL

LUBE REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

TCC CONTROL VALVE

LINE 3

50

EX

GASKET

39a

2

52 7

6 5 11 34 26 14

11 8

38

9

1

5

52 52 7 34

49

CBR1/456 CL FD DRIVE 1-6 PS1

456 CL

35R SPL #5

#1

39b

29 35

PCS CBR1/456 CL PCS 26 CL

CBR1 FDBK

CBR1/456 CL FD

35R CLUTCH BOOST VALVE

26 CL

EX BF

EX BF

1234 CL

EX BF

EX BF EX BF

SPACER PLATE (305) 39c

EX BF

6

6

7

2 10

49

FLUID PUMP COVER (219) (Torque Converter Housing Side)

456 CL 35 REV CL FDBK

#6

COMP FD

CONV FD LIMIT

7

EXH

1

5 51

7

7 1 52

52 38

PS3

PS1 456 CL 35 REV CL FDBK

GASKET

CONVERTER FEED LIMIT

51 51 6 5

7 51

52

10

EX BF

26 CL/1234 CL FD

FRONT LUBE

LINE DRIVE 1-6 PS5 EX

51

4

3

2

51

1

PCS 35 REV CL CBR1 FDBK

ACT FD LIM

CASE (7)

PRESSURE REGULATOR VALVE

EX BF

35 REV CL

LINE

ISOLATOR

EXH EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

456 CL

2

2a

3

5

7

PS3

EX BF

86

PS3 EX

EX BF EX BF

35 REV CL

2a

456 CL 2-6 CLUTCH REG

EX

PS1 EX

4 2

2 6

56 8

EX

5

5

5

PCS CBR1/456 CL EX

52 2

52

6

2

3

56

26 CL

35 REV CL ACT FD LIM

EX

2

55

2

52

52 5 4

51

8

26 CL/1234 CL FD EX BF

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL FDBK

LUBE

6

52

PCS CBR1/456 CL PCS 26 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

1234 CLUTCH BOOST VALVE

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

PCS 1234 CL

1234 CL DFLT PS4

1234 CL FD PS4 EX

1234 CL

TCC RELEASE

LUBE

COMP FD 35 REV CL 456 CL 1234 CL

TCC APPLY

LUBE

COOLER FEED

1234 CL 1234 CL FDBK EX

EX

2-6 GAIN

PCS 1234 CL

EX BF EX BF

CONV FD

55 55

55 55 6

5

➤

PCS 1234 CL PS4

52

55

52

52

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

(Engine Running)

FRONT

456 CL LUBE CASE (7) UPPER CONTROL VALVE BODY (304)

COOLER

LUBE

COMP FD

CBR1/C456 CLU REG VALVE

TCC APPLY

2-6 CLUTCH ASSEMBLY (450-457)

ns p sure mp ou tra pum Preses pu to the hen mand ulat rdingents. Wthe defrom accoirem ceeds, fluidr requut ex sure lato outp e presre regu of linpressu the

➤

COMP FD

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

49

➤

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1)

FLUID PRESSURE TEST PLUG (40)

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

3-5 REVERSE CLUTCH

COOLER FEED

(P) Park l the e oi r in th leve fromwing: ctor sure follo sele pres the gthe line ed to 8): Re ) Withsition, rect lve(21essure po p is di lator Va(line prion pum Regu tput miss

PARK

1-2-3-4 CLUTCH

➤

➤

(Engine Running)

PARK

32a 43b

50h 39

38

51c

48a

2e

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 87

➤

HALF PAGE TEXT AND LEGEND

COMPLETE ILLUSTRATED PARTS LIST

Figure 1

5

UNDERSTANDING THE GRAPHICS

TORQUE CONVERTER HOUSING (203)

FLUID PUMP COVER ASSEMBLY (219)

TORQUE CONVERTER ASSEMBLY (1)

TRANSMISSION CASE ASSEMBLY (7)

CONTROL VALVE ASSEMBLY (21)

FLUID FILTER ASSEMBLY (26) FLUID PAN ASSEMBLY (29)

Figure 2

The flow of transmission fluid starts in the bottom pan and is drawn through the filter, and into the oil pump assembly. This is a basic concept of fluid flow that can be understood by reviewing the illustrations provided in Figure 2. However, fluid may pass between the control valve body, spacer plate, case and other components many times before reaching a valve or applying a clutch. For this reason, the graphics are designed to show the exact location where fluid passes through a component and into other passages for specific gear range operation. To provide a better understanding of fluid flow in the Hydra-matic 6 Speed RWD transmission, the components involved with hydraulic control and fluid flow are illustrated in three major formats. Figure 3 provides an example of these formats which are: 1. A three dimensional line drawing of the component for easier part identification. 2. A two dimensional line drawing of the component to indicate fluid passages and orifices. 6

3. A graphic schematic representation that displays valves, ball check valves, orifices and so forth, required for the proper function of the transmission in a specific gear range. In the schematic drawings, fluid circuits are represented by straight lines and orifices are represented by indentations in a circuit. All circuits are labeled and color coded to provide reference points between the schematic drawing and the two dimensional line drawing of the components. Figure 4 (page 7B) provides an illustration of a typical valve, and valve train components. A brief description of valve operation is also provided to support the illustration. Figure 5 (page 7B) provides a color coded chart that references different fluid pressures used to operate the hydraulic control systems. A brief description of how fluid pressures affect valve operation is also provided.

UNDERSTANDING THE GRAPHICS LOWER VALVE BODY SIDE

(Engine Running) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

456 CL LUBE

LUBE PCS 35 REV CL 26 CL 26 CL

456 CLUTCH BOOST VALVE

ACT FD LIM

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

PS3 PS1 LINE PCS 35 REV CL

42a

ACT FD LIM

12e

51

N.L. OFF

N.L. OFF

PS5 ACT FD LIM

PCS 26 CL

ACT FD LIM

➤

SHIFT SOL 2

N.L.

ACT FD LIM

SOL 2

ACT FD LIM

PCS TCC

ACT FD LIM

PS3

PS1 ACT FD LIM

ACT FD LIM ACT FD LIM

SOL 1

PCS LINE

PS4

N.H.

TCC PRESSURE CONTROL SOLENOID

5

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

➤

➤

SPACER PLATE

➤ ➤

➤ ➤

EX WITH SIGNAL FLUID PRESSURE EQUAL TO OR LESS THAN SPRING AND SPRING ASSIST FLUID PRESSURE THE VALVE REMAINS IN CLOSED POSITION.

EX WITH SIGNAL FLUID PRESSURE GREATER THAN SPRING AND SPRING ASSIST FLUID PRESSURE THE VALVE MOVES OVER.

➤

CASE ASSEMBLY (7)

FLUID PUMP COVER ASSEMBLY (219)

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305)

SPRING ASSIST FLUID

➤

➤

SIGNAL FLUID

➤

TORQUE CONVERTER HOUSING (203)

➤

APPLY FLUID

APPLY FLUID SEATS THE BALL CHECK VALVE FORCING FLUID THROUGH AN ORIFICE IN THE SPACER PLATE, WHICH CREATES A SLOWER APPLY.

➤

➤

➤

SIGNAL FLUID

LOWER VALVE BODY SIDE

APPLY FLUID

SPRING ASSIST FLUID

➤ ➤

GRAPHIC SCHEMATIC REPRESENTATION

TWO DIMENSIONAL

➤

THREE DIMENSIONAL

SPACER PLATE

➤

➤

ON

C1234 PRESSURE CONTROL SOLENOID 5

PRESSURE SWITCH 5 NORMALLY CLOSED

TO APPLY COMPONENT ➤

N.L.

LINE PRESSURE CONTROL SOLENOID

3

30b

➤

SHIFT SOL 1

PRESSURE SWITCH 3 NORMALLY CLOSED

54b

➤ ➤

CONTROL SOLENOID VALVE ASSEMBLY (314)

1

EXHAUST FROM THE APPLY COMPONENT UNSEATS THE BALL CHECK VALVE, THEREFORE CREATING A QUICK RELEASE.

12d

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

EX

12f

ACT FD LIM

4

LINE

2c

ACT FD LIM

PRESSURE SWITCH 4 NORMALLY CLOSED

FILTER PLATE ASSEMBLY (311)

PS3

41a

CONTROL VALVE LOWER BODY ASSEMBLY (307)

➤

FLUID PAN (29)

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE 44 47a

1234 CL DFLT ACT FD LIM

LINE

FLUID FILTER ASSEMBLY (26)

46a

46b

47b

➤

LINE

26 CL

26 CL PS5

LINE 2d

43b

32a 32b

43a

35a

2e

EX

EX

PCS 26 CL

35 CL REV FD

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

29b

28a 29a

➤

24e

36

29c

➤

49a

CBR 1

29d

21

CBR1/CBR FD

PCS 1234 CL PCS LINE PCS TCC

24d

PCS LINE

51c 29e

28b

➤

1234 CL

LINE 1234 CL DFLT

EX

➤

SUCTION

2b

31a

➤

➤

10c

11 24a 24b 24c

CSV2 LATCH

DRIVE

#2

17a 31c 31b

CBR

LINE

MANUAL VALVE

EX

10b

35 REV CL

12c

EX

SOL 1 REG APPLY PS4 REG APPLY

17d 10a 40a

DRIVE

35 CL REV FD

M

SOL 1

17b

EX

REVERSE

EX

17c

R N D

31 13b

16a

CLUTCH SELECT VALVE 2

P

VALVE

22

DRIVE 1-6

REG APP

10

EX

SOL 1

38a

LINE

COMP FD

38b

39 48b

13c

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SHTL TCC REGULATOR VALVE

38c

BORE PLUG

48a

PS1

LINE

38f

LUBE 456 CL

34l

ACT FD LIM REVERSE 35 CL REV FD EX DRV B

CBR EX

CLUTCH SELECT VALVE 3

38d

COMP FD

12b

12a

19b

19a

34k

19c

34g

34i

34h

34e

34a

18a

34f

34b

34c

21a

34d

21b

DRIVE 1-6

34j

40 13a 13d 13e 30a 9a 9b

PCS CBR1/456 CL

DRIVE 1-6

PCS TCC

38e

SPRING

UPPER VALVE BODY SIDE

48

SOL 1 35 REV CL

11c

9

RETAINING PIN

TWO DIMENSIONAL

45b

CBR

14

ISOLATOR VALVE

41

45a

2a

5

37

CSV3 ENABLE

13

PCS LINE

38

CSV2 LATCH PS5 ACT FD LIM

11d 11a

THREE DIMENSIONAL

#4

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

LUBE

CBR1/C456 CLU REG VALVE

CBR1 FDBK

CBR1/456 CL FD

EX BF

26 CL/1234 CL FD EX BF

26 CL 35 REV FD

53b

37d

37c

37e

21d

37b

37a 53a

54a

21e

12

PCS 35 REV CL

50a

20

456 CL

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

11e

DECREASE EXH

42

456 CL

DRIVE 1-6

50b

26

23

RETAINING PIN

35 CL REV FD

COMP FD

50c

34

PCS TCC

LINE

#3

COMPENSATOR FD REG VALVE

COMP FD LINE EX

47

46

DRIVE 1-6

DRV B

50e 50d

36a

44a

44c

44b

44d

25a

12h

12g

12i

44e

25c

51b

15a

25b 44f

14a

25d

50f

EX BF

25

BORE PLUG

LINE

DRV B

50h 50g

EX BF

PCS 1234 CL

REG APPLY

#7

EX

15b

27a

14c

14b

26b

51a

26a

27b

EX

43

35 REV CL ACT FD LIM ACT FD LIM

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

2

LINE

TCC CONTROL VALVE

39a

3

32

LOWER CONTROL VALVE BODY (307)

29

LINE

33

39b

CONV FD

PRESSURE REGULATOR VALVE

GASKET

45

21c

1234 CL

EX BF

39c

CONVERTER FEED LIMIT

50

EX

CONV FD LIMIT

SPACER PLATE (305)

#5

#1

#6

GASKET

7

EXH

ACT FEED LIMIT VALVE

456 CL

REVERSE

CASE (7)

EX BF EX BF

35R SPL

35 REV CL

ISOLATOR

456 CL 456 CL

35 REV CL FDBK

SPRING VALVE

VALVE BODY

PS3

PS1 26 CL/1234 CL FD 456 CL 35 REV CL FDBK

BALL CHECK VALVE

RESTRICTING ORIFICE

SPACER PLATE

CBR1/456 CL FD DRIVE 1-6 PS1

35 REV CL

1

LINE DRIVE 1-6 PS5 EX

PCS 35 REV CL CBR1 FDBK EX BF

456 CL

FRONT LUBE

EX

EX

EX BF EX BF

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

PCS CBR1/456 CL EX BF

EX BF EX BF

EX BF LUBE

6

PS3 EX

EXH

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

2-6 CLUTCH REG

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX

PS1 EX

26 CL

1234 CL FDBK

EX

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

PCS 1234 CL

1234 CL DFLT PS4

LUBE

COMP FD 35 REV CL 456 CL 1234 CL

1234 CL

1234 CLUTCH BOOSTVALVE

TCC RELEASE

EX EX BF

PCS 26 CL 456 CL

➤

TCC APPLY

LUBE

COOLER FEED

1234 CL FD PS4 EX

EX

CONTROL VALVE UPPER BODY ASSEMBLY (304)

➤

1234 CL 1234 CL FDBK EX

EX BF

2-6 GAIN

PCS 1234 CL

PCS CBR1/456 CL

➤

PS4

➤

PCS 35 REV CL

PCS 1234 CL

➤

456 CL LUBE 1234 CL DFLT

COOLER FEED

LUBE

COMP FD

CASE (7) UPPER CONTROL VALVE BODY (304)

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

49

2-6 CLUTCH ASSEMBLY (450-457)

➤

TCC APPLY

TYPICAL VALVE

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

➤

PARK

UNDERSTANDING THE GRAPHICS

Figure 4

FLUID PRESSURES THREE DIMENSIONAL TWO DIMENSIONAL

INTAKE & INCREASE (SUCTION)

VALVE BODY SIDE

CONVERTER & LUBE MAINLINE

THREE DIMENSIONAL

FLUID PUMP COVER SIDE

CONVERTER HOUSING SIDE

UPPER VALVE BODY SIDE

PCS LINE SOLENOID SIGNAL

TWO DIMENSIONAL

TWO DIMENSIONAL

TWO DIMENSIONAL

Figure 3

COMPENSATOR ACTUATOR ➤ ➤ ➤ ➤

THREE DIMENSIONAL

FOLDOUT ➤ 7

TWO DIMENSIONAL

FOLDOUT ➤ 7A

➤

EXHAUST DIRECTION OF FLOW

➤

B

WITH EQUAL SURFACE AREAS ON EACH END OF THE VALVE, BUT FLUID PRESSURE "A" BEING GREATER THAN FLUID PRESSURE "B", THE VALVE WILL MOVE TO THE RIGHT.

Figure 5

A

B ➤

CONTROL SOLENOID (W/BODY AND TCM) VALVE ASSEMBLY (314)

➤A

➤

THREE DIMENSIONAL

➤

THREE DIMENSIONAL

WITH THE SAME FLUID PRESSURE ACTING ON BOTH SURFACE "A" AND SURFACE "B" THE VALVE WILL MOVE TO THE LEFT. THIS IS DUE TO THE LARGER SURFACE AREA OF "A" THAN "B".

7B

UNDERSTANDING THE GRAPHICS LOWER VALVE BODY SIDE

(Engine Running) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

456 CL LUBE

LUBE PCS 35 REV CL 26 CL 26 CL

456 CLUTCH BOOST VALVE

ACT FD LIM

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

PS3 PS1 LINE PCS 35 REV CL

42a

ACT FD LIM

12e

51

N.L. OFF

N.L. OFF

PS5 ACT FD LIM

PCS 26 CL

ACT FD LIM

➤

SHIFT SOL 2

N.L.

ACT FD LIM

SOL 2

ACT FD LIM

PCS TCC

ACT FD LIM

PS3

PS1 ACT FD LIM

ACT FD LIM ACT FD LIM

SOL 1

PCS LINE

PS4

N.H.

TCC PRESSURE CONTROL SOLENOID

5

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

➤

➤

SPACER PLATE

➤ ➤

➤ ➤

EX WITH SIGNAL FLUID PRESSURE EQUAL TO OR LESS THAN SPRING AND SPRING ASSIST FLUID PRESSURE THE VALVE REMAINS IN CLOSED POSITION.

EX WITH SIGNAL FLUID PRESSURE GREATER THAN SPRING AND SPRING ASSIST FLUID PRESSURE THE VALVE MOVES OVER.

➤

CASE ASSEMBLY (7)

FLUID PUMP COVER ASSEMBLY (219)

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305)

SPRING ASSIST FLUID

➤

➤

SIGNAL FLUID

➤

TORQUE CONVERTER HOUSING (203)

➤

APPLY FLUID

APPLY FLUID SEATS THE BALL CHECK VALVE FORCING FLUID THROUGH AN ORIFICE IN THE SPACER PLATE, WHICH CREATES A SLOWER APPLY.

➤

➤

➤

SIGNAL FLUID

LOWER VALVE BODY SIDE

APPLY FLUID

SPRING ASSIST FLUID

➤ ➤

GRAPHIC SCHEMATIC REPRESENTATION

TWO DIMENSIONAL

➤

THREE DIMENSIONAL

SPACER PLATE

➤

➤

ON

C1234 PRESSURE CONTROL SOLENOID 5

PRESSURE SWITCH 5 NORMALLY CLOSED

TO APPLY COMPONENT ➤

N.L.

LINE PRESSURE CONTROL SOLENOID

3

30b

➤

SHIFT SOL 1

PRESSURE SWITCH 3 NORMALLY CLOSED

54b

➤ ➤

CONTROL SOLENOID VALVE ASSEMBLY (314)

1

EXHAUST FROM THE APPLY COMPONENT UNSEATS THE BALL CHECK VALVE, THEREFORE CREATING A QUICK RELEASE.

12d

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

EX

12f

ACT FD LIM

4

LINE

2c

ACT FD LIM

PRESSURE SWITCH 4 NORMALLY CLOSED

FILTER PLATE ASSEMBLY (311)

PS3

41a

CONTROL VALVE LOWER BODY ASSEMBLY (307)

➤

FLUID PAN (29)

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE 44 47a

1234 CL DFLT ACT FD LIM

LINE

FLUID FILTER ASSEMBLY (26)

46a

46b

47b

➤

LINE

26 CL

26 CL PS5

LINE 2d

43b

32a 32b

43a

35a

2e

EX

EX

PCS 26 CL

35 CL REV FD

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

29b

28a 29a

➤

24e

36

29c

➤

49a

CBR 1

29d

21

CBR1/CBR FD

PCS 1234 CL PCS LINE PCS TCC

24d

PCS LINE

51c 29e

28b

➤

1234 CL

LINE 1234 CL DFLT

EX

➤

SUCTION

2b

31a

➤

➤

10c

11 24a 24b 24c

CSV2 LATCH

DRIVE

#2

17a 31c 31b

CBR

LINE

MANUAL VALVE

EX

10b

35 REV CL

12c

EX

SOL 1 REG APPLY PS4 REG APPLY

17d 10a 40a

DRIVE

35 CL REV FD

M

SOL 1

17b

EX

REVERSE

EX

17c

R N D

31 13b

16a

CLUTCH SELECT VALVE 2

P

VALVE

22

DRIVE 1-6

REG APP

10

EX

SOL 1

38a

LINE

COMP FD

38b

39 48b

13c

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SHTL TCC REGULATOR VALVE

38c

BORE PLUG

48a

PS1

LINE

38f

LUBE 456 CL

34l

ACT FD LIM REVERSE 35 CL REV FD EX DRV B

CBR EX

CLUTCH SELECT VALVE 3

38d

COMP FD

12b

12a

19b

19a

34k

19c

34g

34i

34h

34e

34a

18a

34f

34b

34c

21a

34d

21b

DRIVE 1-6

34j

40 13a 13d 13e 30a 9a 9b

PCS CBR1/456 CL

DRIVE 1-6

PCS TCC

38e

SPRING

UPPER VALVE BODY SIDE

48

SOL 1 35 REV CL

11c

9

RETAINING PIN

TWO DIMENSIONAL

45b

CBR

14

ISOLATOR VALVE

41

45a

2a

5

37

CSV3 ENABLE

13

PCS LINE

38

CSV2 LATCH PS5 ACT FD LIM

11d 11a

THREE DIMENSIONAL

#4

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

LUBE

CBR1/C456 CLU REG VALVE

CBR1 FDBK

CBR1/456 CL FD

EX BF

26 CL/1234 CL FD EX BF

26 CL 35 REV FD

53b

37d

37c

37e

21d

37b

37a 53a

54a

21e

12

PCS 35 REV CL

50a

20

456 CL

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

11e

DECREASE EXH

42

456 CL

DRIVE 1-6

50b

26

23

RETAINING PIN

35 CL REV FD

COMP FD

50c

34

PCS TCC

LINE

#3

COMPENSATOR FD REG VALVE

COMP FD LINE EX

47

46

DRIVE 1-6

DRV B

50e 50d

36a

44a

44c

44b

44d

25a

12h

12g

12i

44e

25c

51b

15a

25b 44f

14a

25d

50f

EX BF

25

BORE PLUG

LINE

DRV B

50h 50g

EX BF

PCS 1234 CL

REG APPLY

#7

EX

15b

27a

14c

14b

26b

51a

26a

27b

EX

43

35 REV CL ACT FD LIM ACT FD LIM

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

2

LINE

TCC CONTROL VALVE

39a

3

32

LOWER CONTROL VALVE BODY (307)

29

LINE

33

39b

CONV FD

PRESSURE REGULATOR VALVE

GASKET

45

21c

1234 CL

EX BF

39c

CONVERTER FEED LIMIT

50

EX

CONV FD LIMIT

SPACER PLATE (305)

#5

#1

#6

GASKET

7

EXH

ACT FEED LIMIT VALVE

456 CL

REVERSE

CASE (7)

EX BF EX BF

35R SPL

35 REV CL

ISOLATOR

456 CL 456 CL

35 REV CL FDBK

SPRING VALVE

VALVE BODY

PS3

PS1 26 CL/1234 CL FD 456 CL 35 REV CL FDBK

BALL CHECK VALVE

RESTRICTING ORIFICE

SPACER PLATE

CBR1/456 CL FD DRIVE 1-6 PS1

35 REV CL

1

LINE DRIVE 1-6 PS5 EX

PCS 35 REV CL CBR1 FDBK EX BF

456 CL

FRONT LUBE

EX

EX

EX BF EX BF

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

PCS CBR1/456 CL EX BF

EX BF EX BF

EX BF LUBE

6

PS3 EX

EXH

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

2-6 CLUTCH REG

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX

PS1 EX

26 CL

1234 CL FDBK

EX

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

PCS 1234 CL

1234 CL DFLT PS4

LUBE

COMP FD 35 REV CL 456 CL 1234 CL

1234 CL

1234 CLUTCH BOOSTVALVE

TCC RELEASE

EX EX BF

PCS 26 CL 456 CL

➤

TCC APPLY

LUBE

COOLER FEED

1234 CL FD PS4 EX

EX

CONTROL VALVE UPPER BODY ASSEMBLY (304)

➤

1234 CL 1234 CL FDBK EX

EX BF

2-6 GAIN

PCS 1234 CL

PCS CBR1/456 CL

➤

PS4

➤

PCS 35 REV CL

PCS 1234 CL

➤

456 CL LUBE 1234 CL DFLT

COOLER FEED

LUBE

COMP FD

CASE (7) UPPER CONTROL VALVE BODY (304)

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

49

2-6 CLUTCH ASSEMBLY (450-457)

➤

TCC APPLY

TYPICAL VALVE

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

➤

PARK

UNDERSTANDING THE GRAPHICS

Figure 4

FLUID PRESSURES THREE DIMENSIONAL TWO DIMENSIONAL

INTAKE & INCREASE (SUCTION)

VALVE BODY SIDE

CONVERTER & LUBE MAINLINE

THREE DIMENSIONAL

FLUID PUMP COVER SIDE

CONVERTER HOUSING SIDE

UPPER VALVE BODY SIDE

PCS LINE SOLENOID SIGNAL

TWO DIMENSIONAL

TWO DIMENSIONAL

TWO DIMENSIONAL

Figure 3

COMPENSATOR ACTUATOR ➤ ➤ ➤ ➤

THREE DIMENSIONAL

FOLDOUT ➤ 7

TWO DIMENSIONAL

FOLDOUT ➤ 7A

➤

EXHAUST DIRECTION OF FLOW

➤

B

WITH EQUAL SURFACE AREAS ON EACH END OF THE VALVE, BUT FLUID PRESSURE "A" BEING GREATER THAN FLUID PRESSURE "B", THE VALVE WILL MOVE TO THE RIGHT.

Figure 5

A

B ➤

CONTROL SOLENOID (W/BODY AND TCM) VALVE ASSEMBLY (314)

➤A

➤

THREE DIMENSIONAL

➤

THREE DIMENSIONAL

WITH THE SAME FLUID PRESSURE ACTING ON BOTH SURFACE "A" AND SURFACE "B" THE VALVE WILL MOVE TO THE LEFT. THIS IS DUE TO THE LARGER SURFACE AREA OF "A" THAN "B".

7B

6 Speed RWD

CONVERTER TURBINE ASSEMBLY

TORQUE CONVERTER FLUID PUMP HOUSING ASSEMBLY (2)

INPUT SUN GEAR (53)

1-2-3-4 CLUTCH

2-6 INPUT 3-5 REVERSE CLUTCH CARRIER CLUTCH ASSEMBLY (52)

TORQUE CONVERTER ASSEMBLY (1)

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

CENTER SUPPORT ASSEMBLY (67)

LO AND REVERSE CLUTCH

LO CLUTCH SPRAG ASSEMBLY (467)

OUTPUT CARRIER ASSEMBLY (68)

OUTPUT CARRIER REAR SUN GEAR (489)

OUTPUT SHAFT ASSEMBLY (70)

4-5-6 CLUTCH (w/OUTPUT CARRIER SHAFT AND DAMPENER) HUB ASSEMBLY (58) PARK PAWL (502) OUTPUT CARRIER INTERNAL REAR GEAR (497)

Figure 7

OUTPUT CARRIER INTERNAL FRONT GEAR (495)

HYDRA-MATIC 6 Speed RWD CROSS SECTIONAL DRAWING A cross sectional line drawing is typically the standard method for illustrating either an individual mechanical component or a complete transmission assembly. However, unless a person is familiar with all the individual components of the transmission, distinguishing components may be difficult in this type of drawing. For this reason, a three dimensional perspective illustration (shown on page 8) is the primary drawing used throughout this book.

OUTPUT CARRIER FRONT SUN GEAR (487)

STATOR ROLLER CLUTCH

8

PRESSURE PLATE ASSEMBLY

CONVERTER STATOR ASSEMBLY

CONVERTER PUMP ASSEMBLY

1-2-3-4 AND 3-5 MANUAL SHAFT REVERSE CLUTCH DETENT LEVER ASSEMBLY ASSEMBLY (51) (505)

MANUAL SHIFT SHAFT (508)

Figure 6

INPUT AND CONTROL VALVE OUTPUT SPEED ASSEMBLY SENSOR ASSEMBLY (21) (303)

PARK PAWL 2-6 AND ACTUATOR 3-5 REVERSE ASSEMBLY CLUTCH HUB (503) ASSEMBLY (64)

1-2-3-4 CLUTCH HUB ASSEMBLY (61)

The purpose for this type of illustration is to provide a more detailed graphic representation of each component and to show their relationship to other components within the transmission assembly. It is also useful for 8A

understanding the cross sectional line drawing by comparing the same components from the three dimensional perspective illustration. In this regard it becomes an excellent teaching instrument. Additionally, all the illustrations contained in this book use a color scheme that is consistent throughout this book. In other words, regardless of the type of illustration or drawing, all components have an assigned color and that color is used whenever that component is illustrated. This consistency not only helps to provide for easy component identification but it also enhances the graphic and color continuity between sections.

Figure 7

HYDRA-MATIC 6 Speed RWD CROSS SECTIONAL DRAWING A cross sectional line drawing is typically the standard method for illustrating either an individual mechanical component or a complete transmission assembly. However, unless a person is familiar with all the individual components of the transmission, distinguishing components may be difficult in this type of drawing. For this reason, a three dimensional perspective illustration (shown on page 8) is the primary drawing used throughout this book. The purpose for this type of illustration is to provide a more detailed graphic representation of each component and to show their relationship to other components within the transmission assembly. It is also useful for 8A

understanding the cross sectional line drawing by comparing the same components from the three dimensional perspective illustration. In this regard it becomes an excellent teaching instrument. Additionally, all the illustrations contained in this book use a color scheme that is consistent throughout this book. In other words, regardless of the type of illustration or drawing, all components have an assigned color and that color is used whenever that component is illustrated. This consistency not only helps to provide for easy component identification but it also enhances the graphic and color continuity between sections.

GENERAL DESCRIPTION The Hydra-matic 6 Speed RWD is a fully automatic, six speed, rear-wheel drive, electronically-controlled transmission that features clutch to clutch shifting. It consists primarily of a four-element torque converter, two planetary gear sets, friction and mechanical clutches and a hydraulic pressurization and control system. The four-element torque converter contains a pump, a turbine, a pressure plate splined to the turbine, and a stator assembly. The torque converter acts as a fluid coupling to smoothly transmit power from the engine to the transmission. It also hydraulically provides additional torque multiplication when required. The pressure plate, when applied, provides a mechanical “direct drive” coupling of the engine to the transmission. The planetary gear sets provide the six forward gear ratios and reverse. Changing gear ratios is fully automatic and is accomplished through the use of a Transmission Control Module (TCM) located within the transmission. The TCM receives and monitors various electronic sensor inputs and uses this information to shift the transmission at the optimum time.

The TCM commands shift solenoids and variable bleed pressure control solenoids within the transmission to control shift timing. The TCM controls shift feel through the pressure control solenoid. The TCM also controls the apply and release of the torque converter clutch which allows the engine to deliver the maximum fuel efficiency without sacrificing vehicle performance. The hydraulic system primarily consists of a vane type pump, two control valve bodies, converter housing and case. The pump maintains the working pressures needed to stroke the clutch pistons that apply or release the friction components. These friction components (when applied or released) support the automatic shifting qualities of the transmission. The friction components used in this transmission consist of five multiple disc clutches. The multiple disc clutches combine with one mechanical sprag clutch, to deliver seven different gear ratios through the gearsets. The gearsets then transfer torque through the output shaft.

EXPLANATION OF GEAR RANGES position should be selected to restart the engine while the vehicle is moving. P

R +

N

M/S

D

Figure 8

The transmission shift quadrants vary by model. There may be four to seven different positions shown on the shift quadrant (Figure 8 & 9). The following are a couple examples. P – Park position enables the engine to be started while preventing the vehicle from rolling either forward or backward. For safety reasons, the vehicle’s parking brake should be used in addition to the transmission “Park” position. Since the output shaft is mechanically locked to the case through the parking pawl and rear internal gear, Park position should not be selected until the vehicle has come to a complete stop. R – Reverse enables the vehicle to be operated in a rearward direction. N – Neutral position enables the engine to start and operate without driving the vehicle. If necessary, this

D – Drive range should be used for all normal driving conditions for maximum efficiency and fuel economy. Drive range allows the transmission to operate in each of the six forward gear ratios. Downshifts to a lower gear, or higher gear ratio are available for safe passing by depressing the accelerator or by manually selecting a lower gear with the shift selector.

DRIVER SHIFT CONTROL GEAR RANGES Some vehicles are equipped with a Driver Shift Control (DSC) version of the selector system (Figure 8). This configuration allows the driver to manually shift between forward gears. D – In the Drive position, the transmission will automatically upshift from first to 6th, and downshift from sixth to first, according to the normal shift pattern programmed in the TCM. M/S – In the M/S (Manual or Sport) position, the transmission will either automatically upshift from 1st to 6th, and downshift from 6th to 1st, according to the Sport shift pattern programmed in the TCM or, the driver may activate the manual function by moving the selector lever towards “+” or “-” to cause an upshift or downshift. The transmission will shift up or down depending on the request that is made by moving the selector.

P

R

N

D

M

2

1

Possible Variations Figure 9

MANUAL SHIFT GEAR RANGES Some vehicles are equipped with a shift quadrant that allow manual range selection. For example, manual range and or manual range 2 or 1 (figure 9) can be used for conditions where it may be desirable to control the selection of gear ratios. These conditions include towing a trailer and driving on hilly terrain. These ranges are also helpful for engine braking when descending slight grades. Upshifts and downshifts are the same as in Drive range 1st, 2nd, and 3rd gears, except that the transmission will not shift above 3rd gear unless the transmission is in a undesirable RPM range, in which case it will shift into 4th gear. 1st, 2nd or 3rd manual range can be selected at any vehicle speed but will downshift into the selected gear only if vehicle speed is low enough not to over-rev the engine (calibrated in TCM). 3 - Manual 3rd adds more performance for con-

2 - Manual 2nd adds more performance for congested traffic and hilly terrain. It has the same starting ratio (1st gear) as Drive range but prevents the transmission from shifting above 2nd gear. Thus, Manual 2nd can be used to retain 2nd gear for acceleration and engine braking as desired. Manual 2nd can be selected at any vehicle speed but will downshift into 2nd gear only if vehicle speed is low enough not to over-rev the engine (calibrated in TCM). 1 - Manual 1st has the same starting ratio (first gear) as Drive range but prevents the transmission from shifting above 1st gear. Thus, Manual 1st can be used to retain 1st gear for heavy towing (creeper gear) and engine braking as desired. Manual 1st can be selected at any vehicle speed but will downshift into 1st gear only if vehicle speed is low enough not to over-rev the engine (calibrated in TCM).

PRINCIPLES OF OPERATION An automatic transmission is the mechanical component of a vehicle that transfers power (torque) from the engine to the wheels. It accomplishes this task by providing a number of forward gear ratios that automatically change as the speed of the vehicle increases. The reason for changing forward gear ratios is to provide the performance and economy expected from vehicles manufactured today. On the performance end, a gear ratio that develops a lot of torque (through torque multiplication) is required in order to initially start a vehicle moving. Once the vehicle is in motion, less torque is required in order to maintain the vehicle at a certain speed. When the vehicle has reached a desired speed, economy becomes the important factor and the transmission will shift into overdrive. At this point output speed is greater than input speed, and, input torque is greater than output torque. Another important function of the automatic transmission is to allow the engine to be started

FOLDOUT ➤ 9

gested traffic and hilly terrain. It has the same starting ratio (1st gear) as Drive range but prevents the transmission from shifting above 3rd gear. Thus, Manual 3rd can be used to retain 3rd gear for acceleration and engine braking as desired. Manual 3rd can be selected at any vehicle speed but will downshift into third gear only if vehicle speed is low enough not to over-rev the engine (calibrated in TCM).

and run without transferring torque to the wheels. This situation occurs whenever Park (P) or Neutral (N) range has been selected. Also, operating the vehicle in a rearward direction is possible whenever Reverse (R) range has been selected (accomplished by the gear sets). The variety of gear ranges in an automatic transmission are made possible through the interaction of numerous mechanically, hydraulically and electronically controlled components inside the transmission. At the appropriate time and sequence, these components are either applied or released and operate the gear set at a gear ratio consistent with the driver’s needs. The following pages describe the theoretical operation of the mechanical, hydraulic and electrical components found in the Hydramatic 6 Speed RWD transmission. When an understanding of these operating principles has been attained, diagnosis of these transmission systems is made easier. 9A

MAJOR MECHANICAL COMPONENTS TORQUE CONVERTER ASSEMBLY (1)

TORQUE CONVERTER (WITH FLUID PUMP) HOUSING ASSEMBLY (2)

SLOT SPLINED TO PUMP ROTOR

1-2-3-4 CLUTCH HUB ASSEMBLY (61) SPLINED TO THE INPUT SUN GEAR

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

SPLINED TOGETHER

SPLINED TO THE OUTPUT CARRIER REAR SUN GEAR

SPLINED TOGETHER

INPUT CARRIER ASSEMBLY (52)

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

4-5-6 CLUTCH (w/OUTPUT CARRIER SHAFT AND DAMPENER) HUB ASSEMBLY (58)

SPLINED TO THE OUTPUT CARRIER ASSEMBLY

SPLINED TOGETHER

SPLINED TO THE FLUID PUMP ASSEMBLY

2-6 CLUTCH

INPUT SUN GEAR (53)

LOW AND REVERSE CLUTCH

LO CLUTCH SPRAG ASSEMBLY (467)

2-6 AND 3-5 REVERSE CLUTCH HUB ASSEMBLY (64)

SPLINED TO THE 2-6 AND 3-5 REVERSE CLUTCH HUB ASSEMBLY

OUTPUT CARRIER REAR SUN GEAR (489)

SPLINED TO THE 1-2-3-4 CLUTCH HUB ASSEMBLY

OUTPUT CARRIER FRONT SUN GEAR (487) SPLINED TO THE OUTPUT CARRIER FRONT SUN GEAR

10

Figure 10

CENTER SUPPORT ASSEMBLY (67)

SPLINED TO THE 4-5-6 CLUTCH HUB ASSEMBLY

OUTPUT CARRIER ASSEMBLY (68)

OUTPUT SHAFT ASSEMBLY (70)

COLOR LEGEND

COLOR LEGEND

MAJOR MECHANICAL COMPONENTS The foldout graphic on page 10 contains a disassembled drawing of the major components used in the Hydra-matic 6 Speed RWD transmission. This drawing, along with the cross sectional illustrations on page 8 and 8A, show the major mechanical components and their relationship to each other as a complete assembly. Therefore, color has been used throughout this book to help identify parts that are splined together, rotating at engine speed, held stationary, and so forth. Color differentiation is particularly helpful when using the Power Flow section for understanding the transmission operation.

APPLY COMPONENTS The Range Reference Chart on page 11, provides another valuable source of information for explaining the overall function of the Hydra-matic 6 Speed RWD transmission. This chart highlights the major apply components that function in a selected gear range, and the specific gear operation within that gear range. Included as part of this chart is the same color reference to each major component that was previously discussed. If a component is active in a specific gear range, a word describing its activity will be listed in the column below that component. The row where the activity occurs corresponds to the appropriate transmission range and gear operation. An abbreviated version of this chart can also be found at the top of the half page of text located in the Power Flow section. This provides for a quick reference when reviewing the mechanical power flow information contained in that section.

The color legend below provides the “general” guidelines that were followed in assigning specific colors to the major components. However, due to the complexity of this transmission, some colors (such as grey) were used for artistic purposes rather than based on the specific function or location of that component. Components held stationary in the case or splined to the case. Examples: the Torque Converter Housing with Fluid Pump Assembly (2), and the Center Support Assembly (67). Components that rotate at engine speed. Examples: the Torque Converter Assembly (1), the Fluid Pump Rotor, and the Fluid Pump Vanes. Components that rotate at turbine speed. Examples: the Converter Turbine, the 4-5-6 (w/ Turbine Shaft) Clutch Assembly (56). Components such as the Stator in the Torque Converter Clutch Assembly (1). Components such as the Output Carrier Assembly (68). Components such as the 1-2-3-4 and 3-5 Reverse Clutch Assembly (51). Components such as the 1-2-3-4 Clutch Hub Assembly (61). Components such as the 2-6 and 3-5 Reverse Clutch Hub Assembly (64). Components such as the Low Clutch Sprag Outer Race. Components that rotate at transmission output speed such as the Output Shaft Assembly (70). All bearings and bushings. All seals

10A

10B

RANGE REFERENCE CHART HYDRA-MATIC 6L80 GEAR RATIOS 1ST 2ND 3RD

RANGE

GEAR

SHIFT SOL 1

SHIFT SOL 2

1-2-3-4 CL PC SOL 5 N.L.

2-6 CL PC SOL 4 N.L.

3-5 REV CL PC SOL 2 N.H.

LOW REV 4-5-6 CL PC SOL 3 N.H.

PARK

P

ON

ON

OFF

OFF

OFF

ON

REV

R

ON

OFF

OFF

OFF

ON

ON

NEU

N

ON

ON

OFF

OFF

OFF

ON

1st Braking

ON

ON

ON

OFF

OFF

ON

APPLIED

1st

OFF

ON

ON

OFF

OFF

OFF

APPLIED

2nd

OFF

ON

ON

ON

OFF

OFF

APPLIED

3rd

OFF

ON

ON

OFF

ON

OFF

APPLIED

4th

OFF

ON

ON

OFF

OFF

ON

APPLIED

5th

OFF

ON

OFF

OFF

ON

ON

6th

OFF

ON

OFF

ON

OFF

ON

1-2-3-4 CLUTCH

3-5 REV. CLUTCH

4.027 2.364 1.532

4-5-6 CLUTCH

4TH 5TH 6TH REVERSE

2-6 CLUTCH

LOW & REV. CLUTCH

1.152 0.852 0.667 3.064

LOW CLUTCH SPRAG

APPLIED* APPLIED

APPLIED APPLIED* APPLIED

HOLDING HOLDING

APPLIED APPLIED

D APPLIED APPLIED

APPLIED APPLIED

APPLIED

NOTE: FOR SHIFT SOLENOIDS 1 AND 2, "ON" = SOLENOID ENERGIZED (PRESSURIZED), "OFF" = SOLENOID DE-ENERGIZED (NO PRESSURE). NOTE: FOR PRESSURE CONTROL (PC) SOLENOIDS, "ON" = PRESSURIZED, "OFF" = NO PRESSURE.

* = APPLIED WITH NO LOAD.

Figure 11

11

TORQUE CONVERTER THRUST BEARING ASSEMBLY (D)

THRUST BEARING ASSEMBLY (D )

DAMPER ASSEMBLY (C) CONVERTER HOUSING COVER ASSEMBLY (A)

PRESSURE PLATE ASSEMBLY (B)

TURBINE ASSEMBLY (E)

CONVERTER PUMP ASSEMBLY (G)

E

TORQUE CONVERTER:

The torque converter (1) is the primary component for transmittal of power between the engine and the transmission. It is bolted to the engine flywheel (also known as the flexplate) so that it will rotate at engine speed. Some of the major functions of the torque converter are: • to provide for a smooth conversion of torque from the engine to the mechanical components of the transmission. • to multiply torque from the engine that enables the vehicle to achieve additional performance when required. • to mechanically operate the transmission fluid pump through the converter hub. • to provide a mechanical link, or direct drive, from the engine to the transmission through the use of a torque converter clutch (TCC).

STATOR ASSEMBLY (F)

G A

F B CONVERTER HUB

C

The torque converter assembly is made up of the following five main sub-assemblies: • a converter housing cover assembly (A) which is welded to the converter pump assembly (G). • a converter pump assembly (G) which is the driving member. • a turbine assembly (E) which is the driven or output member. • a stator assembly (F) which is the reaction member located between the converter pump and turbine assemblies. • a pressure plate assembly (B) splined to the turbine assembly to enable direct mechanical drive when appropriate.

STATOR SHAFT (3)

4-5-6 CLUTCH ASSEMBLY D (56) (TURBINE SHAFT)

CONVERTER PUMP ASSEMBLY AND TURBINE ASSEMBLY

When the engine is running the converter pump assembly acts as a centrifugal pump by picking up fluid at its center and discharging it at its rim between the blades (see Figure 13). The force of this fluid then hits the turbine blades and causes the turbine to rotate. As the engine and converter pump increase in RPM, so does the turbine. PRESSURE PLATE, DAMPER AND CONVERTER HOUSING ASSEMBLIES

The pressure plate is splined to the turbine hub and applies (engages) with the converter cover to provide a mechanical coupling of the engine to the transmission. When the pressure plate assembly is applied, the amount of slippage that occurs through a fluid coupling is reduced (but not necessarily eliminated), thereby providing a more efficient transfer of engine torque to the drive wheels.

12

Torque converter failure could cause loss of drive

and or loss of power. To reduce torsional shock during the apply of the pressure plate to the converter cover, a spring loaded damper assembly (C) is used. The pressure plate is attached to the pivoting mechanism of the damper assembly which allows the pressure plate to rotate independently of the damper assembly up to approximately 45 degrees. During engagement, the springs in the damper assembly cushion the pressure plate engagement and also reduce irregular torque pulses from the engine or road surface. Figure 12

TORQUE CONVERTER FLUID FLOW

STATOR ASSEMBLY (F) TURBINE ASSEMBLY (E)

CONVERTER PUMP ASSEMBLY (G)

Figure 13 Stator roller clutch failure •

Roller clutch freewheeling in both directions can cause poor acceleration at low speed.

•

Roller clutch locking up in both directions can cause poor acceleration at high speed.

•

Overheated fluid.

STATOR ASSEMBLY STATOR

STATOR HELD FLUID FLOW REDIRECTED

CONVERTER MULTIPLYING

FLUID FLOW FROM TURBINE

CONVERTER AT COUPLING SPEED STATOR ROTATES FREELY

The stator assembly is located between the pump assembly and turbine assembly, and is mounted on a one-way roller clutch. This oneway roller clutch allows the stator to rotate in one direction and prevents (holds) the stator from rotating in the other direction. The function of the stator is to redirect fluid returning from the turbine in order to assist the engine in turning the converter pump assembly. At low vehicle speeds, when greater torque is needed, fluid from the turbine hits the front side of the stator blades (the converter is multiplying torque). At this time, the one-way roller clutch prevents the stator from rotating in the same direction as the fluid flow, thereby redirecting fluid to assist the engine in turning the converter pump. In this mode, fluid leaving the converter pump has more force to turn the turbine assembly and multiply engine torque. As vehicle speed increases and less torque is required, centrifugal force acting on the fluid changes the direction of the fluid leaving the turbine such that it hits the back side of the stator blades (converter at coupling speed). When this occurs, the roller clutch overruns and allows the stator to rotate freely. Fluid is no longer being redirected to the converter pump and engine torque is not being multiplied.

Figure 14

13

TORQUE CONVERTER TCC RELEASE

TCC APPLY

When the torque converter clutch is released, fluid is fed into the torque converter by the pump into the release fluid passage. The release fluid passage is located between the stator shaft and the turbine shaft (56). Fluid travels between the shafts and enters the release side of the pressure plate at the end of the turbine shaft. The pressure plate is forced away from the converter cover and allows the torque converter turbine to rotate at speeds other than engine speed.

When the TCM determines that the vehicle is at the proper speed for the torque converter clutch to apply, it sends a signal to the TCC pressure control (PC) solenoid valve. The TCC PC solenoid valve then regulates line fluid from the pump into the regulated apply passage. The regulated apply fluid then feeds the apply fluid passage and applies the torque converter. The apply passage is located between the converter hub and the stator shaft. The fluid flows between the shafts, then passes into the torque converter on the apply side of the pressure plate assembly. Release fluid is then routed out of the torque converter between the turbine shaft and the stator shaft.

The release fluid then flows between the friction element on the pressure plate and the converter cover to enter the apply side of the torque converter. The fluid then exits the torque converter through the apply passage, which is located between the torque converter clutch hub and the stator shaft, and enters the pump.

Apply fluid pressure forces the pressure plate against the torque converter cover to provide a mechanical link between the engine and the turbine.

No TCC apply can be caused by: • • • • •

The TCC may apply in 1st (without engine braking) 2nd, 3rd, 4th, 5th and 6th gear (depending on the shift conditions), but should not apply until the transmission fluid and engine coolant temperatures have reached a minimum value (calibrated in TCM).

Electrical connectors, wiring harness or solenoid damaged Torque converter internal damage TCC control valve and spring worn, damaged or sticking Turbine shaft O-ring seal cut or damaged TCC regulator apply valve worn, damaged or sticking

➤ ➤

4-5-6 CLUTCH ASSEMBLY (56) (TURBINE SHAFT)

RELEASE FLUID ➤ ➤

4-5-6 CLUTCH ASSEMBLY (56) (TURBINE SHAFT)

APPLY FLUID

APPLY FLUID

RELEASE FLUID

➤ ➤

➤ ➤

RELEASE FLUID

PRESSURE PLATE

TORQUE CONVERTER ASSEMBLY (1)

➤ ➤

APPLY FLUID

PRESSURE PLATE

TCC RELEASE

14

TORQUE CONVERTER ASSEMBLY (1)

➤ ➤

TCC APPLY Figure 15

TORQUE CONVERTER TCC HYDRAULIC CIRCUIT - RELEASE

TCC HYDRAULIC CIRCUIT - APPLY

The TCC PC solenoid is OFF, which allows actuator feed limit fluid to exhaust through the solenoid. Without fluid pressure in the PC TCC circuit, the TCC regulator valve and the TCC control valve will remain in the released position.

The TCC PC solenoid is commanded ON, and the PCS TCC circuit becomes pressurized. PCS TCC fluid pressure moves the TCC regulator valve and the TCC control vale to the apply position. Drive 1 fluid passes through the TCC regulator valve and becomes regulated apply fluid. The regulated apply fluid passage travels to the TCC control valve, and is routed through the valve into the TCC apply circuit. At the same time, TCC release fluid is routed to an exhaust passage at the TCC control valve. The torque converter clutch will now apply and be held until conditions change to determine TCC release.

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

TCC APPLY COOLER FEED TCC CONTROL VALVE

DRIVE 1-6

TCC REGULATOR VALVE

TCC PRESSURE CONTROL SOLENOID

REG APP

N.L.

TCC RELEASE Figure 16

ON

EX

SHTL

EX

EX

EX

SOL 1

SHTL TCC REGULATOR VALVE

REG APPLY

PCS TCC

SOL 1

DRIVE 1-6

CONVERTER FEED LIMIT

PCS TCC

REG APPLY

EX

ACT FD LIM

PCS TCC

CONV FEED FROM PRESSURE REGULATOR

TCC CONTROL VALVE

CONVERTER FEED LIMIT

CONV FD LIMIT

COOLER FEED

EX

PCS TCC

ACT FD LIM

CONV FEED FROM PRESSURE REGULATOR

CONV FD LIMIT

TCC APPLY

TCC RELEASE

TCC APPLY

TCC RELEASE

TCC APPLY

REG APP

TCC APPLY

15

NOTES

16

APPLY COMPONENTS The Apply Components section is designed to explain the function of the hydraulic and mechanical holding devices used in the Hydra-matic 6 Speed RWD transmission. Some of these apply components, such as clutches, are hydraulically “applied” and “released” in order to provide automatic gear range shifting. Other components, such as a sprag clutch, often react to a hydraulically “applied” component by mechanically “holding” or “releasing” another member of the transmission. This interaction between the hydraulically and mechanically applied components is then explained in detail and supported with a graphic illustration. In addition, this section shows the routing of fluid pressure to the individual components and their internal functions when it applies or releases.

The sequence in which the components in this section have been discussed coincides with their physical arrangement inside the transmission. This order closely parallels the disassembly sequence used in the Hydra-matic 6 Speed RWD Unit Repair Section of the appropriate Service Manual. It also correlates with the components shown on the Range Reference Charts that are used throughout the Power Flow section of this book. The correlation of information between the sections of this book helps the user more clearly understand the hydraulic and mechanical operating principles for this transmission.

MATING OR RELATED COMPONENTS

BRIEF DESCRIPTION

APPLY COMPONENTS - 4-5-6 CLUTCH

APPLY COMPONENTS - 4-5-6 CLUTCH DAMPENER

plates. This disengages the 4-5-6 clutch plates (434), and clutch plate assemblies (433), from the backing plate (432) and disconnects the 4-5-6 (w/turbine shaft) housing assembly (441) from the hub assembly (58), thus the output carrier will not be driven at torque converter turbine speed.

➤

➤

The clutch apply cavity is kept full of fluid by the clutch exhaust backfill circuit. Compensator feed fluid is fed into the cavity behind the piston to counteract the centrifugal pressure forces created by the fluid within the apply cavity. The compensator feed fluid assists the clutch return spring to keep the piston in the released position when commanded off. 4-5-6 (W/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

4-5-6 CLUTCH (W/OUTPUT CARRIER SHAFT AND DAMPENER) HUB ASSEMBLY (58)

If the 4-5-6 clutch apply fluid does not completely exhaust from behind the piston, there could be a partial apply, or drag, of the 4-5-6 clutch plates. If the 4-5-6 clutch is inoperative, there will be no 4th, 5th or 6th gears available.

4-5-6 CLUTCH: 4-5-6 4-5-6 4-5-6 4-5-6 (W/TURBINE SHAFT) CLUTCH CLUTCH CLUTCH HOUSING SPRING PISTON PLATE ASSEMBLY (438) DAM (434) (441) ASSEMBLY (437)

4-5-6 CLUTCH BACKING PLATE (432)

4-5-6 CLUTCH DAMPENER:

The 4-5-6 clutch dampener (476) is located inside the 4-5-6 clutch (w/output carrier shaft) hub assembly (475). The dampener apply plate (477) and the dampener retaining ring (478) are also housed in the hub assembly (475).

4-5-6 CLUTCH APPLY:

To apply the 4-5-6 clutch, 4-5-6 clutch COMPENSATOR FEED fluid is fed through the fluid pump FLUID cover (219), through the turbine shaft, and behind the piston assembly (439). 4-5-6 clutch fluid pressure moves the piston to compress the spring (438). As fluid pressure increases, the piston compresses the clutch plates until they are held against the backing plate (432). Also included in the assembly is a 4-5-6 clutch (waved) plate (435) that TURBINE helps cushion the apply of the 4-5SHAFT FLUID 6 clutch. Behind the piston is a piston SEAL RING 4-5-6 CLUTCH dam assembly (437), which acts as the (442) APPLY back side of the compensator fluid cavity. FLUID When fully applied, the clutch plates (434), clutch plate assemblies (433), and 4-5-6 clutch (waved) plate (435) are locked together, thereby holding the housing assembly and the hub assembly (58) together. Since the output carrier (490) is splined to the hub assembly, this forces the 4-5-6 clutch and the output carrier to rotate at the same speed as the torque converter turbine assembly.

4-5-6 CLUTCH PISTON DAM RETAINING RING (436)

438

437

436

435

434

4-5-6 CLUTCH (WAVED) PLATE (435)

➤

4-5-6 CLUTCH PISTON ASSEMBLY (439)

BONDED FRICTION MATERIAL

4-5-6 4-5-6 CLUTCH CLUTCH PLATE BACKING ASSEMBLY PLATE (433) RETAINING RING (431)

433

432

475

476

4-5-6 CLUTCH DAMPENER RETAINING RING (478)

477

478

431

➤

439

4-5-6 CLUTCH DAMPENER APPLY RING (477)

Wear of the dampener friction material may result in a vibration noise during a 4-5-6 clutch apply or release.

To release the 4-5-6 clutch, 4-5-6 clutch fluid exhausts from the piston, through the turbine shaft and into the fluid pump cover (219). Spring force from the 4-5-6 clutch spring (438), and compensator feed fluid, moves the piston away from the clutch 441

The 4-5-6 clutch dampener is designed to dissipate or minimize unwanted clutch vibration as well as to eliminate or reduce the noise that may be associated with it. A paper friction material is bonded to both sides of the dampener, and contacts the 4-5-6 clutch hub (475) and the dampener apply plate (477). When the 4-5-6 clutch is applied or released, the possible vibration and noise related to these actions are transferred to the dampener through the bonded friction material. The vibration and noise is then absorbed or dissipated by the dampener. The dampener is in contact with lubrication fluid, but does not require any apply fluid force.

4-5-6 CLUTCH RELEASE:

442

4-5-6 CLUTCH DAMPENER (476)

➤

The 4-5-6 clutch assembly is located in the 4-5-6 (w/turbine shaft) housing assembly (441), which is splined to the torque converter turbine assembly. The external teeth on the 4-5-6 clutch plates (434) are splined to the 4-5-6 clutch housing while the internal teeth on the 4-5-6 clutch plate assemblies (433) are splined to the 4-5-6 clutch (w/output carrier shaft and dampener) hub assembly (58). The 4-5-6 clutch is applied when the transmission is in 4th, 5th, or 6th gear ranges, to transfer engine torque to the output carrier assembly (68).

4-5-6 CLUTCH (W/OUTPUT CARRIER SHAFT) HUB ASSEMBLY (475)

20

Figure 20

Figure 21

CUTAWAY VIEW

21

DISASSEMBLED VIEW

Figure 17

17

APPLY COMPONENTS - 1-2-3-4 CLUTCH 1-2-3-4 AND 3-5 REVERSE CLUTCH HOUSING ASSEMBLY (427)

disengages the 1-2-3-4 clutch plates (409), and clutch plate assemblies (408) from the backing plate (407) and disconnects the housing assembly (427) from the hub (61). The clutch apply cavity is kept full of fluid by the clutch exhaust backfill circuit. Compensator feed fluid is fed into the cavity behind the piston to counteract the centrifugal pressure forces created by the fluid within the apply cavity. The compensator feed fluid assists the clutch return spring to keep the piston in the released position when commanded off. If the 1-2-3-4 apply fluid does not completely exhaust from behind the piston, there could be a partial apply, or drag, of the 1-2-3-4 clutch plates. If the 1-2-3-4 clutch is inoperative, there will be no 1st, 2nd, 3rd or 4th gears available.

1-2-3-4 CLUTCH PISTON (414)

1-2-3-4 CLUTCH:

The 1-2-3-4 clutch assembly is located in the 1-2-3-4 and 3-5 reverse clutch housing assembly (427), and rides on the fluid pump cover hub. The external teeth on the 1-2-3-4 clutch plates (409) are splined to the housing assembly while the internal teeth on the 1-2-3-4 clutch plate assemblies (408) are splined to the 1-2-3-4 clutch hub (61). The 1-2-3-4 clutch is applied when the transmission is in 1st, 2nd, 3rd, and 4th gears. 1-2-3-4 CLUTCH APPLY:

To apply the 1-2-3-4 clutch, 1-2-3-4 clutch apply fluid is fed through the fluid pump cover (219) and into the inner hub of the 1-2-3-4 and 3-5 reverse clutch housing assembly (427). Feed holes in the inner hub allow 1-2-3-4 clutch apply fluid to enter the housing between the 1-2-3-4 clutch piston (414) and the 1-2-3-4 clutch piston housing (417). 1-2-3-4 clutch fluid pressure moves the piston to compress the 1-2-3-4 clutch spring (413). As fluid pressure increases, the piston compresses the clutch plates until they are held against the 1-2-3-4 clutch backing plate (407). Also included in the assembly is a 1-2-34 clutch (waved) plate (410) that helps cushion the apply of the 1-2-3-4 clutch. When fully applied, the 1-2-3-4 clutch plates (409), clutch plate assemblies (408) and clutch (waved) plate (410) are locked together, thereby holding the housing assembly (427) and the hub (61) together. This forces the hub to rotate at the same speed as the housing assembly (427). 1-2-3-4 CLUTCH RELEASE:

To release the 1-2-3-4 clutch, 1-2-3-4 clutch fluid exhausts from the piston, through the inner hub of the housing assembly and into the fluid pump cover (219). Spring force from the 1-2-3-4 clutch spring (413), and compensator feed fluid moves the piston away from the clutch plates. This

425

18

424

423

417

416

415

414

1-2-3-4 CLUTCH (WAVED) PLATE (410)

1-2-3-4 CLUTCH SPRING (413)

1-2-3-4 CLUTCH 1-2-3-4 PISTON CLUTCH DAM PISTON RETAINING DAM RING ASSEMBLY (411) (412)

1-2-3-4 CLUTCH PISTON SEAL (416) 1-2-3-4 CLUTCH PISTON HOUSING RETAINING RING (415)

1-2-3-4 CLUTCH APPLY FLUID

COMPENSATOR FEED FLUID

1-2-3-4 CLUTCH PISTON HOUSING SEAL (424)

1-2-3-4 CLUTCH BACKING PLATE (407)

1-2-3-4 CLUTCH PISTON HOUSING SEAL (425) 1-2-3-4 CLUTCH PISTON 1-2-3-4 1-2-3-4 INNER SEAL CLUTCH CLUTCH PLATE (423) (409) PISTON HOUSING (417)

413

412

411

Figure 18

410

1-2-3-4 CLUTCH PLATE ASSEMBLY (408)

409

408

1-2-3-4 CLUTCH BACKING PLATE RETAINING RING (429)

407

429

APPLY COMPONENTS - 3-5 REVERSE CLUTCH 1-2-3-4 AND 3-5 REVERSE CLUTCH HOUSING ASSEMBLY (427)

The clutch apply cavity is kept full of fluid by the clutch exhaust backfill circuit. Compensator feed fluid is fed into the cavity behind the piston to counteract the centrifugal pressure forces created by the fluid within the apply cavity. The compensator feed fluid assists the clutch return spring to keep the piston in the released position when commanded off. If the 3-5 reverse clutch apply fluid does not completely exhaust from behind the piston, there could be a partial apply, or drag, of the 3-5 reverse clutch. If the 3-5 reverse clutch is inoperative, there will be no 3rd, 5th, or reverse gears available.

3-5 REVERSE CLUTCH PISTON OUTER 3-5 REVERSE SEAL (422) CLUTCH PISTON (421)

3-5 REVERSE CLUTCH:

The 3-5 reverse clutch assembly is located in the 1-2-3-4 and 3-5 reverse clutch housing assembly (427). The external teeth on the 3-5 reverse clutch plates (403) are splined to the housing assembly while the internal teeth on the 3-5 reverse clutch plate assemblies (402) are splined to the 2-6 and 3-5 reverse clutch hub assembly (64). The 3-5 reverse clutch is applied when the transmission is in 3rd, 5th or reverse gear.

3-5 REVERSE CLUTCH SPRING (420)

3-5 3-5 REVERSE REVERSE CLUTCH CLUTCH PLATE PLATE (403) ASSEMBLY (402)

3-5 REVERSE CLUTCH BACKING PLATE (401)

3-5 REVERSE CLUTCH APPLY:

To apply the 3-5 reverse clutch, 3-5 reverse clutch apply fluid is fed through the fluid pump cover (219) and behind the 3-5 reverse clutch piston (421). 3-5 reverse clutch fluid pressure forces the piston against the 3-5 reverse clutch apply ring (405) and the 3-5 reverse clutch spring (420). As fluid pressure increases, the piston compresses the clutch plates together until they are held against the 3-5 reverse COMPENSATOR FEED clutch backing plate (401). Also included FLUID in the assembly is a 3-5 reverse clutch (waved) plate (404) that helps cushion the apply of the 3-5 reverse clutch.

3-5 REVERSE CLUTCH APPLY FLUID 3-5 REVERSE CLUTCH BACKING PLATE RETAINING RING (400)

When fully applied, the 3-5 reverse clutch plates (403), clutch plate assemblies (402) and clutch (waved) plate (404) are locked together, thereby holding the housing assembly (427) and the hub (64) together. This forces the hub to rotate at the same speed as the housing assembly (427). 3-5 REVERSE CLUTCH RELEASE:

To release the 3-5 reverse clutch, 3-5 reverse clutch apply fluid exhausts through the 3-5 reverse clutch apply fluid circuit, allowing pressure at the 3-5 reverse clutch piston (421) to decrease. Spring force from the 3-5 reverse clutch spring (420), and compensator feed fluid move the 3-5 reverse clutch apply ring (405) away from the clutch pack. This disengages the 3-5 reverse clutch plates (403), clutch plate assemblies (402) from the backing plate (401) and disconnects the housing assembly (427) from the hub (64). 422

421

418

419

420

3-5 REVERSE CLUTCH PISTON INNER SEAL (419)

405

404

Figure 19

3-5 REVERSE CLUTCH PISTON DAM SEAL (418)

403 402

3-5 REVERSE CLUTCH APPLY RING (405)

3-5 REVERSE CLUTCH (WAVED) PLATE (404)

401

400

19

APPLY COMPONENTS - 4-5-6 CLUTCH plates. This disengages the 4-5-6 clutch plates (434), and clutch plate assemblies (433), from the backing plate (432) and disconnects the 4-5-6 (w/turbine shaft) housing assembly (441) from the hub assembly (58), thus the output carrier will not be driven at torque converter turbine speed. The clutch apply cavity is kept full of fluid by the clutch exhaust backfill circuit. Compensator feed fluid is fed into the cavity behind the piston to counteract the centrifugal pressure forces created by the fluid within the apply cavity. The compensator feed fluid assists the clutch return spring to keep the piston in the released position when commanded off. 4-5-6 (W/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

If the 4-5-6 clutch apply fluid does not completely exhaust from behind the piston, there could be a partial apply, or drag, of the 4-5-6 clutch plates. If the 4-5-6 clutch is inoperative, there will be no 4th, 5th or 6th gears available.

4-5-6 CLUTCH:

The 4-5-6 clutch assembly is located in the 4-5-6 (w/turbine shaft) housing assembly (441), which is splined to the torque converter turbine assembly. The external teeth on the 4-5-6 clutch plates (434) are splined to the 4-5-6 clutch housing while the internal teeth on the 4-5-6 clutch plate assemblies (433) are splined to the 4-5-6 clutch (w/output carrier shaft and dampener) hub assembly (58). The 4-5-6 clutch is applied when the transmission is in 4th, 5th, or 6th gear ranges, to transfer engine torque to the output carrier assembly (68).

4-5-6 4-5-6 4-5-6 4-5-6 (W/TURBINE SHAFT) CLUTCH CLUTCH CLUTCH HOUSING SPRING PISTON PLATE ASSEMBLY (438) DAM (434) (441) ASSEMBLY (437)

4-5-6 CLUTCH BACKING PLATE (432)

4-5-6 CLUTCH APPLY:

To apply the 4-5-6 clutch, 4-5-6 clutch COMPENSATOR fluid is fed through the fluid pump FEED FLUID cover (219), through the turbine shaft, and behind the piston assembly (439). 4-5-6 clutch fluid pressure moves the piston to compress the spring (438). As fluid pressure increases, the piston compresses the clutch plates until they are held against the backing plate (432). Also included in the assembly is a 4-5-6 clutch (waved) plate (435) that TURBINE helps cushion the apply of the 4-5-6 SHAFT FLUID clutch. Behind the piston is a piston 4-5-6 SEAL RING dam assembly (437), which acts as the back CLUTCH (442) APPLY side of the compensator fluid cavity. When FLUID fully applied, the clutch plates (434), clutch plate assemblies (433), and 4-5-6 clutch (waved) plate (435) are locked together, thereby holding the housing assembly and the hub assembly (58) together. Since the output carrier (490) is splined to the hub assembly, this forces the 4-5-6 clutch and the output carrier to rotate at the same speed as the torque converter turbine assembly.

4-5-6 CLUTCH PISTON DAM RETAINING RING (436)

4-5-6 CLUTCH PISTON ASSEMBLY (439)

4-5-6 CLUTCH RELEASE:

To release the 4-5-6 clutch, 4-5-6 clutch fluid exhausts from the piston, through the turbine shaft and into the fluid pump cover (219). Spring force from the 4-5-6 clutch spring (438), and compensator feed fluid, moves the piston away from the clutch 442

20

441

439

438

437

436

Figure 20

435

434

4-5-6 CLUTCH (WAVED) PLATE (435)

4-5-6 4-5-6 CLUTCH CLUTCH PLATE BACKING ASSEMBLY PLATE (433) RETAINING RING (431)

433

432

431

APPLY COMPONENTS - 4-5-6 CLUTCH DAMPENER

4-5-6 CLUTCH (W/OUTPUT CARRIER SHAFT AND DAMPENER) HUB ASSEMBLY (58)

4-5-6 CLUTCH (W/OUTPUT CARRIER SHAFT) HUB ASSEMBLY (475)

4-5-6 CLUTCH DAMPENER (476)

4-5-6 CLUTCH DAMPENER:

The 4-5-6 clutch dampener (476) is located inside the 4-5-6 clutch (w/output carrier shaft) hub assembly (475). The dampener apply plate (477) and the dampener retaining ring (478) are also housed in the hub assembly (475). The 4-5-6 clutch dampener is designed to dissipate or minimize unwanted clutch vibration as well as to eliminate or reduce the noise that may be associated with it. A paper friction material is bonded to both sides of the dampener, and contacts the 4-5-6 clutch hub (475) and the dampener apply plate (477). When the 4-5-6 clutch is applied or released, the possible vibration and noise related to these actions are transferred to the dampener through the bonded friction material. The vibration and noise is then absorbed or dissipated by the dampener. The dampener is in contact with lubrication fluid, but does not require any apply fluid force.

4-5-6 CLUTCH DAMPENER APPLY RING (477)

Wear of the dampener friction material may result in a vibration noise during a 4-5-6 clutch apply or release. BONDED FRICTION MATERIAL

475

476

Figure 21

4-5-6 CLUTCH DAMPENER RETAINING RING (478)

477

478

21

APPLY COMPONENTS - 2-6 CLUTCH 2-6 CLUTCH RELEASE: CENTER SUPPORT ASSEMBLY (459)

To release the 2-6 clutch, 2-6 clutch fluid exhausts through the center support assembly and into the transmission case, allowing pressure at the 2-6 clutch piston assembly (457) to decrease. In the absence of fluid pressure, spring force from the 2-6 clutch spring (456) moves the piston assembly (457) away from the clutch pack. This disengages the 2-6 clutch plates (452) and clutch plate assemblies (453) from the backing plate (451), thereby allowing the 2-6 and 3-5 reverse clutch (w/output carrier outer sun gear shaft) hub assembly (64) to rotate freely. If the 2-6 apply fluid does not fully exhaust, the 2-6 clutch could partially apply or drag. If the 2-6 clutch is inoperative, there will be no 2nd or 6th gears.

2-6 CLUTCH:

The 2-6 clutch assembly is located in the center support assembly (459). The center support assembly is splined to the transmission case, and secured by a large retaining ring (66). The external teeth on the 2-6 clutch plates (453) are splined to the center support assembly while the internal teeth on the 2-6 clutch plate assemblies (452) are splined to the 2-6 and 3-5 reverse clutch (w/output carrier outer sun gear shaft) hub assembly (64). The 2-6 clutch is applied only when the transmission is in 2nd or 6th gear.

2-6 CLUTCH BACKING PLATE RETAINING RING (450)

2-6 CLUTCH PLATE (453)

2-6 CLUTCH SPRING RETAINING RING (455)

2-6 2-6 2-6 CLUTCH CLUTCH CLUTCH PISTON SPRING AIR ASSEMBLY (456) BLEED (457) (Orifice Cup Plug)

2-6 CLUTCH APPLY:

To apply the 2-6 clutch, 2-6 clutch fluid is fed through the transmission case into the center support assembly (459). A feed hole in the center support allows fluid to enter behind the 2-6 clutch piston assembly (457). 2-6 clutch fluid pressure moves the piston to compress the 2-6 clutch spring (456). As fluid pressure increases, the 2-6 clutch (waved) plate (454) compresses the clutch plates together until they are held against the backing plate (451). When fully applied, the 2-6 clutch (waved) plate (454), clutch plates (452) and the 2-6 clutch plate assemblies (453) are locked together, thereby holding the center support assembly (459) and the 2-6 and 3-5 reverse clutch (w/output carrier outer sun gear shaft) hub assembly (64) together. The output carrier front sun gear (487) is splined to the end of the 2-6 hub shaft and thus held stationary.

2-6 CLUTCH BACKING PLATE (451)

450

22

451

452

453

Figure 22

2-6 2-6 2-6 CLUTCH CLUTCH CLUTCH (WAVED) APPLY PLATE FLUID ASSEMBLY PLATE (454) (452)

454

455

456

457

APPLY COMPONENTS - LOW and REVERSE CLUTCH CENTER SUPPORT ASSEMBLY (459)

If the low and reverse clutch apply fluid does not fully exhaust, the low and reverse clutch could partially apply or drag.

LOW AND LOW AND LOW AND LOW AND LOW AND LOW AND REVERSE REVERSE REVERSE REVERSE REVERSE REVERSE CLUTCH CLUTCH CLUTCH AIR CLUTCH CLUTCH LOW AND REVERSE CLUTCH: PLATE SPRING PISTON BLEED WAVED PLATE The low and reverse clutch assembly is located in the center ASSEMBLY (469) ASSEMBLY (Orifice Cup PLATE (464) support assembly (459). The center support is splined to the (463) (470) Plug) (465)

transmission case, and secured by a large retaining ring (66). The external teeth on the low and reverse clutch plates (464) are splined to the center support assembly while the internal teeth on the low and reverse clutch plate assemblies (463) are splined to the low clutch sprag assembly (467). The low and reverse clutch is applied only when the transmission is in 1st or reverse gears.

LOW CLUTCH SPRAG ASSEMBLY (467)

LOW AND REVERSE CLUTCH APPLY:

To apply the low and reverse clutch, low and reverse clutch fluid is fed through the transmission case into the center support assembly (459). A feed hole in the center support allows fluid to enter behind the low and reverse clutch piston assembly (470). Low and reverse clutch fluid pressure moves the piston to compress the low and reverse clutch spring (469). As fluid pressure increases, the low and reverse clutch (waved) plate (465) compresses the clutch plates together until they are held against the backing plate (462).

LOW CLUTCH SPRAG SEAL (468)

When fully applied, the low and reverse clutch (waved) plate (465), clutch plates (464) and clutch plate assemblies (463) are locked together, thereby holding the low clutch sprag assembly outer race. The output carrier assembly (68) is splined to the low clutch sprag assembly outer race. Therefore, when the low and reverse clutch is applied, the output carrier will be held stationary.

LOW AND REVERSE CLUTCH SPRING RETAINING RING (466)

LOW AND REVERSE CLUTCH RELEASE:

To release the low and reverse clutch, low and reverse clutch fluid exhausts through the center support assembly and into the transmission case, allowing pressure at the low and reverse clutch piston assembly (470) to decrease. In the absence of fluid pressure, spring force from the low and reverse clutch spring (469) moves the piston (470) away from the clutch pack. This disengages the low and reverse clutch plates (464) and clutch plate assemblies (463) from the backing plate (462), thereby allowing the low clutch sprag assembly outer race and the output carrier (490) to rotate freely.

470

469

468

467

466

REVERSE FLUID

465

464

Figure 23

LOW AND LOW AND REVERSE REVERSE REVERSE CLUTCH CLUTCH LOW BACKING BACKING FLUID PLATE PLATE RETAINING (462) RING (461)

463

462

461

23

APPLY COMPONENTS - LOW CLUTCH SPRAG greater than the distance between the inner and outer race, causing the sprags to “lock” against the low clutch sprag outer race (A).

LOW CLUTCH SPRAG ASSEMBLY (467)

LOW CLUTCH SPRAG RELEASED:

The low clutch sprag releases when the sprags pivot toward their short diagonals. The length of the short diagonals (2) is less than the distance between the inner and outer race, allowing the outer race to overrun the sprags. A damaged low clutch sprag can cause no 1st gear (unless low and reverse clutch is applied).

A bound up sprag can cause tie up in 2nd, 3rd, 4th, 5th and 6th gears,

LOW CLUTCH SPRAG:

The low clutch sprag assembly (467) is located between the low and reverse clutch assembly and the center support hub. The inner race (B) of the sprag assembly is splined to the center support, and the outer race (A) is splined to the internal teeth of the low and reverse clutch plate assemblies (463), and to the output carrier assembly (68). The low clutch sprag is a type of one-way clutch that prevents the output carrier assembly (68) from rotating in the direction opposite of engine rotation. The low clutch sprag is holding when the transmission is in 1st gear and 1st gear braking. However, when the throttle is released in 1st gear, the low clutch sprag will overrun and allow the vehicle to coast, until engine braking is required.

LOW CLUTCH SPRAG ASSEMBLY (D)

LOW CLUTCH SPRAG OUTER RACE (A)

LOW CLUTCH SPRAG RETAINING RING (G)

LOW CLUTCH SPRAG HOLDING:

In first gear, power flow attempts to drive the output carrier in the direction opposite of engine rotation and pivots the sprags toward their long diagonals. The length of the long diagonals (1) is CLUTCH SPRAG HOLDING OUTER RACE HELD

1

STATIONARY

LOW CLUTCH SPRAG OUTER RACE (A)

LOW CLUTCH SPRAG INNER RACE (B) SPRAG IS VIEWED FROM THIS DIRECTION

OUTER RACE OVERRUNNING CLUTCH SPRAG

2

STATIONARY

LOW CLUTCH SPRAG INNER RACE (B)

24

A

LOW CLUTCH SPRAG INNER RACE (B)

LOW CLUTCH SPRAG OUTER RACE (A) OVERRUNNING

B

C

D

Figure 24

C

LOW CLUTCH SPRAG END BEARING (C)

F

LOW CLUTCH SPRAG RETAINER PLATE (F)

G

PLANETARY GEARSETS PLANETARY GEARSETS

Planetary gearsets are commonly used in automatic transmissions as the primary method of multiplying the torque, or twisting force, of the engine (reduction). Planetary gearsets are also used to reverse the direction of rotation, function as a coupling for direct drive, and provide an overdrive gear ratio. Planetary gearsets are so named because of their physical arrangement. All planetary gearsets contain at least three main components: • a sun gear at the center of the gearset, • a carrier assembly with planet pinion gears that rotate around the sun gear and, • an internal (ring) gear that encompasses the entire gearset. The gears are designed such that several gear teeth are always in contact, or mesh, at the same time. This design distributes the energy forces over several gear teeth for greater strength and eliminates potential clash that is a common occurrence in manual transmissions when gear teeth go in and out of mesh. Another benefit of planetary gearsets is that shafts are generally used for input and output components and can be arranged on the same axis, thus providing a very compact unit. The Hydra-matic 6 Speed RWD transmission uses two planetary gearsets, an input and output. Figures 25, 26 and 27 show the gearsets and their respective components. These figures also graphically explain how the planetary gearsets are used to achieve each of the transmission's six forward gear ratios and Reverse. Input Planetary Gearset

The input planetary gearset is comprised of a sun gear (53), a

planetary carrier (52) and an internal gear (part of the 4-5-6 clutch housing and turbine shaft assembly). The input planetary gearset is used in all ranges, except 6th gear. Output Planetary Gearset

The output planetary gearset is a dual pinion compound gearset that resembles a combination of two gearsets. This gearset consists of three sets of pinion gears, one front and two rear, (inner and outer)

Torque

When engine torque is transferred through a gearset, the output torque from the gearset can either increase, decrease, or remain the same. The output torque achieved depends on: • which member of the gearset provides the input torque, • which member of the gearset (if any) is held stationary, and, • which member of the gearset provides the output torque. If output torque is greater than input torque, the gearset is operating in reduction (1st, 2nd, 3rd, 4th and Reverse gears). If output torque is less than input torque, then the gearset is operating in overdrive (5th and 6th gear). Torque vs. Speed

One transmission operating condition directly affected by input and output torque through a gearset is the relationship of torque with output speed. As the transmission shifts from 1st to 2nd through 6th gear, the overall output torque to the wheels decreases as the speed of the vehicle increases (when input speed and input torque are held constant). Higher output torque is needed at low vehicle speed (1st, 2nd and 3rd gears) to provide the power to move the vehicle from a standstill. However, once the vehicle is moving and the speed of the vehicle increases (4th, 5th and 6th gears), less output torque is required to maintain that speed. This provides for a more efficient operation of the powertrain.

OUTPUT CARRIER INTERNAL FRONT GEAR (495)

INPUT INTERNAL GEAR

INPUT SUN GEAR (53) INPUT CARRIER ASSEMBLY (52)

in one planetary carrier (68), two sun gears – output carrier front (487) and output carrier rear (489), and two internal gears – output internal front (495) and output internal rear (497). The front pinion gears and the rear outer pinion gears share a long pinion shaft, and the rear inner pinion gears use a short pinion shaft. The front sun gear is in constant mesh with the output carrier front pinion gears. The rear sun gear is in constant mesh with the output carrier rear inner pinion gears. The output carrier rear outer pinion gears are in constant mesh with both the output carrier rear inner pinion gears, and the rear internal gear (497). The front pinion gears are in constant mesh with the output carrier internal front gear (495). Also, the output carrier internal gears are splined into the output shaft, which acts as a part of the output planetary gearset.

OUTPUT CARRIER ASSEMBLY (68)

OUTPUT CARRIER FRONT PINION GEAR

INPUT PLANETARY GEARSET

OUTPUT CARRIER REAR OUTER PINION GEAR

OUTPUT CARRIER FRONT SUN GEAR (487)

OUTPUT PLANETARY GEARSET

Figure 25

OUTPUT CARRIER INTERNAL REAR GEAR (497) OUTPUT CARRIER REAR SUN GEAR (489) OUTPUT CARRIER REAR INNER PINION GEAR

25

PLANETARY GEARSETS

OUTPUT PLANETARY GEARSET COMPONENTS

OUTPUT CARRIER FRONT SUN GEAR (487)

INPUT CARRIER ASSEMBLY (52)

INPUT INTERNAL GEAR

INPUT SUN GEAR (53)

OUTPUT CARRIER ASSEMBLY (68)

OUTPUT CARRIER INTERNAL FRONT GEAR (495)

OUTPUT CARRIER REAR SUN GEAR (489)

4-5-6 (w/ TURBINE SHAFT) CLUTCH ASSEMBLY (56)

OUTPUT CARRIER INTERNAL REAR GEAR (497)

INPUT PLANETARY GEARSET COMPONENTS

Figure 26 REDUCTION:

Increasing the output torque is known as operating in reduction because there is a decrease in the speed of the output member proportional to the increase in the output torque. Therefore, with a constant input speed, the output torque increases when the transmission is in a lower gear, or higher gear ratio. Reduction occurs in 1st through 4th gears and Reverse. Each of these ranges use the input planetary gearset for an initial reduction step before powerflow continues to the output planetary gearset, where the final output ratio is achieved. The input planetary gearset functions the same in each range. The input internal gear, which is splined and staked into the 4-5-6 (w/ turbine shaft) clutch assembly (56), is driving, the input sun gear (53) is held (splined to the pump hub), and the input carrier (52) is driven. The input carrier is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51), which is turning in reduction from the input carrier pinions walking around the stationary sun gear. OVERDRIVE:

Overdrive enables the output speed of the transmission to be greater than the input speed. This mode of operation allows the vehicle to maintain a given road speed with reduced engine speed to improve fuel economy. In Overdrive, the output speed increases while the output torque decreases proportionally. Overdrive occurs in 5th and 6th gears. In 4th and 5th gears powerflow travels through the input gearset, and continues to the output gearset. Without a member of the output gearset being held (grounded), the two planetary gearsets act to-

26

gether through differential speed connections to achieve the correct 4th or 5th gear ratio. In 6th gear, powerflow does not travel through the input planetary gearset. Powerflow travels through the output planetary gearset, where the output carrier is driving, the front output sun gear is held and the output carrier pinion gears walk around the stationary sun gear and drive the output front internal gear in a ratio of 0.667:1. REVERSE:

A planetary gearset reverses the direction of powerflow rotation when the carrier assembly is held stationary and power is applied to the sun gear. This causes the pinion gears to act as idler gears and drive the internal gear in the opposite direction. Once again, powerflow travels through the input planetary carrier for an initial reduction of 1.532:1, then continues to the output carrier. The output front sun gear is driving, the output carrier is held stationary, and the pinion gears are forced to walk around the stationary sun gear. The pinion gears drive the output front internal gear in the opposite direction of engine rotation. Reverse has a ratio reduction of 3.064:1. Gear ratios are based on the 6L80 application. See page 11 for the complete list of ratios. Refer to the powerflow section on page 49 for a complete description of clutch combinations used to hold and/or drive the planetary gearsets for each gear range. Gearset failure can cause noise and loss of drive.

PLANETARY GEARSETS REDUCTION REVERSE

REDUCTION SECOND GEAR

REDUCTION FIRST GEAR DRIVEN

DRIVING

DRIVING DRIVING HELD

DRIVING DRIVEN DRIVEN

REDUCTION SECOND GEAR

REDUCTION THIRD GEAR DRIVING

DRIVEN HELD DRIVEN

INPUT PLANETARY GEARSET

DRIVING

HELD

REDUCTION THIRD GEAR

DRIVEN DRIVEN DRIVING DRIVEN

DRIVEN

Pinions do not rotate. Sun gears, internal gears and carrier rotate at the same speed.

DRIVING

REDUCTION FOURTH GEAR

Carrier rotates faster than output speed.

OVERDRIVE SIXTH GEAR

OVERDRIVE FIFTH GEAR HELD DRIVING

DRIVEN DRIVEN DRIVING

DRIVING

DRIVING

DRIVEN

DRIVING

Figure 27

27

HYDRAULIC CONTROL COMPONENTS The previous sections of this book were used to describe some of the mechanical component operations of the Hydra-matic 6 Speed RWD transmission. In the Hydraulic Control Components section a detailed description of individual components used

TORQUE CONVERTER (W/FLUID PUMP) HOUSING ASSEMBLY (2)

in the hydraulic system will be presented. These hydraulic control components apply and release the clutch packs to provide automatic shifting of the transmission.

CONTROL SOLENOID (W/BODY AND TCM) VALVE ASSEMBLY (314) COMPONENT DESCRIPTION LOCATED IN ELECTRICAL COMPONENTS SECTION

CONTROL VALVE LOWER BODY ASSEMBLY (307)

CONTROL VALVE UPPER BODY ASSEMBLY (304)

28

Figure 28

HYDRAULIC CONTROL COMPONENTS FLUID PUMP ASSEMBLY

TORQUE CONVERTER HOUSING (203)

SLIDE FLUID SEAL RING VANE ROTOR (209) RING GUIDE (207) (208)

SLIDE O-RING SEAL (210)

SLIDE (212)

SLIDE PIVOT PIN (215)

VANE RING SLIDE (207) SLIDE SEAL SEAL SUPPORT (213) (214)

SLIDE OUTER SPRING (211)

VANE (216)

PUMP COVER ASSEMBLY (219)

ROTOR (217)

FLUID PUMP ASSEMBLY

The fluid pump assembly contains a variable displacement, vane type pump, located in the torque converter housing (203). When the engine is cranking, the torque converter pump hub, which is keyed to the fluid pump rotor (217), turns the rotor at cranking speed. As the fluid pump rotor and the fluid pump vanes (216) begin to rotate, the volume of fluid between the vanes is at its maximum, creating a vacuum at the pump intake port. The vacuum allows atmospheric pressure, acting on the fluid in the bottom pan, to prime the pump quickly and pressurize the hydraulic system when the engine is running.

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

1

LINE

SLIDE PIVOT PIN (215)

Fluid from the transmission bottom pan (29) is drawn through the fluid filter assembly (26) and into the fluid pump intake (suction) fluid circuit. This fluid is then forced to rotate around the fluid pump slide (212) to the pump outlet port where the clearance between the fluid pump slide and the fluid pump rotor decreases. Decreasing the volume pressurizes the fluid and forces the fluid into the line pressure fluid circuit. This fluid is directed to the pressure regulator valve and becomes the main supply of fluid to the various components and hydraulic circuits in the transmission.

2

VANE (216) LINE

DECREASE

SLIDE (212)

ROTOR (217) VANE RING (207) SLIDE OUTER SPRING (211)

FLUID PAN (29)

The events described above occur when the pump is operating at maximum output. Since most normal driving conditions do not require maximum output, the pressure regulator valve will move far enough against spring force to allow pressurized fluid to enter the decrease fluid circuit. Decrease pressure is applied to the backside of the fluid pump slide, and moves the slide against pump slide spring (211) pressure to lower the output of the pump. The result is a control of the pump’s delivery rate of fluid to the hydraulic system.

Pump Related Diagnostic Tips FLUID FILTER ASSEMBLY (26)

Figure 29

• • • •

Transmission Overheating Loss of drive High or low line pressure Slipping clutch or harsh apply

29

HYDRAULIC CONTROL COMPONENTS PRESSURE REGULATION The main components that control line pressure are the line pressure control (PC) solenoid and the pressure regulator valve. The fluid pressure required to apply the clutches varies in relation to throttle position and engine torque. At the pressure regulator valve, line pressure is regulated in response to the following: - Fluid pressure routed from the line PC Solenoid (This fluid pressure is proportional to engine torque – see page 46). PC solenoid line fluid pressure moves the isolator valve (236) against the pressure regulator valve inner spring (235) which acts against the pressure regulator valve (233). - Pressure regulator valve outer spring (234) force. The pressure regulator valve routes line pressure into both the converter feed and the decrease fluid circuits. Converter feed fluid is routed through the converter feed limit valve (220) and the TCC control valve (227) to the torque converter release, and the cooler fluid circuits. Decrease fluid pressure moves the fluid pump slide against the force of the pump slide outer spring (211).

Pressure Regulation

The line PC solenoid regulates fluid pressure as a function of engine torque (minimum signal pressure at low torque, maximum signal pressure at high torque). Line pressure, acting on the end of the pressure regulator valve, moves the valve against spring force and PC solenoid line fluid pressure to a point where line pressure enters both the converter feed and the decrease fluid circuits. Decrease fluid pressure moves the pump slide (212) against spring force and toward the center of the pump cavity. This decreases eccentricity between the pump slide and the rotor which, as a consequence, decreases the pump output capacity. Decrease pressure and the position of the pump slide constantly varies depending on driving conditions and the amount of fluid pressure and volume needed to operate the transmission.

Pressure Regulator Related Diagnostic Tips A stuck or damaged pressure regulator valve could cause: • High or low line pressure • Slipping clutches or harsh apply • Transmission overheating • Low or no cooler/lube flow

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

1

1

LINE

LINE 2

2

212

PRESSURE REGULATOR VALVE

LINE 2a

DECREASE EXH

FLUID PUMP SLIDE AND ROTOR

LINE 3

LINE DECREASE

FLUID PUMP SLIDE AND ROTOR

EXH

➤

LINE 3

PRESSURE REGULATOR VALVE

CONV FD

CONV FD

2a

212

ISOLATOR VALVE

LINE PRESSURE CONTROL SOLENOID

LINE PRESSURE CONTROL SOLENOID

N.H.

N.H.

MINIMUM PUMP OUTPUT

30

PCS LINE

5

MAXIMUM PUMP OUTPUT

Figure 30

SUCTION

ISOLATOR

PCS LINE ACT FD LIM

ISOLATOR VALVE

SUCTION

5

PCS LINE

PCS LINE ACT FD LIM

ISOLATOR

➤

HYDRAULIC CONTROL COMPONENTS VALVES LOCATED IN THE FLUID PUMP COVER ASSEMBLY PRESSURE REGULATOR VALVE TRAIN (233-237) Pressure Regulator Valve (233)

Torque Converter Clutch (TCC) Control Valve (227)

Regulates line pressure in relation to vehicle operating conditions (see page 30 on Pressure Regulation). The pressure regulator valve is biased by PCS line fluid pressure acting on the isolator valve, and inner spring (235), pressure regulator valve outer spring (234) force and line pressure routed to the end of the valve. Line pressure is routed through the valve and into both the converter feed and decrease fluid circuits. • A stuck pressure regulator valve could cause high or low fluid pressure. Isolator Valve (236)

PCS line fluid pressure moves the isolator valve against the pressure regulator valve inner spring (235). The pressure regulator valve inner spring then transfers the force from PCS line fluid pressure to the pressure regulator valve. Therefore, line pressure increases as PCS line fluid pressure increases, which is proportional to throttle position and engine torque. Pressure Relief Ball Valve (225)

The pressure relief ball valve (225) and spring (224) prevent line pressure from exceeding limits that may damage components within the transmission. Line fluid pressure moves the ball against spring force and exhausts until line pressure decreases sufficiently. • A pressure relief ball not seated or damaged could cause high or low fluid pressure.

Controlled by the TCC pressure control (PC) solenoid state, the TCC control valve directs converter feed limit fluid pressure to the release side of the converter clutch and into the cooler fluid circuit when in the release position. The TCC control valve directs regulated apply fluid to the apply side of the converter clutch and converter feed limit fluid directly to the cooler, when in the applied position. The valve is held in the release position (as shown) by spring force when the TCC PC solenoid is OFF. With the TCC PC solenoid ON, PCS TCC fluid pressure increases and moves the valve into the apply position against spring force. If stuck, missing or binding, the TCC control valve or spring may cause:

• Incorrect TCC apply or release • Inadequate lubrication and cooling Converter Feed Limit Valve (220):

When the TCC is released, converter feed fluid passes through the converter feed limit valve, moving the valve against spring force which limits the pressure of the fluid being directed to the converter. This limited fluid then enters the converter feed limit fluid circuit. It is then directed through the TCC control valve and into the release side of the converter preventing overheating. When the TCC applies, converter feed limit fluid is directed to the TCC control valve and then into the cooler feed circuit. If stuck, missing or binding, the converter feed limit valve or spring may cause:

• Incorrect TCC apply or release. • Inadequate lube and cooling. • Converter over-pressurization. FLUID PUMP ASSEMBLY

CONV FD LIMIT

CONV FD LIMIT

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

EXH FRONT LUBE

TCC REL

ISOLATOR

TCC CONTROL VALVE

LINE

COOLER FD TCC APPLY REG APP

PCS TCC

LINE DECREASE

EXH LINE

PRESSURE REGULATOR VALVE

CONVERTER FEED LIMIT LINE

PCS LINE

SUCTION

LINE

Figure 31

31

HYDRAULIC CONTROL COMPONENTS VALVES LOCATED IN THE LOWER CONTROL VALVE BODY Clutch Select Valve 2 (352):

Torque Converter Clutch (TCC) Regulator Valve (355):

Responds to orificed CSV2 enable fluid pressure and force from the clutch select valve 2 spring (353). In Park, Reverse, Neutral and Drive 1st (Engine Braking) the clutch select valve 2 is applied (moved against spring force) to allow CBR1/456 clutch feed fluid to be routed through the valve and then to the CBR1 clutch feed circuit and clutch select valve 3 (352). In Drive 1st, 2nd, 3rd, 4th, 5th and 6th ranges CSV2 latch fluid pressure and clutch select valve 2 spring force moves the valve to a released position. With the valve in this position, Drive fluid from the manual valve can pass through the valve and enter the Drive 1-6 fluid circuit and fluid from the CBR1/456 clutch feed circuit is directed to the 456 clutch feed circuit.

The TCC regulator valve is controlled by PCS TCC fluid pressure on one side of the valve and spring force from the TCC regulator apply valve spring (347) at the other end. When the TCC PC solenoid is energized and PCS TCC fluid pressure is present, the valve regulates Drive 1-6 fluid pressure into the regulated apply fluid passage to the TCC control valve (227) located in the pump. This fluid is then directed to the torque converter to apply the TCC. The TCC regulator apply valve can also be applied by Solenoid 2 fluid acting on the TCC regulator shuttle valve (338). This is done to enable a diagnostic to be run to determine if the TCC control valve is in the correct position.

Clutch Select Valve 3 (352):

Responds to orificed CSV3 enable fluid pressure and force from the clutch select valve 3 spring (353). In Reverse gear range only, the clutch select valve 3 is released to allow reverse fluid pressure to pass through the valve and enter the 3-5 clutch reverse feed fluid circuit. Also, CBR1/CBR feed fluid passes through the valve and enters the CBR fluid circuit. When CSV3 enable fluid pressure applies the valve, CBR fluid exhausts and 456 clutch feed fluid passes through the valve to enter the 456 clutch fluid circuit in Drive 4th, 5th or 6th gear ranges. Compensator Feed Regulator Valve (356):

Line pressure at the compensator feed regulator valve is routed through the valve and into the compensator feed fluid circuit. Compensator feed fluid is routed to the end of the valve, and spring force acting on the other end of the valve, regulate compensator feed fluid pressure. Compensator feed fluid is then routed to the compensators of the 1-2-3-4 clutch, 3-5 reverse clutch and the 4-5-6 clutch assemblies.

32

• TCC regulator valve stuck in the release position would cause no TCC/slip or soft apply. • TCC regulator valve stuck in the apply position would cause harsh TCC apply. Manual Valve (354):

The manual valve is fed by line pressure from the fluid pump assembly and is mechanically linked to the gear selector lever and the transmission manual shift shaft position switch. When a gear range is selected, the manual valve directs line pressure into the various circuits by opening and closing feed passages. The circuits that are fed or exhausted by the manual valve are Reverse, and Drive. Stuck, misaligned or damaged, the manual valve and linkage could cause:

• No reverse • No Drive • Stuck in drive or reverse

HYDRAULIC CONTROL COMPONENTS

PCS TCC

COMP FD

VALVES LOCATED IN THE LOWER CONTROL VALVE BODY

SOL 1

SHTL

EXH

REG APPLY

EXH

MANUAL VALVE

LINE

DRIVE 1-6

EXH

REG APPLY

TCC REGULATOR VALVE

COMPENSATOR FEED REGULATOR VALVE

LINE EXH

REVERSE

EXH

LINE

DRIVE

DRIVE

DRIVE

CSV2 ENABLE CSV3 ENABLE

35 REV CL

EXH DRV B DRIVE BRAKE

DRIVE

CBR 35 CL REV FD

456 CL FD REVERSE

456 CL

EXH

1234 CL DFLT DRV B

CBRI/456 CL FD

DRIVE 1-6

CSV2 LATCH

REVERSE

Figure 32

456 CL CBR 35 CL REV FD

EXH

CBR1/CBR FD

CLUTCH SELECT VALVE 3

EXH

456 CL

1234 CL DFLT FD 1234 CL DFLT CLUTCH SELECT VALVE 2

EXH DRIVE

33

HYDRAULIC CONTROL COMPONENTS VALVES LOCATED IN THE UPPER CONTROL VALVE BODY Actuator Feed Limit Valve (325):

3-5 Reverse Clutch Boost Valve (329):

The pressure control solenoids and the shift solenoids cannot support more than a given fluid pressure. In order not to overpressurize the solenoids, the actuator feed limit valve regulates line fluid pressure into the actuator feed limit fluid circuit. When pressure exceeds a given pressure, the valve limits flow into the circuit, keeping pressure below the given value. Force from the actuator feed limit valve spring (324) and orificed actuator feed limit fluid pressure acting on the end of the valve regulate line pressure as it passes through the valve and enters the feed limit circuit. Actuator feed limit pressures will normally equal line pressure when line pressure is below the calibrated limiting values.

PCS 3-5 reverse clutch fluid pressure acts on a differential area moving the 3-5 clutch boost valve against the 3-5 clutch boost valve spring (330). 3-5 reverse clutch fluid passes through the valve and enters the 3-5 reverse clutch feedback circuit. As PCS 3-5 reverse clutch fluid pressure is increased to a given value, the 3-5 reverse clutch boost valve opens the 3-5 reverse clutch feedback circuit to exhaust. This results in the 3-5 reverse clutch regulator valve moving to the full feed position sending full 3-5 clutch reverse feed pressure (full line pressure) to the clutch. 3-5 Reverse Clutch Regulator Valve (336):

• Stuck in the released position would cause high actuator feed fluid pressure resulting in harsh shift conditions and damaged components. • Stuck in the applied position would cause low actuator feed fluid pressure resulting in no/slipping shift conditions. CBR1/C456 Clutch Regulator Valve (327):

The CBR1/C456 clutch regulator valve responds to orificed PCS CBR1/456 clutch fluid pressure acting on one end of the valve and biased by spring force and CBR1 feedback fluid pressure on the other end of the valve. When applied it regulates orificed line pressure as it passes through the valve and enters the CBR1/456 clutch feed fluid circuit during Park, Reverse, Neutral, 1st (Engine Braking), 4th, 5th and 6th gear ranges. In Drive 1st, 2nd and 3rd gear ranges, the valve is in the released position to allow CBR1 feedback fluid and CBR1/ 456 clutch fluid to be open to exhaust backfill. Also, when in the released or regulating position, drive 1-6 fluid passes through the valve and enters the PS5 fluid circuit. PS5 fluid is then routed to pressure switch 5 and opens the switch. 4-5-6 Boost Valve (329):

PCS CBR1/456 clutch fluid pressure acts on a differential area moving the 4-5-6 clutch boost valve against the 4-5-6 clutch boost valve spring (330). CBR1/456 clutch feed fluid passes through the valve and enters the CBR1 feedback circuit. As PCS CBR1/456 clutch fluid pressure is increased to a given value, the 4-5-6 clutch boost valve opens the CBR1 feedback circuit to exhaust. This results in the CBR1/456 clutch regulator valve moving to the full feed position sending full line pressure to the clutch. 2-6 Clutch Regulator Valve (334) and 2-6 Clutch Regulator Gain Valve (335):

Responds to orificed PCS 2-6 clutch fluid pressure acting on the 2-6 clutch regulator valve gain valve at one end of the valve and it is biased by spring force and orificed 2-6 clutch fluid pressure on the other end of the valve. It regulates orificed 2-6 clutch/1234 clutch feed fluid pressure as it passes through the valve and enters the 2-6 clutch fluid circuit during Drive 2nd and 6th gear ranges. In 6th gear, 456 clutch fluid pressure acts on the 2-6 clutch regulator gain valve to lower the PCS pressure to the valve output pressure ratio. This allows for better control of the 5-6 shift. When in the released position it allows 2-6 clutch fluid to exhaust through the valve into the exhaust backfill fluid circuit. Also, when in the released or regulating position, 2-6 clutch/1234 clutch feed fluid passes through the valve and enters the PS3 fluid circuit. PS3 fluid is then routed to pressure switch 3 and opens the switch.

34

Responds to orificed PCS 3-5 reverse clutch fluid pressure acting on one end of the valve and it is biased by 3-5 reverse clutch spring force and orificed 3-5 reverse clutch feedback fluid pressure on the other end of the valve. When applied, it regulates orificed 3-5 reverse clutch feed fluid pressure as it passes through the valve and enters the 3-5 reverse clutch fluid circuit during Drive 3rd, 5th and reverse gear ranges. When in the released position, it allows 3-5 reverse clutch fluid to exhaust through the valve into the exhaust backfill fluid circuit. Also, when in the released or regulating position, actuator feed limit fluid passes through the valve and enters the PS1 fluid circuit. PS1 fluid is then routed to pressure switch 1 and opens the switch. 1-2-3-4 Clutch Regulator Valve (337):

Responds to orificed PCS 1-2-3-4 clutch fluid pressure acting on one end of the valve and it is biased by 1-2-3-4 clutch regulator valve spring (326) force and orificed 1-2-3-4 clutch feedback fluid pressure on the other end of the valve. When applied, it regulates orificed 1-2-3-4 clutch feed fluid pressure as it passes through the valve and enters the 1-2-3-4 clutch fluid circuit during Drive 1st (engine braking), 1st, 2nd, 3rd and 4th gear ranges. When in the released position, it allows 1-2-3-4 clutch fluid to exhaust through the valve into the exhaust backfill fluid circuit. Also, when in the released or regulating position, 1-2-3-4 clutch feed fluid passes through the valve and enters the PS4 fluid circuit. PS4 fluid is then routed to pressure switch 4 and opens the switch. 1-2-3-4 Clutch Shuttle Valve (338):

Responds to orificed 1-2-3-4 clutch default fluid pressure acting on the end of the valve to force the 1-2-3-4 clutch regulator valve to move to the applied position against spring force and 12-3-4 clutch feedback fluid pressure. In the event of an electrical, TCM or other failure which puts the transmission in default mode, orificed 1-2-3-4 clutch default fluid pressure would move the shuttle valve and 1-2-3-4 clutch regulator valve to the apply position. If this event occurs, the transmission would operate in Drive 3rd or 5th gear, dependent on when the failure occurs. The transmission will also operate in Park, Reverse and Neutral. 1-2-3-4 Clutch Boost Valve (329):

PCS 1-2-3-4 clutch fluid pressure acts on a differential area moving the 1-2-3-4 clutch boost valve against the 1-2-3-4 clutch boost valve spring (330). 1-2-3-4 clutch fluid passes through the valve and enters the 1-2-3-4 clutch feedback circuit. As PCS 1-2-3-4 clutch fluid pressure is increased to a given value, the 1-2-3-4 clutch boost valve opens the 1-2-3-4 clutch feedback circuit to exhaust. This results in the 1-2-3-4 clutch regulator valve moving to the full feed position, sending full 12-3-4 clutch feed pressure (full line pressure) to the clutch.

HYDRAULIC CONTROL COMPONENTS 35 REV CLU

1234 CL

VALVES LOCATED IN THE UPPER CONTROL VALVE BODY

EXH

1234 CL BOOST VALVE PCS 1234 CL

EXH

EXH BF 1234 CL

1-2-3-4 CL REGULATOR VALVE

PS4 EXH

SHTL

1234 CL FDBK

1234 CL DFLT

1234 CL FD PS4 PS1

35 REV CLU

ACT FD LIM

EXH EXH BF

EXH

3-5 REV CL REGULATOR VALVE

PCS 35 REV CL

35 CL REV FD

EXH

35R CL BOOST VALVE

35 REV CL FDBK 456 CL

456 CL 26 CL/1234 CL FD

26 CL/1234 CL FD

ACT FD LIM

26 CL

PS3 EXH

EXHAUST BACKFILL PRESSURE RELIEF VALVE

EXH

PCS 26 CL

EXH BF 26 CL

2-6 CLUTCH REG

PS3

EXH BF LINE

PCS CBRI/456 CL

EXH

ACT FEED LIMIT VALVE

CBRI/456 CL FD

456 CL BOOST VALVE

CBRI FDBK

Figure 33

LINE

26 CL

LINE DRIVE 1-6 PS5 EXH

EXH EXH BF

CBRI/C456 CL REG VALVE

35

HYDRAULIC CONTROL COMPONENTS BALL CHECK VALVES LOCATION AND FUNCTION #1 DRIVE 1-6/DRIVE BRAKING:

#6 2-6 CLUTCH/1-2-3-4 CLUTCH FEED:

Located in the upper control valve body, this "ball shuttle valve" style check ball allows drive braking fluid, in a Drive 1st gear engine braking condition, to enter the 2-6 clutch/1234 clutch feed fluid circuit to apply the 1-2-3-4 clutch. When the transmission is operating in Drive 1st, 2nd, 3rd, 4th, 5th or 6th gear ranges, drive 1-6 fluid seats the ball check valve against the drive braking passage and enters the 2-6 clutch/1234 clutch fluid feed circuit to apply the 1-2-3-4 clutch.

Located in the upper control valve body, this "one way orifice control" style check ball is used to differentiate the flow rate of fluid between applying and releasing the 1-2-3-4 clutch. 26 clutch/ 1234 clutch feed fluid pressure opens the ball check valve while the transmission is operating in Drive 1st (engine braking), 1st, 2nd, 3rd, 4th, 5th or 6th gear ranges. With the ball check valve in this position, 26 clutch/1234 clutch feed fluid flows freely into the 1234 clutch feed fluid passage. When Park, Reverse or Neutral gear is selected after the transmission was operating in Drive, exhausting 1234 clutch feed fluid seats the ball check valve and fluid is forced through orifice #32. This allows for a controlled exhaust of 1234 clutch feed fluid.

#2 SOLENOID 1/REVERSE:

Located in the upper control valve body, this "ball shuttle valve" style check ball is seated against the reverse fluid passage while the transmission is operating in Park, Neutral and Drive 1st (Engine Braking). With the ball check valve in this position, solenoid 1 fluid enters the CSV2 enable fluid circuit to apply the clutch select valve 2. When the transmission is operating in Reverse, the ball check valve seats against the solenoid 1 fluid passage to allow reverse fluid to enter the CSV2 enable fluid circuit and hold the clutch select valve 2 in the applied position. #3 SOLENOID 2/4-5-6 CLUTCH:

Located in the upper control valve body, this "ball shuttle valve" style check ball is seated against the 456 clutch passage while the transmission is operating in Park, Reverse, Neutral, Drive 1st, 2nd and 3rd gear ranges. With the ball check valve in this position, solenoid 2 fluid enters the CSV3 enable fluid circuit to apply the clutch select valve 3. When the transmission is operating in Drive 4th, 5th or 6th gear ranges, the ball check valve seats against the solenoid 2 fluid passage to allow 456 clutch fluid to enter the CSV3 enable fluid circuit and hold the clutch select valve 2 in the applied position. #4 PS5/4-5-6 CLUTCH:

Located in the upper control valve body, this "ball shuttle valve" style check ball is seated against the 456 clutch passage by PS5 fluid while the transmission is operating in Drive 1st, 2nd and 3rd gear ranges. With the ball check valve in this position, PS5 fluid enters the CSV2 latch fluid circuit to hold the clutch select valve 2 in the released position. When the transmission is operating in Drive 4th, 5th or 6th gear ranges, 456 clutch fluid pressure seats the ball check valve against the PS5 fluid passage to allow 456 clutch fluid to enter the CSV2 latch fluid circuit to hold the clutch select valve 2 in the released position. #5 DRIVE 1-6/3-5 REVERSE SUPPLY:

Located in the upper control valve body, this "ball shuttle valve" style check ball is seated against the Drive 1-6 fluid passage by 35 reverse feed fluid while the transmission is operating in Reverse. With the ball check valve in this position, 35 reverse feed fluid enters the 35 reverse supply circuit and is routed to the #7 ball check valve. When the transmission is operating in Drive 1st, 2nd, 3rd, 4th, 5th or 6th gear ranges, Drive 1-6 clutch fluid pressure seats the ball check valve against the 35 reverse feed passage to allow Drive 1-6 clutch fluid to enter the 35 reverse supply fluid circuit.

36

#7 3-5 REVERSE SUPPLY/3-5 REVERSE FEED:

Located in the upper control valve body, this "one way orifice control" style check ball is used to differentiate the flow rate of fluid between applying and releasing the 3-5 reverse clutch. 35 reverse supply fluid pressure seats the ball check valve against the 35 reverse feed passage while the transmission is operating in Reverse, Drive 1st, 2nd, 3rd, 4th, 5th or 6th gear ranges. With the ball check valve in this position, 35 reverse supply fluid is forced through orifice #25 before entering the 35 reverse feed fluid passage. The orifice helps control the apply rate of the 3-5 clutch when the transmission shifts into Reverse, 3rd and 5th gears. When Park or Neutral gear is selected after the transmission was operating in Drive, or Reverse, exhausting 35 reverse feed fluid unseats the ball check valve. This allows for a faster exhaust of 35 reverse feed fluid and a quick release of the 3-5 reverse clutch.

HYDRAULIC CONTROL COMPONENTS BALL CHECK VALVES LOCATION AND FUNCTION

35a

34l

456 CLUTCH

#3

CSV2 ENABLE

14

26

18a

SOL 2

DRIVE 1-6 35 CL REV FEED

9

2 17

11

49

34a

PS5

CSV2 LATCH

21d

54a

DRIVE 1-6

43a

35R SPL

#5

19

456 CLUTCH

#4

38

10

34 38

52

52 10

52

26 CLU/1234 CL FD

45

37

12

51

#6

45

47

52 19 34 24

42

46

34

50

44

51

46

2 16

#1

34

53

9

46

52 24

29

12

52

52

50

29 34 52 52 31

31

34 13

14 52

2 52

52 30

52 51

37c

53b 37b

37a

50

52

25

52

52 52

44 30

21 52 29

52 34

34

31 48

51

51

44

53

31

43 2 21

2 51

12 12

13

32 51 48 51 50

52

21

52

17a

#3

44a

35 REVERSE FD

#7

#7

SOL 1

13

19

35 R SUPPLY

➤

14 21

38

50

52 52 2 52

16

25 52

#2

2 52

38

15

14 15 51

#2

16a

22

15

41

52 37

CSV2 ENABLE

21e

50 52 52 50

44e

44f

40

52

32

24 52 52 27 17 14 34 24 52

51

25

26

13c

36a

11

50

REVERSE

13b

FRONT

39 12

52

27

35

2 52

32 52

#1

#5

26 CLUTCH/1234 CL FEED DRIVE B

25c

25d

33

24

24 25a

#6

21

38

17

52

52

52

14

27 51 26

39

1234 CLUTCH FEED

2

11

49

DRIVE 1-6

12 52

#4

CONTROL VALVE UPPER BODY ASSEMBLY (304)

Figure 34

37

ELECTRICAL COMPONENTS NOTES

38

ELECTRICAL COMPONENTS type of control provides consistent and precise shift points and shift quality based on the operating conditions of the vehicle.

The Hydra-matic 6 Speed RWD transmission incorporates electronic controls that utilize the transmission control module (TCM) to control shift points (through shift solenoids and pressure control solenoids), torque converter clutch (TCC) apply and release [through the torque converter clutch pressure control (TCC PC) solenoid] and line pressure [through the pressure control (PC) solenoid]. In the 6 Speed RWD transmission, the TCM and all of the shift solenoids, PC solenoids, TFT sensor and fluid pressure switches are contained in one unit, the control solenoid (w/body and TCM) valve assembly (314). Electrical signals from various sensors provide information to the TCM about vehicle speed, throttle position, engine coolant temperature, transmission fluid temperature, gear range selector position, engine speed, converter turbine speed, engine load braking and operating mode. The TCM uses this information to determine the precise moment to upshift or downshift, apply or release the TCC, and what fluid pressure is needed to apply the clutches. This

A

B

D

C

TCM

Adaptive shift control technology enables the TCM to continually monitor and compare shift performance to the "optimum" shift, and make adjustments to the factory settings to continually deliver excellent shift quality. If for any reason the entire electronic control system of the transmission, or one of the electrical components within the control solenoid (w body and TCM) valve assembly becomes disabled, the transmission will default to protection mode. If the transmission is in 1st, 2nd or 3rd gear during an electrical failure, the transmission will default to 3rd gear. If the transmission is in 4th, 5th or 6th gear during an electrical failure, the transmission will default to 5th gear.

SERIAL DATA

F

E

G

DLC

H

I

ECM

CAN BUS

K

J

INPUTS INFORMATION SENSORS A. B. C. D. E. F. G. H. I. J. K. L. M. N.

THROTTLE POSITION (TP) SENSOR MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR ENGINE SPEED SENSOR MANIFOLD AIR TEMPERATURE (MAT) SENSOR ENGINE COOLANT TEMPERATURE (ECT) SENSOR TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR TRANSMISSION MANUAL SHIFT SHAFT POSITION SWITCH ASSEMBLY TRANSMISSION INPUT SPEED SENSOR (A/T ISS) TRANSMISSION FLUID PRESSURE SWITCHES TRANSMISSION OUTPUT SPEED SENSOR (A/T OSS) ACCELERATOR PEDAL POSITION (APP) SENSOR BRAKE SWITCH DRIVER SHIFT CONTROL (DSC) SWITCHES OPERATING MODE SELECTION SWITCHES

N

BCM

L

M

OUTPUTS ELECTRONIC CONTROLLERS 

TRANSMISSION CONTROL MODULE (TCM)



ENGINE CONTROL MODULE (ECM)



BODY CONTROL MODULE (BCM)



ELECTRONIC BRAKE AND TRACTION CONTROL MODULE (EBTCM) (NOT SHOWN)



ELECTRONICALLY CONTROLLED TRANSMISSION COMPONENTS 

LINE PRESSURE CONTROL SOLENOID



PRESSURE CONTROL SOLENOID 2



PRESSURE CONTROL SOLENOID 3



PRESSURE CONTROL SOLENOID 4



PRESSURE CONTROL SOLENOID 5



TORQUE CONVERTER CLUTCH (TCC) PRESSURE CONTROL (PC) SOLENOID



SHIFT SOLENOID (SS) 1



SHIFT SOLENOID (SS) 2

DIAGNOSTIC LINK CONNECTOR (DLC)

Figure 35

39

ELECTRICAL COMPONENTS

SLIDING ACTUATOR

TRANSMISSION MANUAL SHIFT SHAFT POSITION SWITCH ASSEMBLY (308)

Manual Shift Shaft Position Switch Logic

TRANSMISSION MANUAL SHIFT SHAFT POSITION SWITCH ASSEMBLY (308):

The transmission manual shift shaft position switch assembly (308), sometimes referred to as an Internal Mode Switch (IMS), is a sliding contact switch that connects to the manual valve located inside the control valve lower body assembly. The four inputs to the TCM from the position switch assembly indicate which transmission gear range is selected. The state of each input is available for display on the scan tool. The four input parameters represented are Signal A, Signal B, Signal C, and Signal P (Parity). A fifth input, signal N (P/N Start), does not input the TCM but rather goes directly to the ECM to determine a Park/Neutral state and allow engine start. Routing Signal N to the ECM will allow the engine to be started with a dead TCM. Signal N is not a signal used by the TCM for manual shift shaft position switch logic.

If the TCM detects an improper signal from the transmission manual shift position shaft switch assembly, a DTC will be activated.

Gear Selector Position Signal A Signal B Signal C Signal P Park LOW HI HI LOW Park/Reverse LOW LOW HI LOW Reverse LOW LOW HI HI Reverse/Neutral HI LOW HI HI Neutral HI LOW HI LOW Neutral/Drive 6 HI LOW LOW LOW Drive 6 HI LOW LOW HI Drive 6/Drive 4 LOW LOW LOW HI Drive 4 LOW LOW LOW LOW Drive 4/Drive 3 LOW HI LOW LOW Drive 3 LOW HI LOW HI Drive 3/Drive 2 HI HI LOW HI Drive 2 HI HI LOW LOW Open HI HI HI HI Invalid HI HI HI LOW Invalid LOW HI HI HI HI = Ignition Voltage LOW = 0 Volts

40

Figure 36

ELECTRICAL COMPONENTS TRANSMISSION SPEED SENSORS Automatic Transmission Input (Shaft) Speed (A/T ISS) Sensor:

The input speed sensor (ISS) is a hall-effect type sensor. The ISS mounts to the control valve upper body assembly and connects to the control solenoid (w/body and TCM) valve assembly through a wire harness and connector. The sensor faces the 1-23-4 and 3-5-R clutch housing and is triggered by splines on the housing outside diameter. The sensor receives 8.3–9.3 volts on the ISS/OSS supply voltage circuit from the TCM. As the 1-23-4 and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the spline profile and speed of the 12-3-4 and 3-5-R clutch housing. This signal is transmitted through the ISS signal circuit to the TCM. The TCM uses the ISS signal to determine line pressure, transmission shift timing, torque converter clutch (TCC) slip speed and gear ratio.

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

ELECTRICAL CONNECTOR

HALL-EFFECT SENSOR W/MAGNETIC PICKUP

OUTPUT SPEED SENSOR

INPUT SPEED SENSOR

INPUT SPEED SENSOR

If the TCM detects an improper signal from the transmission input or output speed sensors, a DTC will be activated.

Automatic Transmission Output Speed (A/T OSS) Sensor: OUTPUT SHAFT ASSEMBLY (70) HALL-EFFECT SENSOR W/MAGNETIC PICKUP

The output speed sensor (OSS) is also a hall-effect type sensor. The OSS mounts to the control valve upper body assembly and connects to the control solenoid (w/body and TCM) valve assembly through a wire harness and connector. The sensor faces the output shaft and is triggered by slots cut into the housing. The sensor receives 8.3–9.3 volts on the ISS/OSS supply voltage circuit from the TCM. As the output shaft rotates, the sensor produces a signal frequency based on the machined slots and speed of the output shaft. This signal is transmitted through the OSS signal circuit to the TCM. The TCM uses the OSS signal to determine line pressure, transmission shift timing, vehicle speed and gear ratio.

OUTPUT SPEED SENSOR

Figure 37

41

ELECTRICAL COMPONENTS Control Solenoid (w Body and TCM) Valve Assembly (314) FILTER PLATE ASSEMBLY (311)

SHIFT SOLENOID 1

TRANSMISSION FLUID TEMPERATURE SENSOR

SHIFT SOLENOID 2

LEAD FRAME 16 PIN CONNECTOR

LINE PRESSURE CONTROL SOLENOID

PRESSURE CONTROL SOLENOID 4 TFP SWITCH 4 TFP SWITCH 1 TFP SWITCH 3 TFP SWITCH 5 PRESSURE CONTROL SOLENOID 5

TCC PRESSURE CONTROL SOLENOID

PRESSURE CONTROL SOLENOID 2

The control solenoid (w/body and TCM) valve assembly bolts directly to the lower and upper valve body assemblies inside the transmission. The solenoid valve assembly utilizes a lead frame system to connect the components to the TCM. There are no wires used for these components. The solenoid valve assembly connects to the engine harness 16-way connector via a pass-thru sleeve. All fluid passages to the switches and solenoids are protected from debris by a serviceable filter plate assembly

(311). In addition to the components shown above, there are two temperature sensors located inside the TCM that are not shown, the TCM Temperature Sensor and the Power Up Temperature Sensor. The above components are diagnosed separately, but are serviced as an assembly.

Automatic Transmission Fluid Temperature (TFT) Sensor:

RESISTOR

The TFT sensor is part of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The TFT sensor is a resistor, or thermistor, which changes value based on temperature. The sensor has a negative-temperature coefficient. This means that as the temperature increases, the resistance decreases, and as the temperature decreases, the resistance increases. The TCM supplies a voltage reference signal to the sensor and measures the voltage drop in the circuit. When the transmission fluid is cold, the sensor resistance is high and the TCM detects high signal voltage. As the fluid temperature warms to a normal operating temperature, the resistance becomes less and the signal voltage decreases. The TCM uses this information to maintain shift quality and torque converter clutch apply quality over operating temperature range.

CONTROL SOLENOID (W/BODY AND TCM) VALVE ASSEMBLY (314)

42

PRESSURE CONTROL SOLENOID 3

If the TCM detects an improper signal from the TFT sensor, a DTC will be activated.

Figure 38

ELECTRICAL COMPONENTS TRANSMISSION FLUID PRESSURE SWITCH 1, 3, 4 AND 5

SEAL DIAPHRAGM PISTON UPPER CONTACT

TFP SWITCH 4 TFP SWITCH 1

DISK

TFP SWITCH 3

TFP SWITCH 5

LOWER CONTACT

Seal

Body Upper Contact

Diaphragm

+

The transmission fluid pressure switches located in the control solenoid valve assembly are normally-closed. When closed, these switches allow electric current to flow through the switch.

Disk

Piston

Lower Contact

Ground Fluid Pressure Switch Operation:

The fluid pressure switches are normally closed (contacts touching) when no fluid pressure is present, thereby allowing electrical current to flow through the switch. When fluid pressure is routed to the switch, the fluid pressure moves the diaphragm, piston and disk such that the circuit opens (no current flow).

NO PRESSURE

Body

Fluid

Seal

Upper Contact

Diaphragm TFP switch 1 sends a signal to the TCM to indicate the state of the 3-5 and reverse clutch regulator valve. TFP switch 3 sends a signal to the TCM to indicate the state of the 2-6 clutch regulator valve.

+ Disk

Lower Piston Contact PRESSURIZED

TFP switch 4 sends a signal to the TCM to indicate the state of the 1-2-3-4 clutch regulator valve.

Ground

TFP switch 5 sends a signal to the TCM to indicate the state of the CBR1 / 4-5-6 clutch regulator valve.

Fluid Pressure Switch Logic

Gear Selector Position Switch 1 Switch 3 Switch 4 Switch 5 Park 1 0 0 0 Reverse 0 0 0 0 Neutral 1 0 0 0 Drive 1 Engine Braking 1 1 0 0 Drive 1 1 1 0 1 Drive 2 1 0 0 1 Drive 3 0 1 0 1 Drive 4 1 1 0 0 Drive 5 0 1 1 0 Drive 6 1 0 1 0 1 = Pressurized 0 = Exhausted

The transmission fluid pressure switches are part of the control solenoid (w/body and TCM) valve assembly and are not serviced separately.

Figure 39

43

ELECTRICAL COMPONENTS SHIFT SOLENOIDS

The Hydra-matic 6 Speed RWD uses two electromagnetic shift solenoids (1 and 2) to control the two clutch select valves 2 and 3. The shift solenoids are part of the control solenoid (w/body and TCM) valve assembly and are not serviced separately.

PLUNGER AND METERING BALL ASSEMBLY

SS 1 ON ON ON ON OFF OFF OFF OFF OFF OFF

CONNECTOR

SUPPLY PRESSURE (ACTUATOR FEED LIMIT)

The shift solenoids are identical, normally-closed, 3-port, ON/ OFF type solenoids controlled by the TCM. These shift solenoid work in combination with the pressure control solenoids to control the various shift and clutch regulator valves. The TCM uses numerous inputs (as shown in Figure 35) to determine which solenoid state combination the transmission should be in. The following table shows the solenoid state combination required for each gear range: Gear Park Reverse Neutral Drive 1 Engine Braking Drive 1 Drive 2 Drive 3 Drive 4 Drive 5 Drive 6

COIL ASSEMBLY

EXHAUST

CONTROL PRESSURE

SS 2 ON OFF ON ON ON ON ON ON ON ON

HOUSING

SPRING

NORMALLY-CLOSED ON/OFF SOLENOID

Shift Solenoid (SS) 2:

When the TCM provides a path to ground for the electrical circuit to energize (turn ON) the solenoid, current flows through the coil assembly in the solenoid and creates a magnetic field. The magnetic field moves the plunger and metering ball assembly to the right (with respect to the illustration) against the exhaust seat, thereby blocking the exhaust passage and creating signal fluid pressure.

Actuator feed limit fluid feeds the shift solenoid 2 fluid circuit to control the clutch select valve 3. When the SS 2 valve is energized (ON), actuator feed limit fluid is allowed to pass through the solenoid, thereby creating solenoid 2 fluid pressure (see example). Solenoid 2 fluid pressure acts against the clutch select valve 3 spring force to move the valve to the apply position.

The shift solenoids are de-energized (turned OFF) when the TCM opens the path to ground for the solenoid’s electrical circuit. With the solenoid OFF, solenoid spring force moves the plunger and metering ball assembly away from the exhaust seat and against the feed seat. This blocks actuator feed limit fluid from entering the signal fluid circuit and allows any existing signal fluid pressure to flow past the metering ball and exhaust out of the solenoid as shown in the illustration.

When the SS 2 is de-energized (OFF), actuator feed limit fluid is blocked from feeding the solenoid 2 fluid circuit, and any existing solenoid 2 fluid pressure exhausts through the solenoid.

CSV2 ENABLE

35 REV CL

EX

DRIVE EX

SOL 1

22

CLUTCH SELECT VALVE 2

EX

OFF

EX

N.C. SHIFT SOL 1

DRIVE

Actuator feed limit fluid feeds the shift solenoid 1 fluid circuit to control the clutch select valve 2. When the SS 1 is energized (ON), actuator feed limit fluid is allowed to pass through the solenoid, thereby creating solenoid 1 fluid pressure (see example). Solenoid 1 fluid pressure acts against the clutch select valve 2 spring force to move the valve to the apply position.

#2

ACT FD LIM

Shift Solenoid (SS) 1:

REVERSE SOL 1

DRIVE 1-6 CSV2 LATCH CBR1/456 CL FD

When the SS 1 is de-energized (OFF), actuator feed limit fluid is blocked from feeding the solenoid 1 fluid circuit, and any existing solenoid 1 fluid pressure exhausts through the solenoid.

CBR1/CBR FD 21

1234 CL DFLT 1234 CL DFLT FD

EX

REVERSE 456 CL FD

DRIVE BRAKE DRV B EX

REVERSE

CBR1/CBR FD

CLUTCH SELECT VALVE 3

35 CL REV FD N.C. SHIFT SOL 2

CBR 35 CL REV FD

#3

ON

SOL 2

44

Figure 40

456 CL

ACT FD LIM

CSV3 ENABLE

20

456 CL

SOL 2

ELECTRICAL COMPONENTS Torque Converter Clutch Pressure Control (TCC PC) Solenoid:

The TCC PC solenoid is a normally-low, precision electronic pressure regulator used to control the apply and release of the converter clutch based on current flow through its coil windings. The TCC PC solenoid is located in the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The TCC PC solenoid regulates actuator feed limit fluid pressure to the TCC regulator valve located in the lower valve body and provides a signal pressure to shift the TCC control valve, located in the pump, to the apply position. When the TCM determines to apply the TCC, the TCC PC solenoid is commanded to specific pressures, dependent on vehicle operating conditions, resulting in a smooth apply or release of the TCC. The solenoid’s ability to “ramp” the TCC apply and release pressures results in a smoother TCC operation.

CONTROL PRESSURE SUPPLY PRESSURE (ACTUATOR FEED LIMIT)

CLOSED END FEATURE

When vehicle operating conditions are appropriate to apply the TCC, the TCM increases the current flow to allow the TCC PC solenoid to direct PCS TCC fluid pressure to move the TCC control valve to the apply position and move the TCC regulator valve to the regulating position to regulate fluid pressure proportional to TCC PC solenoid pressure. Release pressure is directed to exhaust, and regulated apply fluid is directed to the apply side of the converter pressure plate/damper assembly. The TCM then increases the pressure to control a slippage of 20–80 RPM between the pressure plate/damper assembly and the converter cover. This provides for improved dampening of engine vibrations and allows the TCC to apply at low engine speeds in 2nd, 3rd, 4th, 5th and 6th gear. The TCC PC solenoid is commanded to maximum pressure to fully apply the pressure plate/damper assembly.

COIL ASSEMBLY

HOUSING

EXHAUST

O-RING

VARIABLE RESTRICTION CONNECTOR

NORMALLY-LOW PRESSURE CONTROL SOLENOID

There are also some operating conditions that may prevent or enable TCC apply such as: engine temperature, transmission temperature, brake switch activation. The TCC PC solenoid is the only electronic control component of the TCC apply and release system. Other components are hydraulic control or regulating valves. The illustration below shows the valves and the TCC PC solenoid that comprise the TCC control system. (For more information on TCC system operation see page 14 & 15).

Release of the TCC is achieved by decreasing TCC PC solenoid pressure to a level low enough to allow spring force to move the TCC control valve and the TCC regulator valve to the release position. TCC apply fluid is then directed to the cooler and converter feed limit fluid is directed into the release circuit, to the release side of the pressure plate/damper assembly. This fluid then flows into the apply side of the pressure plate/damper assembly and out of the converter through the apply circuit to the TCC control valve.

ACT FD LIM

If the TCM detects that the TCC system is stuck ON or stuck OFF, a DTC will be activated.

DRIVE 1-6 9

PCS TCC

SHTL

SOL 1

TCC REGULATOR VALVE 11

REG APP

COOLER FD TCC APPLY

PCS TCC

ON

10 TCC CONTROL VALVE

➤

TCC REL

N.L.

EX

7

EXH

TCC PRESSURE CONTROL SOLENOID

EX REG APP

CONV FD LIMIT

ACT FD LIM

REG APP PCS TCC

Figure 41

45

ELECTRICAL COMPONENTS Line Pressure Control (PC) Solenoid:

The line pressure control (PC) solenoid is part of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The line PC solenoid is a precision electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. The TCM varies current to the normally-high line PC solenoid from approximately 0.1 amp for maximum line pressure, to 1.0 amps for minimum line pressure. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s variable restriction further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the PC solenoid, which ultimately decreases line pressure. As current flow is decreased, the reduced magnetic field produced by the coil moves the solenoid's variable restriction closer to the exhaust port, increasing the output fluid pressure regulated by the PC solenoid valve, which ultimately increases line pressure. The TCM controls the line PC solenoid based on various inputs, including throttle position, transmission fluid temperature and gear state.

CONTROL PRESSURE SUPPLY PRESSURE (ACTUATOR FEED LIMIT)

O-RING

VARIABLE RESTRICTION

SPRING CONNECTOR

NORMALLY-HIGH PRESSURE CONTROL SOLENOID

If the TCM detects a pressure control solenoid valve electrical malfunction, a DTC will be activated.

LINE 3

LINE PCS LINE

2A

EX ACT FD LIM

PRESSURE REGULATOR VALVE ISOLATOR

DECREASE

2

HOUSING

EXHAUST

CLOSED END FEATURE

The current flow to the line PC solenoid is primarily affected by throttle position (engine torque), and is also inversely proportional to throttle position (engine torque). In other words, as the throttle position (engine torque) increases, the current flow is decreased by the TCM, which increases the pressure output of the line PC solenoid.

CONV FD

COIL ASSEMBLY

ACT FD LIM PCS LINE 5 LINE PRESSURE CONTROL SOLENOID

N.H.

46

Figure 42

PCS LINE

ELECTRICAL COMPONENTS Clutch Pressure Control (PC) Solenoids 2, 3, 4 & 5:

The clutch pressure control (PC) solenoids 2 and 3 are normally-high PC solenoids and are identical to the line PC solenoid (page 46). The clutch PC solenoids 4 and 5 are normallylow and are the same as the TCC PC solenoid (page 45). The clutch PC solenoid 2 controls fluid flow to the 3-5 and reverse clutch regulator and 3-5 and reverse clutch boost valves. When commanded, the PC solenoid controls the flow of exhaust fluid out of the solenoid to maintain a specific commanded control pressure. This allows the TCM to control the apply and release of the 3-5 and reverse clutch. The clutch PC solenoid 3 controls fluid flow to the 4-5-6 clutch regulator and 4-5-6 clutch boost valves. When commanded, the PC solenoid controls the flow of exhaust fluid out of the solenoid to maintain a specific commanded control pressure. This allows the TCM to control the apply and release of the 4-5-6 clutch. The clutch PC solenoid 4 controls fluid flow to the 2-6 clutch regulator valve. When commanded, the PC solenoid controls the flow of exhaust fluid out of the solenoid to maintain a specific commanded control pressure. This allows the TCM to control the apply and release of the 2-6 clutch. The clutch PC solenoid 5 controls fluid flow to the 1-2-3-4 clutch regulator and 1-2-3-4 clutch boost valves. When commanded, the PC solenoid controls the flow of exhaust fluid out of the solenoid to maintain a specific commanded control pressure. This allows the TCM to control the apply and release of the 1-2-3-4 clutch.

CONTROL PRESSURE SUPPLY PRESSURE (ACTUATOR FEED LIMIT)

COIL ASSEMBLY

HOUSING

EXHAUST

CONNECTOR CLOSED END FEATURE

O-RING

VARIABLE RESTRICTION

NORMALLY-LOW PRESSURE CONTROL SOLENOID CONTROL PRESSURE SUPPLY PRESSURE (ACTUATOR FEED LIMIT)

COIL ASSEMBLY

HOUSING

EXHAUST

CONNECTOR CLOSED END FEATURE

O-RING

VARIABLE RESTRICTION

SPRING

NORMALLY-HIGH PRESSURE CONTROL SOLENOID

Clutch Pressure Control (PC) Solenoid Logic 38

CBR1/C456 CL REG VALVE 39

PCS CBR1/456 CL

N.H. ON

31

EX EX

40

35 REV CL FDBK PS1 35 REV CL

EX

PCS 35 REV CL

N.L. OFF

EX BF

36

35

1234 CL

1-2-3-4 CL REGULATOR VALVE 34

33

26 CL

EX

EX

1234 CL FD

EX BACKFILL C1234 PRESSURE CONTROL SOLENOID 5

50

1234 CL FDBK

SHTL

PCS 1234 CL

EX

29

41

26 CL

2-6 GAIN

ACT FD LIM

1234 CL BOOST VALVE

26 CL/1234 CL FD

PS3 EX

44

PCS 26 CL

1234 CL

N.H. OFF

2-6 CLUTCH REG

EX BF 26 CL

CB26 PRESSURE CONTROL SOLENOID 4

ACT FD LIM

ACT FD LIM

C35R PRESSURE CONTROL SOLENOID 2

46

47

35R FD ACT FD LIM

ACT FD LIM

3-5 REV CL REGULATOR VALVE 48

PS4 EX

43

CBR1/456 CL FD

35R CL BOOST VALVE

ACT FD LIM

42

37

CBR1 FDBK

456 CL BOOST VALVE

456 CL ACT FD LIM

EX

ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

Transmission Adapt Function:

Programming within the TCM also allows for automatic adjustments in shift pressure that are based on the changing characteristics of the transmission components. As the apply components within the transmission wear or change over time, shift time (the time required to apply a clutch) increases or decreases. In order to compensate for these changes, the TCM adjusts the pressure commands to the various PC solenoids, to maintain the originally calibrated shift timing. The automatic adjusting process is referred to as “adaptive learning” and it is used to ensure consistent shift feel plus increase transmission durability. The TCM monitors the A/T ISS and the A/T OSS during commanded shifts to determine if a shift is occurring too fast (harsh) or too slow (soft) and adjusts the corresponding PC solenoid signal to maintain the set shift feel.

PS5

LINE DRIVE 1-6

EX EX BF CBR1/456 CL FD

PC Sol 5 PC Sol 4 PC Sol 2 PC Sol 3 Gear N.L. N.L N.H. N.H. Park OFF OFF OFF ON Reverse OFF OFF ON ON Neutral OFF OFF OFF ON Drive 1 Engine Braking ON OFF OFF ON Drive 1 ON OFF OFF OFF Drive 2 ON ON OFF OFF Drive 3 ON OFF ON OFF Drive 4 ON OFF OFF ON Drive 5 OFF OFF ON ON Drive 6 OFF ON OFF ON

1234 CL DFLT PCS 1234 CL

N.L. OFF

Figure 43

47

ELECTRICAL COMPONENTS COMPONENTS EXTERNAL TO THE TRANSMISSION Throttle Position (TP) Sensor: The ECM monitors the variable voltage signal from the TP sensor to calculate throttle position (angle). These input signals are then transmitted over the CAN bus to the TCM, in addition to other vehicle and transmission sensor inputs, in order to determine the appropriate line pressure, shift pattern and TCC apply and release for the transmission. In general, with greater throttle angle, upshift speeds and line pressure both increase.

Engine Speed Sensor: Monitored by the ECM through the ignition module, information from this sensor is transmitted over the CAN bus to the TCM and used to help determine shift patterns and TCC apply and release.

Manifold Absolute Pressure (MAP) Sensor: The MAP sensor measures changes relative to intake manifold pressure which results from changes in engine load and speed. These changes are converted to a voltage output which is monitored by the ECM and transmitted over the CAN bus to the TCM in order to adjust line pressure and shift timing.

Engine Coolant Temperature (ECT) Sensor: The ECM monitors the variable resistance signal from this sensor to determine engine coolant temperature. When the engine is cold, resistance is high, and when the engine is hot, resistance through the sensor is low. The ECM then transmits this information over the CAN bus to the TCM where it is used to prevent the TCC from applying when engine temperature is below approximately 20°C (68°F) (calibratable).

Manifold Air Temperature (MAT) Sensor: The ECM monitors the variable resistance signal from the MAT sensor to determine manifold air temperature. When the air is cold, resistance is high, and when the air is hot, resistance through the sensor is low. The ECM then transmits this information over the CAN bus to the TCM where it is used as a factor to determine TCC apply.

Accelerator Pedal Position (APP) Sensor: The APP sensor is monitored by the ECM in order to determine accelerator pedal position. The ECM uses this signal to open and close the throttle in response to the driver's commands. It also signals the TCM when the accelerator pedal is fully depressed, allowing forced downshifts and maximum performance.

48

Brake Switch: This parameter displays the state of the brake switch circuit input. This information is transmitted to the TCM where it is used as a factor to determine the apply or release state of the TCC. The scan tool will display Applied when the brake pedal is depressed and Released when the brake pedal is released.

Driver Shift Control (DSC) Switches: These switches are located either on the steering wheel or on a secondary gate within the console shift lever mechanism. The TCM uses the switch inputs to provide manual shift control to the driver. When a switch is depressed, the TCM opens a path to ground causing the transmission to shift up or down.

Operating Mode Selection Switches: Depending on the customer/ application, vehicles may be equipped with switches allowing the driver to select various automatic operating modes (Economy, Performance, Winter), or manual mode (Driver Shift Control) to allow manual shifting by bumping the selector lever up and down.

Diagnostic Link Connector (DLC): The DLC is a multi-terminal connector that is located under the vehicle dashboard. The DLC is connected by serial data wires to the various control modules located throughout the vehicle. The DLC can be used to diagnose conditions in the vehicle's electrical system, TCM or PCM, and various transmission components. Refer to the appropriate Service Manual for specific electrical diagnosis information.

Controller Area Network (CAN) Bus: The CAN bus consists of two wires that connect the various vehicle control modules together, allowing them to exchange information about vehicle conditions.

Note: These are typical inputs to the controllers. The combination and usage of these inputs may vary depending on model and application.

POWER FLOW This section of the book describes how torque from the engine is transferred through the Hydra-matic 6 Speed RWD transmission allowing the vehicle to move either in a forward or reverse direction. The information that follows details the specific mechanical operation, electrical, hydraulic and apply components that are required to achieve a gear operating range.

The full size, right hand pages contain a simplified version of the Complete Hydraulic Circuit that is involved for that range and gear. Facing this full page is a half page insert containing text and a detailed explanation of what is occurring hydraulically in that range and gear. A page number located at the bottom of the half page of text provides a ready reference to the complete Hydraulic Circuits section of this book if more detailed information is desired.

The full size, left hand pages throughout this section contain drawings of the mechanical components used in a specific range and gear. Facing this full page is a half page insert containing a color coded range reference chart at the top. This chart is one of the key items used to understand the mechanical operation of the transmission in each range and gear. The text below this chart provides a detailed explanation of what is occurring mechanically in that range and gear.

It is the intent of this section to provide an overall simplified explanation of the mechanical, hydraulic and electrical operation of the Hydra-matic 6 Speed RWD transmission. If the operating principle of a clutch, or valve is unclear, refer to the previous sections of this book for individual component descriptions.

RK g) PA nnin Ru

e gin

(En

) k (P Par he oil in t the ver fromwing: le r e o r o lect essu e foll e se e pr o th Reg- 1-2-3-4 h th lin d t 18): ) Witsition, irecte alve(2ressure CLUTCH po p is d lator V(line psion u t pum re Regoutpuansmmis p

PARK (Engine Running) 1 POWER FROM TORQUE CONVERTER (1)

2 POWERFLOW TERMINATED

4 LOW AND REVERSE CLUTCH APPLIED*

3 VEHICLE HELD STATIONARY (NO POWER TRANSMITTED TO OR FROM DIFFERENTIAL ASSEMBLY)

OUTPUT SHAFT ASSEMBLY (70) HELD

➤

ssu mp tr pu Pretes pu to the hen emand ulaordingents. Wthe dfrom accuirem ceeds, fluidr q re ut ex ssure ulato outpne preure reg of lipress the

➤

➤

➤

PARK (Engine Running) 3-5 REVERSE CLUTCH

CENTER SUPPORT ASSEMBLY

2-6 CLUTCH ASSEMBLY

4-5-6 CLUTCH ASSEMBLY

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

1234 CLUTCH 35 REV CLUTCH COMP FEED 456 CLUTCH M

D N R

P

EX LINE

REVERSE

LINE

DRIVE

CBR CBR 1

➤

➤ ➤

DRIVE

MANUAL VALVE

LINE

CONTROL SOLENOID VALVE ASSEMBLY

1 ACT FD LIM

3a N.C.

SOL 1

SOL 1

35 REV CL

EX

DRIVE EX

EX

DRIVE

LINE

CBR CBR 1

1234 CL DFLT FD

CBR1/CBR FD

1234 CL DFLT 1234 CL DFLT FD

EX

REVERSE 456 CL FD

REVERSE

DRIVE BRAKE DRV B EX

CBR SOL 1

456 CL

CSV3 ENABLE

PS3 EX

REG APPLY

DRIVE EX

10

SOL 1

EX

11

EX

35R FD ACT FD LIM

46

47

48

REG APPLY

SOL 1

1234 CL

EX 36

35

34

33

1234 CL FD

EX BACKFILL

EX

1-2-3-4 CL REGULATOR VALVE

PS4 EX

SHTL

50

COMPENSATOR FD REG VALVE

1234 CL FDBK

1234 CL DFLT 14

PCS 1234 CL

COMP FD

13

LINE

PCS 35 REV CL

9

TCC REGULATOR VALVE SHTL

PCS 1234 CL

UIT

PCS TCC

3b 45

EX BF

LINE

EX

COMP FD

35 REV CL

3-5 REV CL REGULATOR VALVE

ACT FD LIM

ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

SOL 2

35 REV CL FDBK

4b

ACT FD LIM

ACT FD LIM

PA AUL GE IC 86 CIR C

26 CL

EX BF

SOL 2

COMP FD

50 B

#3

35 CL REV FD

35 CL REV FD

SOL 2

PCS 35 REV CL

N.H. OFF

20

4c

SOL 2

N.H.

4d

CBR

ON

C35R PRESSURE CONTROL SOLENOID 2

21

CLUTCH SELECT VALVE 3

456 CL 51

PS1

N.C.

PARK PAWL (502) ENGAGED

41

EX

1 SHIFT SOL 2

CO PARK MP PAWL LE ACTUATOR TE HY ASSEMBLY DR (503)

EX

SOL 1

EX N.C.

4a

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

EX BF 26 CL

PCS 26 CL

PS1

LINE PRESSURE CONTROL SOLENOID

INPUT SUN GEAR (53)

2-6 GAIN

49

26 CL/1234 CL FD

43

2-6 CLUTCH REG 44

PCS LINE

5

DRIVE CBR1/CBR FD

456 CL 42

PCS 26 CL

N.L. OFF

ACT FD LIM

OUTPUT SHAFT ASSEMBLY (70) HELD

LINE

ACT FD LIM CB26 PRESSURE CONTROL SOLENOID 4

COMP FD

2a LINE 2A

EX

PCS LINE

LOW AND REV CLUTCH APPLIED*

3

ISOLATOR

DECREASE

2

CBR1/456 CL FD

EX BACKFILL

LINE

LINE

CONV FD

PRESSURE REGULATOR VALVE

INPUT CARRIER ASSEMBLY (52)

CSV2 LATCH

30

22

CLUTCH SELECT VALVE 2

LINE EXHAUST BACKFILL PRESSURE RELIEF VALVE

N.H. ON 26

3c

DRIVE 1-6

CBR1/456 CL FD

LINE

CBR1/C456 PRESSURE CONTROL SOLENOID 3

LINE

ACT FEED LIMIT VALVE

PS5

EX

EX EX BF CBR1/456 CL FD

12

3d

CBR1/CBR FD

ACT FD LIM

37

CBR1 FDBK

31

456 CL BOOST VALVE

EX

LINE

PCS CBR1/456 CL

TORQUE CONVERTER (WITH FLUID PUMP) HOUSING ASSEMBLY (2)

ACT FD LIM

ACT FD LIM

LINE

38

39

TORQUE CONVERTER ASSEMBLY (1)

DRIVE 1-6

CBR1/C456 CL REG VALVE

N.L. OFF

PCS TCC

SOL 1

#2

2b

TCC PRESSURE CONTROL SOLENOID

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

CSV2 ENABLE

REVERSE SOL 1

COMP FD

ON

ACT FD LIM

SHIFT SOL 1

COMP FD

PCS 1234 CL

N.L. OFF

LINE

LINE

* APPLIED BUT CARRYING NO LOAD

50

Figure 46

Figure 45

Figure 44

51

49

MECHANICAL POWERFLOW FROM THE TORQUE CONVERTER TO THE TURBINE SHAFT 2a (Engine Running)

1 POWER FROM THE ENGINE

2 POWER TO DRIVE FLUID PUMP

FLUID PUMP ROTOR (217) DRIVEN

MECHANICAL POWERFLOW FROM THE TORQUE CONVERTER TO THE TURBINE SHAFT (Engine Running) The mechanical power flow in the Hydra-matic transmission begins at the point of connection between the torque converter and the engine flywheel. When the engine is running, the torque converter cover (pump) is forced to rotate at engine speed. As the torque converter rotates it multiplies engine torque and transmits it to the turbine shaft (56). The turbine shaft provides the primary link to the mechanical operation of the transmission. The Hydra-matic 6 Speed RWD automatic transmission requires a constant supply of pressurized fluid to cool and lubricate all of the components throughout the unit. It also requires a holding force to be applied to the clutches during the various gear range operations. The torque converter (w/ fluid pump) housing assembly (2) and the control valve body assembly (21) provide for the pressurization and distribution of fluid throughout the transmission. 1 Power from the Engine

Torque from the engine is transferred to the transmission through the engine flywheel which is bolted to the engine crankshaft. 2 Power to Drive the Fluid Pump

The fluid pump rotor (217) is keyed to the torque converter hub. Therefore, the fluid pump rotor also rotates at engine speed. 3 Fluid Coupling Drives the Turbine

Transmission fluid inside the torque converter (1) creates a fluid coupling which in turn drives the torque converter turbine. 4 Turbine Shaft Driven

3 FLUID COUPLING DRIVES THE TURBINE

As the torque converter turbine rotates, the turbine shaft (56), which is splined to the torque converter turbine, is also forced to rotate at turbine speed.

4 TURBINE SHAFT DRIVEN

TORQUE CONVERTER ASSEMBLY (1)

NOTE: To minimize the amount of repetitive text, the remaining mechanical power flow descriptions will begin with the turbine shaft (56). The transfer of torque from the engine through the torque converter to the turbine shaft is identical in all gear ranges except when the torque converter clutch is applied (see pages 14 and 15 for complete explanation of torque converter apply.

SPLINED TO TORQUE CONVERTER STATOR ASSEMBLY

SPLINED TO TORQUE CONVERTER TURBINE ASSEMBLY

4-5-6 CLUTCH ASSEMBLY (TURBINE SHAFT) (56)

KEYED TO FLUID PUMP ROTOR

50

Figure 45

TORQUE CONVERTER (WITH FLUID PUMP) HOUSING ASSEMBLY (2)

50A

HYDRAULIC POWERFLOW – COMMON FUNCTIONS FOR ALL RANGES (Engine Running)

COMMON HYDRAULIC FUNCTIONS FOR ALL RANGES 3 TORQUE

1 PRESSURE

CONVERTER

REGULATION

3c

LINE

1 PRESSURE REGULATION

LINE

1a Pressure Regulator Valve:

Regulates pump output (line pressure) in response to pressure control solenoid line fluid acting on the pressure regulator isolator valve, spring force and line pressure acting on the end of the valve. Line pressure is directed to the pressure relief valve, manual valve, actuator feed limit valve, CBR1/ C456 clutch regulator valve and the compensator feed regulator valve. Line pressure is also routed through the pressure regulator valve and into the converter feed fluid circuit. Converter feed fluid is routed to the converter feed limit valve.

1b N.C.

12

ACT FD LIM

PCS TCC

N.L. OFF

PCS CBR1/456 CL

PCS TCC

TCC APPLY TCC RELEASE

3a 6

ACT FD LIM

LINE

CBR1/C456 PRESSURE CONTROL SOLENOID 3

2

3. TORQUE CONVERTER (RELEASED POSITION ONLY) 7

EX

PCS LINE

PCS LINE 5

N.C. SHIFT SOL 2

Spring force holds the valve in the released position allowing converter feed limit fluid to enter the TCC release fluid circuit.

ON

TCC CONTROL VALVE

3b Torque Converter Clutch (TCC) control valve:

PCS 26 CL

N.L. OFF

TCC REL

COOLER FD TCC APPLY

ACT FD LIM CB26 PRESSURE CONTROL SOLENOID 4

EX

ISOLATOR

CONV FD LIMIT

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LINE 2A

3

3b

1c

SOL 2

ACT FD LIM

1

DECREASE

FRONT LUBE

LINE

TCC APPLY COOLER FEED TCC RELEASE

2a Compensator Feed Regulator Valve:

ACT FD LIM

REG APP PCS TCC

PCS LINE

CONV FD

2. CLUTCH COMPENSATORS:

N.H. ON

LINE 3

ACT FD LIM

1a

LINE

CONV FD LIMIT

PRESSURE REGULATOR VALVE

CONV FD LIMIT

Controlled by the TCM, the line pressure control solenoid regulates actuator feed limit fluid pressure into the pressure control solenoid line (PCS line) fluid circuit.

Converter feed fluid is routed through the valve and into the converter feed limit circuit. Spring force and converter feed fluid at the valve limits converter feed limit pressure to a specific maximum pressure as it is routed to the torque converter clutch control valve.

SOL 1

TCC PRESSURE CONTROL SOLENOID

1c Line Pressure Control Solenoid:

3a Converter Feed Limit Valve:

ON

LINE

ACT FD LIM

TORQUE CONVERTER ASSEMBLY

Line pressure at the actuator feed limit valve passes through the valve and into the actuator feed limit circuit where pressure is limited to a maximum specific value. Actuator feed limit fluid is then routed to shift solenoid 1, TCC pressure control solenoid, CBR1/C456 pressure control solenoid, CB26 pressure control solenoid, shift solenoid 2, line pressure control solenoid, C35R pressure control solenoid, C1234 pressure control solenoid and 3-5 clutch regulator valve.

ACT FEED LIMIT VALVE

SHIFT SOL 1

1b Actuator Feed Limit Valve:

Line pressure at the compensator feed regulator valve is routed through the valve and into the compensator feed fluid circuit. Compensator feed fluid routed to the end of the valve and spring force acting on the other end of the valve regulate compensator feed fluid pressure. Compensator feed fluid is then routed to the compensators of the 1-2-3-4 clutch, 3-5 Reverse clutch and 4-5-6- clutch assemblies.

ACT FD LIM

ACT FD LIM

LINE PRESSURE CONTROL SOLENOID

N.H.

3c Torque Converter:

2 COMPENSATION LINE C35R PRESSURE CONTROL SOLENOID 2

PCS 34 REV CL

FLUID PUMP

EX

COMP FD

13

LINE COMP FD

ACT FD LIM

N.H. OFF

COMPENSATOR FD REG VALVE

14

SUCTION

ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

FILTER

N.L. OFF

SUMP

50B

ACT FD LIM

2a EX

TCC release fluid is routed to the torque converter, keeping a constant flow of fluid through the converter to keep it cool. Fluid leaves the torque converter through the TCC apply circuit and passes through the TCC control valve into the cooler feed circuit. Cooler feed fluid is routed through the cooler and into the lube fluid circuit to provide lubrication throughout the transmission.

Figure 46

PCS 1234 CL

51

PARK

PARK (Engine Running)

(Engine Running)

1 POWER FROM TORQUE CONVERTER (1)

2 POWERFLOW TERMINATED

4 LOW AND REVERSE CLUTCH APPLIED*

3 VEHICLE HELD STATIONARY (NO POWER TRANSMITTED TO OR FROM DIFFERENTIAL ASSEMBLY)

OUTPUT SHAFT ASSEMBLY (70) HELD

➤

➤

➤

➤

➤

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH

LOW & REV. CLUTCH

LOW CLUTCH SPRAG

APPLIED* * Applied with no load

• The manual shift shaft (508) and the manual valve (354) are in the Park position. The park pawl actuator assembly (503) engages the park pawl (502) with the lugs on the output shaft assembly (70). • The output shaft assembly (70) is held stationary, preventing the vehicle from moving. 1

Power from Torque Converter

The power flows through the turbine shaft into the 4-5-6 clutch housing which contains the input internal gear. The input internal gear drives the input carrier pinion gears which rotate around the stationary input sun gear (53), thus driving the input carrier assembly (52) in reduction. The input carrier is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51), which is rotating in the same direction as the turbine shaft but in reduction.

➤

➤

1-2-3-4 CLUTCH

2

Powerflow Terminated

The 1-2-3-4 and 3-5 reverse clutch assembly and the 4-5-6 clutch assembly rotate freely. Without any clutches applied, powerflow is terminated.

TORQUE CONVERTER ASSEMBLY (1)

TORQUE CONVERTER (WITH FLUID PUMP) HOUSING ASSEMBLY (2)

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

3

With the park pawl engaged, the vehicle cannot move forward or backward. 4

Low and Reverse Clutch Applied/Preparation for a Shift

The low and reverse clutch is applied in Park in preparation for a shift into either 1st or reverse. This aids shift timing as only one clutch will need to be applied to achieve either range. The 6 Speed RWD is designed to have two components applied for each gear range, except drive range 1st gear without engine braking. Also, in each forward range, the design includes that only one component will need to be applied as another component releases.

INPUT CARRIER ASSEMBLY (52)

LOW AND REV CLUTCH APPLIED*

Vehicle Held Stationary

NOTE: The vehicle should be completely stopped before selecting Park range or internal damage to the transmission could occur. Also, the manual linkage must be adjusted properly so the indicator quadrants in the vehicle correspond with the manual shaft detent lever (505) in the transmission. If not adjusted properly, an internal leak between fluid passages at the manual valve may cause a clutch to slip or cause the transmission to not hold in park. Refer to the appropriate General Motors Service Manual for the proper manual linkage adjustment procedures.

OUTPUT SHAFT ASSEMBLY (70) HELD

PARK PAWL (502) ENGAGED

INPUT SUN GEAR (53) PARK PAWL ACTUATOR ASSEMBLY (503) 4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

* APPLIED BUT CARRYING NO LOAD

52

Figure 47

52A

PARK

PARK (Engine Running)

(Engine Running)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG ON

ON

OFF

OFF

OFF

ON

3-5 REVERSE CLUTCH

1-2-3-4 CLUTCH

CENTER SUPPORT ASSEMBLY

APPLIED*

*APPLIED WITH NO LOAD

2-6 CLUTCH ASSEMBLY

4-5-6 CLUTCH ASSEMBLY

FLUID PRESSURE DIRECTED IN PREPARATION FOR A SHIFT 1 Manual Valve:

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

1234 CLUTCH 35 REV CLUTCH COMP FEED

Mechanically controlled by the gear selector lever, the manual valve is in the Park (P) position and prevents line pressure from the pressure regulator valve from entering the reverse and drive circuits.

456 CLUTCH M

D N R

P

LINE

DRIVE

REVERSE

LINE

DRIVE

CBR CBR 1

The CBR1/C456 PCS is energized (HIGH) allowing actuator feed limit fluid to enter the PCS CBR1/C456 CL fluid circuit. PCS CBR1/C456 CL fluid is then routed through orifice #31 to the 4-5-6 clutch boost valve and through orifice #39 to the CBR1/ C456 clutch regulator valve.

EX

MANUAL VALVE

2a CBR1/C456 Pressure Control (PC) Solenoid 3: LINE

CONTROL SOLENOID VALVE ASSEMBLY

1 ACT FD LIM

2b CBR1/C456 Clutch Regulator Valve:

3a

PCS CBR1/C456 CL fluid at the CBR1/C4-5-6 clutch regulator valve moves the valve against CBR1/C4-5-6 clutch regulator spring force and CBR1/FDBK fluid. This allows line pressure to pass through the valve and enter the CBR1/456CL FD circuit. CBR1/456CL FD is then routed to Clutch Select Valve 2.

N.C.

4d Clutch Select Valve #3:

CSV3 enable fluid moves the clutch select valve 3 against clutch select valve 3 spring force. CBR fluid at the clutch select valve 3 passes through the valve and exhausts.

EX

35 REV CL

EX

DRIVE EX

EX

LINE

DRIVE

1234 CL DFLT FD

EX

EX

ACT FEED LIMIT VALVE

ACT FD LIM

PS5

CBR1/CBR FD

COMP FD

EX EX BF CBR1/456 CL FD

SOL 1 CBR CBR 1

CBR1/CBR FD

PS1

CBR1/CBR FD

1234 CL DFLT 1234 CL DFLT FD

EX

REVERSE 456 CL FD

DRIVE BRAKE DRV B EX

REVERSE

CBR

SOL 2

3-5 REV CL REGULATOR VALVE

REG APPLY

EX

REG APPLY

SOL 1

1234 CL EX

ACT FD LIM

10

SOL 1

11

EX

46

47

48

35

34

33

1234 CL FD

EX BACKFILL

EX

1-2-3-4 CL REGULATOR VALVE 50

COMPENSATOR FD REG VALVE

1234 CL FDBK

1234 CL DFLT 14

PCS 1234 CL

COMP FD

13

LINE

PCS 1234 CL

COMP FD

SHTL 36

PS4 EX

ACT FD LIM PCS 35 REV CL

9

TCC REGULATOR VALVE SHTL

PCS 35 REV CL

ACT FD LIM

PCS TCC

3b 45

35R FD ACT FD LIM

LINE

N.H.

EX

COMP FD

PCS LINE

LINE PRESSURE CONTROL SOLENOID

35 REV CL

DRIVE

4b

SOL 2

35 REV CL FDBK

SOL 2

ACT FD LIM

456 CL

CSV3 ENABLE

4c

SOL 2

EX

ON

C1234 PRESSURE CONTROL SOLENOID 5

#3

35 CL REV FD

35 CL REV FD

EX BF

SHIFT SOL 2

N.H. OFF

26 CL

CBR 51

N.C.

C35R PRESSURE CONTROL SOLENOID 2

20

EX

1

CLUTCH SELECT VALVE 3

SOL 1

N.C.

21

4d

456 CL

ACT FD LIM

PS1

4a

41

PS3 EX

2-6 GAIN

PCS 26 CL PCS LINE

EX BF 26 CL

2-6 CLUTCH REG 44

49

26 CL/1234 CL FD

43

PCS 26 CL

N.L. OFF

5

DRIVE

456 CL 42

EX BF

2A

CB26 PRESSURE CONTROL SOLENOID 4

LINE

ACT FD LIM

LINE

Actuator feed limit fluid is routed through the valve and into the PS1 fluid passage. PS1 fluid is then sent to the normally closed #1 pressure switch and opens the switch. Solenoid 2 fluid seats the #3 ball check valve against 456 CL fluid passage and fluid is forced through orifice #20 into the CSV3 enable fluid circuit. CSV3 enable fluid is then routed to the clutch select valve 3.

LINE

COMP FD

2a LINE

PRESSURE REGULATOR VALVE

DECREASE

LINE 3

EX

DRIVE 1-6

CBR1/456 CL FD

30

22

EX BACKFILL

ISOLATOR

2

3c CLUTCH SELECT VALVE 2

CBR1/456 CL FD

EXHAUST BACKFILL PRESSURE RELIEF VALVE

26

CONV FD

3d

CSV2 LATCH

LINE

4b 3-5 Reverse Clutch Regulator Valve:

4c #3 Ball Check Valve:

31

N.H. ON

LINE

3d Clutch Select Valve 2:

Shift solenoid 2 is energized (ON) allowing actuator feed limit fluid to enter the solenoid 2 fluid circuit and is then routed to the #3 ball check valve.

12

456 CL BOOST VALVE

CBR1/C456 PRESSURE CONTROL SOLENOID 3

Solenoid 1 fluid seats the #2 ball check valve against the reverse fluid passage and fluid is forced through orifice #22 into the CSV2 enable fluid circuit.

37

CBR1 FDBK

EX

ACT FD LIM

3c #2 Ball Check Valve:

4a Shift Solenoid 2:

PCS CBR1/456 CL

LINE

N.L. OFF

PCS TCC

DRIVE 1-6

CBR1/C456 CL REG VALVE 39

Solenoid 1 fluid is routed to the TCC regulator valve and shuttle valve and moves the valve against TCC regulator valve spring force.

CSV2 enable fluid is routed to the clutch select valve 2 and moves the valve against clutch select valve 2 spring force. This allows CBR1/456 CL FD fluid to pass through the valve and enter the CBR1/CBR FD circuit. CBR1/CBR FD fluid is then routed: to clutch select valve 3, into the CBR1 fluid circuit and, through orifice #49 where it enters the CBR fluid circuit and an exhaust passage at the clutch select valve 3 (this fluid is intended to keep the low and reverse clutch full of fluid but not pressurized). CBR1 fluid is then routed to the low & reverse clutch assembly in preparation for a shift into low or reverse gear.

38

TCC PRESSURE CONTROL SOLENOID

3b TCC Regulator Valve and Shuttle Valve:

SOL 1

#2

2b LINE

3a Shift Solenoid 1:

Shift solenoid 1 is energized (ON) allowing actuator feed limit fluid to enter the solenoid 1 circuit. Solenoid 1 fluid is routed to the #2 ball check valve and through orifice #10 to the TCC regulator valve and shuttle valve (SHTL).

SOL 1

SOL 1

CSV2 ENABLE

REVERSE SOL 1 ACT FD LIM

ON

ACT FD LIM

SHIFT SOL 1

COMP FD

PCS 1234 CL

N.L. OFF

LINE

LINE

Note: Refer to Shift Solenoid and Pressure Control Solenoid information on pages 44 & 47 for a description solenoid operation.

52B

COMPLETE HYDRAULIC CIRCUIT Page 76

Figure 48

53

REVERSE 2 INPUT INTERNAL GEAR DRIVING

2a INPUT CARRIER ASSEMBLY (52) DRIVEN

➤

7 OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

➤

➤

4 OUTPUT CARRIER FRONT SUN GEAR (487) DRIVING

POWER TO DIFFERENTIAL ASSEMBLY

➤

➤

➤

➤

➤

1-2-3-4 CLUTCH

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH APPLIED

LOW & REV. CLUTCH

LOW CLUTCH SPRAG

APPLIED

In Reverse (R), torque from the engine is multiplied through the torque converter and transmission gearsets to the vehicle’s drive shaft and rear axle. The planetary gearset operates in reduction and also reverses the direction of input torque for a reverse gear ratio of approximately 3.064:1. • The manual shift shaft (508) and the manual valve (354) are in the Reverse position. 1

➤

➤ ➤

➤

➤

6 OUTPUT CARRIER ASSEMBLY (68) HELD

➤ ➤

➤

5 LOW AND REVERSE CLUTCH APPLIED

3 3-5 REVERSE CLUTCH APPLIED

➤

1 POWER FROM TORQUE CONVERTER (1)

REVERSE

Power from Torque Converter

The turbine shaft with the 4-5-6 clutch assembly (56) is driven by the converter turbine.

➤

2/2a Input Internal Gear Driving/ 2a Input Carrier Driven

The power flows through the turbine shaft into the 4-5-6 clutch housing which contains the input internal gear. The input internal gear drives the input carrier pinion gears which rotate around the stationary input sun gear (53) thus driving the input carrier assembly (52) in reduction. The input carrier is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51), which is rotating in the same direction as the turbine shaft but in reduction.

INPUT INTERNAL GEAR DRIVING 1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

3-5 REVERSE CLUTCH APPLIED

INPUT CARRIER ASSEMBLY (52) DRIVEN

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

2-6 AND 3-5 REVERSE CLUTCH HUB ASSEMBLY (64)

3

3-5 Reverse Clutch Applied

The 3-5 reverse clutch plates (402-403) are applied and hold the 2-6 and 3-5 reverse clutch hub assembly (64), which drives the output carrier front sun gear (487). 4

Output Carrier Front Sun Gear Driving

Engine torque is transferred from the 1-2-3-4 and 3-5 reverse clutch housing, through the output carrier front sun gear and to the front pinion gears. The pinion gears are in mesh with and drive the output carrier front internal gear (495).

INPUT SUN GEAR (53) HELD

5

Low and Reverse Clutch Applied

The low and reverse clutch is applied and holds the low clutch sprag assembly (467) outer race which is splined to the output carrier assembly (68). 6

Output Carrier Assembly Held

With the low and reverse clutch holding the output carrier assembly, the front pinion gears drive the output carrier internal front gear in a reverse direction. 7

CENTER SUPPORT ASSEMBLY (67)

LOW AND REVERSE CLUTCH APPLIED

Output Carrier Internal Front Gear Driven

The output carrier internal front gear is splined to the output shaft assembly (70), thus the output shaft is also driven in a reverse direction.

OUTPUT CARRIER ASSEMBLY (68) HELD

OUTPUT SHAFT ASSEMBLY (70) DRIVEN

When the throttle is released in Reverse, power from the vehicle (output shaft) drives through the output carrier and input carrier faster than engine speed is driving the turbine shaft. The engine then works as a brake, slowing the transmission down to input speed. This is referred to as engine braking.

OUTPUT CARRIER FRONT SUN GEAR (487) DRIVING

54

Figure 49

54A

REVERSE

REVERSE SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

3-5 REVERSE CLUTCH

1-2-3-4 CLUTCH

APPLIED

When the gear selector lever is moved to the Reverse (R) position (from the Park position) the normally high C35R pressure control solenoid 2 is commanded ON and the following changes occur in the transmission’s hydraulic and electrical systems:

4-5-6 CLUTCH ASSEMBLY

3d

COMPLETE HYDRAULIC CIRCUIT Page 78

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

1a M

COMP FD

D N R

P

SOL 1

TCC PRESSURE CONTROL SOLENOID

CSV2 ENABLE

DRIVE EX

EX

EX

DRIVE

35 REV CL

1c

REVERSE

EX

12

35 REV CL

456 CL BOOST VALVE

LINE

SOL 1

31

ACT FEED LIMIT VALVE

37

CBR1 FDBK

ACT FD LIM

PCS CBR1/456 CL

CBR CBR 1

35 REV CLUTCH

PS5

#2

CBR1/C456 CL REG VALVE

EX

LINE

ACT FD LIM

38

39

22

CLUTCH SELECT VALVE 2

2a SOL 1

CBR

41

26 CL

2-6 GAIN

PCS 26 CL

PS3 EX

44

ACT FD LIM

CBR1/CBR FD

26 CL/1234 CL FD

43

2-6 CLUTCH REG

EX

COMP FD

456 CL 42

CBR1/CBR FD 49

REVERSE 456 CL FD

EX BACKFILL

N.H. ON

DRIVE BRAKE DRV B EX

30

1234 CL DFLT FD

DRIVE BRAKE

REVERSE

26

35 REV CL

EXHAUST BACKFILL PRESSURE RELIEF VALVE

LINE

ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

CBR1/CBR FD

LINE

456 CL FD

CBR1/456 CL FD

LINE

DRIVE 1-6

CSV2 LATCH CBR1/456 CL FD

EX

PCS TCC

1234 CL DFLT FD

PCS CBR1/456 CL

EX

PCS TCC

N.L. OFF

CB26 PRESSURE CONTROL SOLENOID 4

EX

LINE

SOL 1 DRIVE 1-6

SOL 1 SOL 1

1b

LINE ACT FD LIM

N.C.

ON

DRIVE

35 REV CLUTCH LINE

SHIFT SOL 1

REVERSE

MANUAL VALVE

456 CLUTCH

DRIVE

COMP FEED CONTROL SOLENOID VALVE ASSEMBLY

21

CLUTCH SELECT VALVE 3

PCS 26 CL

3c

N.L. OFF

20

35 REV CL FDBK

N.C.

1

PS1

2c

456 CL

CBR

#5

51

N.C.

35 CL REV FD

SHIFT SOL 2

456 CL

40

DRIVE 1-6

EX

EX BF

PS1

35R CL BOOST VALVE

CSV3 ENABLE

ACT FD LIM

1234 CL DFLT

#3

35 REV CL

PCS 35 REV CL

OFF

SOL 2

EX

SOL 2

SOL 2

45

DRIVE 1-6 9

25

TCC REGULATOR VALVE SHTL 11

10

SOL 1

N.H.

EX

SOL 1

LINE PRESSURE CONTROL SOLENOID

EX

PCS LINE

#7

3b

PCS TCC

35R SPL

46

47

EX

3-5 REV CL REGULATOR VALVE 48

ACT FD LIM

ACT FD LIM REG APPLY

3a 1234 CL

ACT FD LIM

ON

SHTL 36

35

1-2-3-4 CL REGULATOR VALVE 34

33

1234 CL FD

50

EX

LINE

N.H.

REG APPLY

EX

C35R PRESSURE CONTROL SOLENOID 2

1234 CL FDBK

COMPENSATOR FD REG VALVE

C1234 PRESSURE CONTROL SOLENOID 5

14

13

LINE

PCS 1234 CL

PCS 1234 CL

EX

1234 CL DFLT ACT FD LIM

COMP FD

EX BACKFILL

PCS 1234 CL

N.L. OFF

COMP FD

COMP FD

LINE

LINE

54B

2b

2-6 CLUTCH ASSEMBLY

1234 CLUTCH 35 REV CLUTCH

ACT FD LIM

1 FLUID PRESSURE DIRECTED IN PREPARATION FOR A SHIFT 1a Manual Valve: With the manual valve in the reverse position, line pressure is directed into the reverse fluid circuit to the #2 ball check valve and clutch select valve 3. 1b #2 Ball Check Valve: Reverse fluid seats the #2 ball check valve against the solenoid 1 fluid passage and fluid is forced through orifice #22 into the CSV2 enable circuit. 1c Clutch Select Valve 2: CSV2 enable fluid, present at the valve from Park position, continues to hold the clutch select valve 2 against clutch select valve 2 spring force. 2 LOW & REVERSE CLUTCH APPLIES 2a Clutch Select Valve 3: Reverse fluid from the manual valve is routed to clutch select valve 3 to combine with clutch select valve 3 spring force to keep the valve in the off position. This allows reverse fluid to pass through the valve and enter the 3-5 clutch reverse feed circuit. 3-5 clutch reverse feed fluid from the clutch select valve 3 is also routed to #5 ball check valve. CBR1/CBR FD fluid is also directed through the clutch select valve 3 to the low and reverse clutch assembly. 2b Low & Reverse Clutch: CBR & CBR1 fluid pressures are routed to both the inner and outer areas of the low and reverse clutch piston to hold the piston against spring force and hold the low and reverse clutch plates. The clutch was already applied in Park, but is applied with more holding capacity in Reverse (both piston areas are pressurized). 2c #5 Ball Check Valve: 3-5 clutch reverse feed fluid seats #5 ball check valve against the drive 1-6 circuit allowing 3-5 clutch reverse feed fluid to enter the 3-5 reverse supply circuit. 3-5 reverse supply fluid is then routed to #7 ball check valve and through orifice #25 where is enters the 3-5 reverse feed circuit. 3-5 reverse feed passes through orifice #46 and then is routed to the 3-5 reverse clutch regulator valve. 3 3-5 REVERSE CLUTCH APPLIES 3a C35R Pressure Control Solenoid 2: The C35R Pressure Control Solenoid 2 is energized (HIGH) allowing actuator feed limit fluid to enter the PCS 3-5 reverse clutch circuit. PCS 3-5 reverse clutch fluid is then routed through orifice #48 to the 3-5 reverse clutch regulator valve and through orifice #40 to the 3-5 reverse boost valve. 3b 3-5 Reverse Clutch Regulator Valve: PCS 3-5 reverse clutch fluid moves the 3-5 reverse clutch regulator valve against 3-5 reverse clutch regulator valve spring force and 35 reverse clutch feedback fluid. This allows 3-5 reverse feed to pass through the valve and enter the 3-5 reverse clutch circuit. 3-5 reverse clutch fluid is then routed to the 3-5 reverse clutch and the 3-5 reverse boost valve. PS1 fluid from pressure switch 1 exhausts through the valve allowing the switch to close. 3c 3-5 Reverse Boost Valve: PCS 3-5 reverse clutch fluid pressure acts on a differential area moving the 3-5 reverse clutch boost valve against the 3-5 reverse clutch boost valve spring. 3-5 reverse clutch fluid passes through the valve and enters the 3-5 reverse clutch feedback circuit. As PCS 3-5 reverse clutch fluid pressure is increased to a given value, the 3-5 reverse clutch boost valve opens the 3-5 reverse clutch feedback circuit to exhaust. This results in the 3-5 reverse clutch regulator valve moving to the full feed position sending full 3-5 clutch reverse feed pressure (full line pressure) to the clutch. 3d 3-5 Reverse Clutch: 3-5 reverse clutch fluid enters the 1-2-3-4 & reverse clutch housing to move the piston against spring force and compensator feed fluid to apply the 3-5 reverse clutch plates.

CENTER SUPPORT ASSEMBLY

PS4 EX

APPLIED

35R FD ACT FD LIM

ON

EX EX BF CBR1/456 CL FD

ON

EX BF 26 CL

OFF

EX BF

OFF

COMP FD

OFF

COMP FD

ON

Figure 50

55

NEUTRAL

NEUTRAL (Engine Running)

(Engine Running) 3 LOW AND REVERSE CLUTCH APPLIED*

2 POWERFLOW TERMINATED

1 POWER FROM TORQUE CONVERTER (1)

➤

LOW & REV. CLUTCH

LOW CLUTCH SPRAG

APPLIED* * Applied with no load

• The manual shift shaft (508) and the manual valve (354) are in the Neutral position.

➤

➤

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH

When the gear selector lever is placed in the Neutral (N) position, mechanical power flow is identical to Park (P) range, except that the park lock actuator assembly (503) is disengaged. The park pawl spring (501) releases the park pawl (502) from the lugs on the output shaft assembly (70). With the park pawl disengaged, the output shaft is free to rotate allowing the vehicle to roll.

➤

➤ ➤

1-2-3-4 CLUTCH

NO POWER TRANSMITTED TO DIFFERENTIAL ASSEMBLY

1

Power from Torque Converter

The turbine shaft with 4-5-6 clutch assembly (56) is driven by the converter turbine. 2

Powerflow Terminated

Without any clutches applied, or sprag clutches holding, the turbine shaft with 4-5-6 clutch assembly (56) rotates freely and powerflow is terminated. INPUT CARRIER ASSEMBLY (52)

TORQUE CONVERTER ASSEMBLY (1)

TORQUE CONVERTER (WITH FLUID PUMP) HOUSING ASSEMBLY (2)

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

3

Low and Reverse Clutch Applied/Preparation for a Shift

The low and reverse clutch is applied in Neutral in preparation for a shift into either 1st or reverse. This aids shift timing as only one clutch will need to be applied to achieve either range. The 6 Speed RWD is designed to have two components applied for each gear range, except drive range 1st without engine braking. Also, in each forward range, the design includes that only one component will need to be applied as another component releases.

Neutral range may be selected for starting the engine when the vehicle is standing still or moving.

LOW AND REVERSE CLUTCH APPLIED*

OUTPUT SHAFT ASSEMBLY (70)

PARK PAWL (502) DISENGAGED

INPUT SUN GEAR (53) PARK PAWL ACTUATOR ASSEMBLY (503) 4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

* APPLIED BUT CARRYING NO LOAD

56

Figure 51

56A

NEUTRAL

NEUTRAL (Engine Running)

(Engine Running)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

ON/

ON

OFF

OFF

OFF

ON

3-5 REVERSE CLUTCH

1-2-3-4 CLUTCH

CENTER SUPPORT ASSEMBLY

APPLIED*

*APPLIED WITH NO LOAD

EX

REVERSE

LINE

DRIVE

DRIVE

CSV2 ENABLE

35 REV CL

DRIVE EX

EX

DRIVE

REVERSE

LINE 35 REV CL

ACT FEED LIMIT VALVE

SOL 1

12

EX

TCC PRESSURE CONTROL SOLENOID

22

CLUTCH SELECT VALVE 2

LINE

DRIVE BRAKE

EX

LINE

30

EX BACKFILL

N.H. ON

CBR1/CBR FD 49

1234 CL DFLT

1

N.C.

PS1

CBR 51

#5

35 CL REV FD

SHIFT SOL 2

456 CL

EX 35 REV CL FDBK

N.C.

CSV3 ENABLE

456 CL

35R CL BOOST VALVE

DRIVE 1-6

PS1

EX

20

1c

40

21

CLUTCH SELECT VALVE 3

PCS 26 CL

N.L. OFF

REVERSE 456 CL FD

SOL 1

CBR

41

26 CL

2-6 GAIN

PS3 EX

44

PCS 26 CL

DRIVE BRAKE DRV B EX

1f

26 CL/1234 CL FD

2-6 CLUTCH REG

EX BF 26 CL

ACT FD LIM CB26 PRESSURE CONTROL SOLENOID 4

43

REVERSE

COMP FD

456 CL 42

CBR1/CBR FD

26

35 REV CL 1234 CL

EXHAUST BACKFILL PRESSURE RELIEF VALVE

LINE

ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

1234 CL DFLT FD

CBR1/456 CL FD

CBR1/456 CL FD

DRIVE 1-6

CSV2 LATCH

CBR1/CBR FD

PCS TCC

456 CL FD

N.L. OFF

1234 CL DFLT FD

PCS CBR1/456 CL

EX

PCS TCC

#3

35 REV CL

PCS 35 REV CL

ON

SOL 2

SOL 2 45

3-5 REV CL REGULATOR VALVE

PCS TCC

35R SPL

9

TCC REGULATOR VALVE SHTL 11

10

SOL 1

N.H.

DRIVE 1-6

25

EX

PCS 35 REV CL

#7

SOL 1

EX

1234 CL

1e

LINE PRESSURE CONTROL SOLENOID

46

47

48

ACT FD LIM

EX

SOL 2

35R FD ACT FD LIM

When reverse fluid exhausts through the manual valve, CSV3 enable fluid moves the valve against clutch select valve 3 spring force. 3-5 reverse feed fluid is routed around #7 ball check valve and into the 3-5 reverse supply circuit. 3-5 reverse supply fluid is routed around #5 ball check valve and into the 3-5 clutch reverse feed circuit and exhausts at the clutch select valve 3.

EX

31

456 CL BOOST VALVE

EX BF

1f Clutch Select Valve 3:

37

CBR1 FDBK

ACT FD LIM

PCS CBR1/456 CL

CBR CBR 1

CBR1/C456 CL REG VALVE 39

EX

3-5 reverse clutch spring force combined with a force from the compensator moves the 3-5 reverse clutch piston to release the 3-5 reverse clutch plates and force 3-5 reverse clutch fluid to exhaust from the 1-2-3-4 and 3-5 reverse clutch housing. 3-5 reverse clutch fluid is then routed to the 3-5 reverse clutch regulator valve allowing the 3-5 reverse clutch to release.

#2 35 REV CLUTCH 1234 CLUTCH

38

EX BF

1e 3-5 Reverse Clutch:

P

SOL 1

PS5

SOL 1 SOL 1

EX EX BF CBR1/456 CL FD

ON

LINE

SHIFT SOL 1

LINE ACT FD LIM PS5 SOL 1 DRIVE 1-6

PS5

EX

LINE

PCS LINE

3-5 reverse clutch regulator valve spring force moves the valve to allow 3-5 reverse clutch fluid from the 3-5 reverse clutch and clutch select valve 2 to pass through the valve and enter the exhaust backfill fluid circuit. 3-5 reverse clutch fluid then enters the exhaust backfill fluid circuit and is routed through orifice #30 to the exhaust backfill pressure relief valve where excess pressure is exhausted.

D N R

MANUAL VALVE

N.C.

3-5 reverse boost valve spring force moves the valve to allow 3-5 reverse clutch feedback fluid from the 3-5 reverse clutch regulator valve to enter the 3-5 reverse clutch circuit and exhaust. 1d 3-5 Reverse Clutch Regulator Valve:

M

456 CLUTCH

ACT FD LIM

1c 3-5 Reverse Clutch Boost Valve:

1a

1234 CLUTCH 35 REV CLUTCH

1b C35R Pressure Control Solenoid 2:

The C35R pressure control solenoid 2 is commanded OFF allowing PCS 3-5 reverse clutch fluid from the 3-5 reverse clutch boost valve and 3-5 reverse clutch regulator valve to exhaust.

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

COMP FD

COMP FEED CONTROL SOLENOID VALVE ASSEMBLY

COMP FD

The manual valve is moved to the Neutral position and blocks line pressure from entering the reverse and drive fluid circuits. The reverse fluid from the #2 ball check valve and clutch select valve 3 is opened to an exhaust passage at the manual valve.

2-6 CLUTCH ASSEMBLY

1234 CLUTCH 35 REV CLUTCH

ACT FD LIM

1 3-5 REVERSE CLUTCH RELEASES: 1a Manual Valve:

4-5-6 CLUTCH ASSEMBLY

1d

ACT FD LIM

When the gear selector is moved to the Neutral (N) position, the hydraulic and electrical system operation is identical to Park (P) range. However, if Neutral is selected after the vehicle was operating in Reverse (R), the normally high C35R pressure control solenoid 2 is commanded OFF and the following changes would occur in the hydraulic system:

ACT FD LIM

1234 CL

1234 CL

1234 CL

1-2-3-4 CL REGULATOR VALVE 50

1234 CL BOOST VALVE 29

PCS 1234 CL

EX BACKFILL 1234 CL DFLT ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

PCS 1234 CL

PCS 1234 CL

PCS 1234 CL

COMPENSATOR FD REG VALVE

14

13

EX

1234 CL FD

COMP FD

33

EX

34

LINE

35

EX

SHTL 36

PS4 EX

LINE

COMP FD

N.H. OFF

1234 CL FDBK

ACT FD LIM

EX

C35R PRESSURE CONTROL SOLENOID 2

REG APPLY

REG APPLY

PCS 35 REV CL

1b

N.L. OFF

1234 CL FDBK

COMP FD

COMP FD

LINE

LINE

56B

COMPLETE HYDRAULIC CIRCUIT Page 78

Figure 52

57

DRIVE RANGE – 1ST GEAR

DRIVE RANGE – 1ST GEAR (Engine Braking)

(Engine Braking) 9 INPUT INTERNAL GEAR DRIVEN

8 1-2-3-4 CLUTCH APPLIED

POWER TO TORQUE CONVERTER (1)

4 LOW CLUTCH SPRAG ASSEMBLY (467) HOLDING

3 LOW AND REVERSE CLUTCH APPLIED*

5 OUTPUT CARRIER REAR OUTER PINION GEAR DRIVEN

2 OUTPUT CARRIER INTERNAL REAR GEAR (497) DRIVING

7 OUTPUT CARRIER REAR SUN GEAR (489) DRIVEN

1 POWER FROM DIFFERENTIAL ASSEMBLY

➤ ➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

➤

1-2-3-4 CLUTCH

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH

APPLIED

LOW & REV. CLUTCH

LOW CLUTCH SPRAG

APPLIED*

HOLDING

In Drive Range (D) 1st gear, torque from the engine is multiplied through the torque converter and transmission gearsets to the vehicle’s drive shaft. The planetary gears operate in reduction to achieve a 1st gear starting ratio of approximately 4.027:1. When the throttle is released in Drive Range – 1st Gear before the 1-2 shift has occurred (depending on vehicle speed), power from the vehicle wheels attempts to drive the transmission components faster than engine torque is driving them. Because the low and reverse clutch is applied and holds the output carrier assembly stationary, the low clutch sprag assembly (467) is prevented from overrunning and engine braking slows the vehicle. Note: The powerflow for 1st gear (Engine Braking) shown in figure 53 describes 1st gear conditions during deceleration (zero or minimum throttle conditions) and how engine compression braking is achieved. Transfer of engine torque during acceleration is identical to 1st gear as described on pages 60 and 60B.

• The manual shift shaft (508) and the manual valve (354) are in the Drive position. 1 6 OUTPUT CARRIER REAR INNER PINION GEARS DRIVEN

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

1-2-3-4 CLUTCH APPLIED

INPUT CARRIER ASSEMBLY (52) DRIVING

INPUT INTERNAL GEAR DRIVEN

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

1-2-3-4 CLUTCH HUB ASSEMBLY (61)

INPUT SUN GEAR (53) HELD

Power From the Differential Assembly

Power flow is transferred back through the transmission from the output shaft to the 4-5-6 (w/turbine shaft) clutch assembly. Each component functions and rotates the same as in acceleration. 2

Output Carrier Internal Rear Gear Driving

Power from the output shaft travels through the output carrier internal rear gear to drive the output carrier rear outer pinion gear. 3

Low and Reverse Clutch Applied

The low and reverse clutch, which is located within the center support assembly (67), is applied and holds the low clutch sprag outer race. This assists the low clutch sprag in holding the output carrier assembly (68) stationary. The low and reverse clutch will release before the 1-2 shift occurs. The transmission will have engine braking available up to a calibrated point before the 1-2 shift. 4

Low Clutch Sprag Assembly Holding

The power transferred to the output carrier assembly (68) by the output rear outer pinion gears attempts to rotate the carrier, but the carrier is held stationary by the low clutch sprag assembly (467). 5

Output Carrier Rear Outer Pinion Gears Driven

With the output carrier held, the output carrier rear outer pinions which are driven by the internal gear, drive the output inner pinions.

OUTPUT CARRIER REAR OUTER PINION OUTPUT GEAR CARRIER DRIVEN ASSEMBLY (68) HELD

LOW AND LOW CLUTCH REVERSE SPRAG CLUTCH ASSEMBLY APPLIED (467) HOLDING

OUTPUT CARRIER INTERNAL REAR GEAR (497) DRIVING

6 OUTPUT SHAFT ASSEMBLY (70)

The output carrier rear inner pinion gears are driven by the outer pinions and in turn, drive the output carrier rear sun gear (489). 7

CENTER SUPPORT ASSEMBLY (67)

58

Figure 53

OUTPUT CARRIER REAR INNER PINION GEAR DRIVEN

*APPLIED BEFORE THE FIRST 1-2 SHIFT HAS OCCURED.

Output Carrier Rear Sun Gear Driven

The output carrier rear sun gear (489) is splined to the 1-2-3-4 clutch hub assembly (61), continuing power flow back through the transmission to the 1-2-3-4 clutch assembly. 8

1-2-3-4 Clutch Applied

The 1-2-3-4 clutch is applied and power from the 1-2-3-4 clutch hub assembly (61), which is splined to the output carrier rear sun gear (489), continues on to the input carrier assembly (52). The input carrier assembly is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51). 9

REAR SUN GEAR (489) DRIVEN

Output Carrier Rear Inner Pinion Gears Driven

Input Internal Gear Driven

The input internal gear is located in the turbine shaft with 4-5-6 clutch assembly (56). The input internal gear is driven by the input carrier pinion gears which rotate around the stationary input sun gear (53). As vehicle speed increases, less torque multiplication is needed for maximum efficiency. Therefore, it is desirable to shift the transmission to a lower gear ratio, or 2nd gear. NOTE: Just before the 1-2 shift, the low and reverse clutch will release and the vehicle will be allowed to coast brake instead of having engine braking. The release of the low and reverse clutch at this time enables a smooth 1-2 shift as only one component will need to apply to achieve 2nd gear.

58A

DRIVE RANGE - 1ST GEAR

DRIVE RANGE – 1ST GEAR (Engine Braking)

(Engine Braking)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

1-2-3-4 CLUTCH

APPLIED HOLDING

When the gear selector lever is moved to the Drive (D) range from the Neutral (N) position, the transmission will provide engine braking. In this operating range, the normally-low C1234 pressure control solenoid 5 is commanded ON and in the engine braking mode the following changes occur within the hydraulic circuits:

CENTER SUPPORT ASSEMBLY 4-5-6 CLUTCH ASSEMBLY

2d

COMPLETE HYDRAULIC CIRCUIT Page 82

LINE

1234 CL

CBR1/CBR FD 49

REVERSE 1234 CL DFLT FD

DRIVE 1-6

CBR1/CBR FD

#1

DRIVE 1-6

REVERSE

26 CL/1234 CL FD

41

PCS 26 CL

SOL 1

2-6 GAIN

26 CL

44

CBR

2-6 CLUTCH REG

PCS 26 CL

DRIVE BRAKE DRV B EX

COMP FD ACT FD LIM

43

CBR1/CBR FD

1c

456 CL 42

1234 CL DFLT FD

30

EX

26

EX BACKFILL

21

CLUTCH SELECT VALVE 3

26 CL

20

N.C.

3

CSV2 ENABLE

35 REV CL

DRIVE EX

EX

EX EX

1d EXHAUST BACKFILL PRESSURE RELIEF VALVE

N.H. ON

N.L. OFF

EX

DRIVE CBR1/456 CL FD

LINE

LINE

LINE

ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

CB26 PRESSURE CONTROL SOLENOID 4

REVERSE

DRIVE

DRIVE

LINE

ACT FEED LIMIT VALVE

CSV2 LATCH CBR1/456 CL FD

456 CL FD

PCS TCC

22

CLUTCH SELECT VALVE 2

REVERSE 456 CL FD

N.L. OFF

1234 CL DFLT

PS3

ACT FD LIM

PS3

1

N.C.

PS1

CBR 51

35 CL REV FD

SHIFT SOL 2

456 CL

35 REV CL FDBK

N.C.

CSV3 ENABLE

35 CL REV FD

456 CL

EX BF

PS1

#3

35 REV CL

PCS 35 REV CL

ON

SOL 2

SOL 2 45

3-5 REV CL REGULATOR VALVE

DRIVE 1-6

ACT FD LIM

11

10

SOL 1

N.H.

9

TCC REGULATOR VALVE SHTL

EX

LINE PRESSURE CONTROL SOLENOID

SOL 1

EX BF

PCS TCC

26 CL/1234 CL FD

46

47

48

ACT FD LIM

EX

SOL 2

REG APPLY

REG APPLY

2b 1234 CL

#6 32

1234 CL BOOST VALVE 29

EX BACKFILL

1e 1234 CL DFLT

ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

PCS 1234 CL

PCS 1234 CL

COMPENSATOR FD REG VALVE

14

13

EX

2c

1234 CL FD

2a

COMP FD

33

EX

34

LINE

35

50

EX

36

1-2-3-4 CL REGULATOR VALVE

1234 CL FDBK

LINE

N.H. OFF

SHTL

1234 CL

1234 CL

ACT FD LIM

PCS 1234 CL

C35R PRESSURE CONTROL SOLENOID 2

N.L.

58B

SOL 1

12

1b

EX PCS CBR1/456 CL

TCC PRESSURE CONTROL SOLENOID

ON

2d 1-2-3-4 Clutch:

1234 clutch fluid enters the 1234 clutch housing to move the piston against spring force and compensator feed fluid to apply the 1-2-3-4 clutch plates.

CBR CBR 1

31

456 CL BOOST VALVE

2c 1-2-3-4 Clutch Boost Valve:

PCS1234 clutch fluid pressure acts on a differential area moving the 1234 clutch boost valve against the 1234 clutch boost valve spring. 1234 clutch fluid passes through the valve and enters the 1234 clutch feedback circuit. As PCS 1234 clutch fluid pressure is increased to a given value, the 1234 clutch boost valve opens the 1234 clutch feedback circuit to exhaust. This results in the 1234 clutch regulator valve moving to the full feed position sending full 26 CL/1234 CL feed pressure (full line pressure) to the clutch.

37

CBR1 FDBK

ACT FD LIM

PCS CBR1/456 CL

1234 CL

PCS1234 clutch fluid moves the 1-2-3-4 clutch regulator valve against 1-2-3-4 clutch regulator valve spring force to allow 1234 clutch feed fluid to pass through the valve and enter the 1234 clutch fluid circuit. 1234 clutch fluid is then routed to the 1234 clutch boost valve and the 1-2-3-4 clutch.

#2

EX

2b 1-2-3-4 Clutch Regulator Valve:

SOL 1

CBR1/C456 CL REG VALVE 39

EX

The C1234 Pressure Control Solenoid 5 is commanded ON allowing actuator feed limit fluid to enter the PCS1234 clutch fluid circuit. PCS1234 clutch fluid is then routed through orifice #35 to the 1-2-3-4 clutch regulator valve. PCS1234 clutch fluid is also routed through orifice #29 and then to the 1-2-3-4 clutch boost valve.

PS5

38

1234 CLUTCH

LINE

COMP FD

ACT FD LIM

ACT FD LIM

SOL 1

ON

COMP FD

2 1-2-3-4 CLUTCH APPLIES 2a C1234 Pressure Control Solenoid 5:

SOL 1 DRIVE 1-6

SOL 1

SHIFT SOL 1

PCS LINE

CB26/C1234 feed fluid seats the #6 ball check valve against the 1234 clutch feed passage forcing CB26/C1234 feed fluid through orifice #32 before entering the 1234 clutch feed circuit. 1234 clutch feed fluid is routed through orifice #33 and then to the 1-2-3-4 clutch regulator valve.

P

LINE ACT FD LIM

1d #1 Ball Check Valve:

1e #6 Ball Check Valve:

D N R

MANUAL VALVE

456 CLUTCH

LINE

Drive brake fluid at the clutch select valve 3 passes through the valve and enters the Drive B fluid circuit. Drive B fluid is then routed to #1 ball check valve. Drive B fluid seats the #1 ball check valve against drive 1-6 fluid to force drive B fluid into the CB26/C1234 feed passage. CB26/C1234 feed fluid is routed to the #6 ball check valve, through orifice #43 and, to the 2-6 clutch regulator valve. CB26/C1234 feed fluid passes through the 2-6 clutch regulator valve and enters the PS3 fluid circuit. PS3 fluid is then routed to the normally closed pressure switch 3 and opens the switch.

M

1234 CLUTCH

1b Clutch Select Valve 2:

1c Clutch Select Valve 3:

1a

COMP FD

N.C.

The manual valve is moved to the Drive (D) position and allows line fluid pressure to enter the drive fluid circuit. Drive fluid is then routed to the clutch select valve 2. Drive fluid at the clutch select valve 2 passes through the valve and enters the drive brake circuit. Drive brake fluid is then routed to the clutch select valve 3.

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

EX

COMP FEED CONTROL SOLENOID VALVE ASSEMBLY

1 FLUID PRESSURE IS DIRECTED TO THE 1-2-3-4 CLUTCH AND THE LOW & REVERSE CLUTCH TO PROVIDE ENGINE BRAKING 1a Manual Valve:

2-6 CLUTCH ASSEMBLY

1234 CLUTCH 35 REV CLUTCH

EX

APPLIED

PS3 EX

ON

EX

OFF

PS4 EX

OFF

35R FD ACT FD LIM

ON

EX EX BF CBR1/456 CL FD

ON

EX BF 26 CL

ON

3-5 REVERSE CLUTCH

1234 CL FDBK COMP FD

COMP FD

LINE

LINE

Figure 54

59

DRIVE RANGE – 1ST GEAR

DRIVE RANGE – 1ST GEAR 1 POWER FROM TORQUE CONVERTER (1)

2 INPUT INTERNAL GEAR DRIVING

3 1-2-3-4 CLUTCH APPLIED

8 LOW CLUTCH SPRAG ASSEMBLY (467) HOLDING

7 LOW AND REVERSE CLUTCH RELEASED

6 OUTPUT CARRIER REAR OUTER PINION GEAR DRIVING

9 OUTPUT CARRIER INTERNAL REAR GEAR (497) DRIVEN

4 OUTPUT CARRIER REAR SUN GEAR (489) DRIVING

➤

➤ POWER TO DIFFERENTIAL ASSEMBLY

1

2

➤

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

1-2-3-4 CLUTCH APPLIED

Power from Torque Converter

Input Internal Gear Driving

The input internal gear is located in the turbine shaft with 45-6 clutch assembly (56). The input internal gear drives the input carrier pinion gears which rotate around the stationary input sun gear (53), thus driving the input carrier assembly (52) in reduction. The input carrier is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51), which is rotating in the same direction as the turbine shaft but in reduction.

5 OUTPUT CARRIER REAR INNER PINION GEAR DRIVING

INPUT CARRIER ASSEMBLY (52) DRIVEN

HOLDING

• The manual shift shaft (508) and the manual valve (354) are in the Drive position.

3

INPUT INTERNAL GEAR DRIVING

LOW CLUTCH SPRAG

In Drive Range (D) 1st gear, torque from the engine is multiplied through the torque converter and transmission gearsets to the vehicle’s drive shaft. The planetary gears operate in reduction to achieve a 1st gear starting ratio of approximately 4.027:1.

➤

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

LOW & REV. CLUTCH

The turbine shaft with 4-5-6 clutch assembly (56) is driven by the converter turbine.

➤

➤

➤

➤

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH

APPLIED

➤

➤ ➤

➤

➤

➤

➤

1-2-3-4 CLUTCH

1-2-3-4 CLUTCH HUB ASSEMBLY (61)

1-2-3-4 Clutch Applied

The 1-2-3-4 clutch is applied and holds the 1-2-3-4 clutch hub assembly (61), which is splined to the output carrier rear sun gear (489). 4

Output Carrier Rear Sun Gear Driving

The output carrier rear sun gear (489) is splined to the 1-23-4 clutch hub assembly (61) and rotates at the same speed and the same direction as the 1-2-3-4 and 3-5 reverse clutch assembly (51). 5

Output Carrier Rear Inner Pinion Gears Driving

The output carrier rear sun gear drives the inner pinion gears of the rear carrier assembly in the opposite direction of the sun gear. 6

Output Carrier Rear Outer Pinion Gears Driving

The rear inner planetary pinion gears drive the outer pinion gears in the opposite direction, which is the same direction as the 1-2-3-4 and 3-5 reverse clutch assembly. The outer pinion gears are in mesh with the output rear inner pinion gears and the output internal rear gear.

INPUT SUN GEAR (53) HELD

7

Low and Reverse Clutch Released

The low and reverse clutch releases before the 1-2 shift occurs which will allow the low clutch sprag outer race to rotate freely. 8

OUTPUT CARRIER REAR OUTER PINION OUTPUT GEAR CARRIER DRIVING ASSEMBLY (68) HELD

LOW AND LOW CLUTCH REVERSE SPRAG CLUTCH ASSEMBLY RELEASED (467) HOLDING

CENTER SUPPORT ASSEMBLY (67)

60

REAR SUN GEAR (489) DRIVING

Figure 55

OUTPUT CARRIER REAR INNER PINION GEAR DRIVING

OUTPUT CARRIER INTERNAL REAR GEAR (497) DRIVEN

Low Clutch Sprag Assembly Holding

The power transferred to the output carrier assembly (68) by the output rear outer pinion gears attempts to rotate the carrier, but the carrier is held stationary by the low clutch sprag assembly (467). When the throttle is released, however, the low clutch sprag will overrun which allows the vehicle to coast, at least briefly until the TCM determines engine braking is required. At that time, the low and reverse clutch will apply and hold the low clutch sprag outer race.

OUTPUT SHAFT ASSEMBLY (70)

9

Output Carrier Internal Rear Gear Driven

With the output carrier assembly (68) held, the output carrier outer pinion gears drive the internal rear gear (497) to achieve the 1st gear starting ratio of approximately 4.027:1 • When the throttle is released in Drive Range – 1st Gear, power from the vehicle wheels attempts to drive the transmission components faster than engine torque is driving them. Because the low and reverse clutch is released, the low clutch sprag assembly (467) will overrun and the vehicle is able to coast. This occurs only briefly, until engine braking or 2nd gear is achieved. As vehicle speed increases, less torque multiplication is needed for maximum efficiency. Therefore, it is desirable to shift the transmission to a lower gear ratio, or 2nd gear.

60A

DRIVE RANGE - 1ST GEAR

DRIVE RANGE – 1ST GEAR

CENTER SUPPORT ASSEMBLY

CBR 1 CBR

LINE

DRIVE

#4

456 CL

EX

EX BACKFILL

N.H. OFF

CBR1/CBR FD 49

N.L. OFF

CBR1/CBR FD

EX

REVERSE 456 CL FD

REVERSE

CBR

REVERSE CSV2 ENABLE

35 REV CL 20

1234 CL DFLT

N.C.

PCS 35 REV CL

1

456 CL

EX

40

35 REV CL FDBK

CBR

PS1

51

#5

35 CL REV FD

35 CL REV FD

SHIFT SOL 2

456 CL

N.C.

35 REV CL

EX BF

PS1

1f

35R CL BOOST VALVE

CSV3 ENABLE

ACT FD LIM

PS3

#3

35 REV CL

ON

SOL 2

SOL 2 EX

45

35R SPL

ACT FD LIM

#6 32

1234 CL BOOST VALVE

PCS 1234 CL

1234 CL DFLT ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

N.L.

PCS 1234 CL

PCS 1234 CL

COMPENSATOR FD REG VALVE

14

13

EX

29

EX BACKFILL

LINE

1234 CL FD

EX

33

50

EX

34

1234 CL FDBK

35

1-2-3-4 CL REGULATOR VALVE

PS4 EX

LINE

N.H. OFF

36

1234 CL

1234 CL

1234 CL

SHTL

10

REG APPLY

REG APPLY

1g

EX

ACT FD LIM

11

SOL 1

N.H.

9

TCC REGULATOR VALVE SHTL

EX

1234 CL

LINE PRESSURE CONTROL SOLENOID

C35R PRESSURE CONTROL SOLENOID 2

DRIVE 1-6

25

EX

EX

#7

SOL 1

PCS 35 REV CL

PCS TCC

26 CL/1234 CL FD

EX BF

PCS LINE

46

47

35R FD ACT FD LIM

3-5 REV CL REGULATOR VALVE 48

ACT FD LIM

COMP FD

SOL 2

COMP FD

Low and reverse clutch spring force moves the low and reverse clutch piston which forces CBR and CBR1 fluid out of the center support. CBR fluid is routed to the clutch select valve 3 where it exhausts. CBR1 fluid is routed to the clutch select valve 2 where it exhausts. The low and reverse clutch is in the released position.

26 CL

PCS 26 CL

35R supply fluid seats the #7 ball check valve against the 35R feed fluid passage to force 35R supply fluid through orifice #25 before entering the 35R feed circuit. 35R feed fluid is then routed to the 3-5 reverse clutch regulator valve. 1h Low and Reverse Clutch:

21

CLUTCH SELECT VALVE 3

3

PCS 35 REV CL

1g #7 Ball Check Valve:

41

PS3 EX

2-6 GAIN

1f #5 Ball Check Valve:

Drive 1-6 fluid pressure seats the #5 ball check valve against the 35 clutch reverse feed fluid passage. Drive 1-6 fluid is then directed into the 35R supply fluid circuit which is routed to the #7 ball check valve and orifice #25.

EX BF 26 CL

44

PCS 26 CL

N.C.

1e #4 Ball Check Valve:

PS5 fluid pressure seats the #4 ball check valve against the 456 clutch fluid circuit. PS5 fluid is then directed into the CSV2 latch fluid circuit and routed to the clutch select valve 2. CSV2 latch fluid combines with clutch select valve 2 spring force and holds the valve in this position during all six forward gear ranges.

26 CL/1234 CL FD

2-6 CLUTCH REG

SOL 1 DRIVE 1-6

COMP FD

ACT FD LIM CB26 PRESSURE CONTROL SOLENOID 4

43

DRIVE BRAKE DRV B EX

456 CL 42

DRIVE EX

#1 1234 CL DFLT FD

30

26

1b

DRIVE 1-6

EXHAUST BACKFILL PRESSURE RELIEF VALVE

LINE

456 CL FD

PCS CBR1/456 CL

ACT FD LIM

LINE

LINE

1234 CL DFLT FD

CBR1/456 CL FD

CBR1/456 CL FD

CBR1/C456 PRESSURE CONTROL SOLENOID 3

CBR1/CBR FD

PCS TCC

1d CBR1/C456 Clutch Regulator Valve:

CBR1/C456 clutch regulator valve spring force moves the valve to exhaust the CBR1/456 clutch feed circuit and allow drive 1-6 fluid to enter the PS5 fluid circuit. PS5 fluid is then routed to the normally-closed pressure switch 5 and opens the switch. PS5 fluid is also routed to the #4 ball check valve and flows into the CSV2 latch fluid circuit.

DRIVE 1-6

CSV2 LATCH

N.L. OFF

1c

22

CLUTCH SELECT VALVE 2

EX

EX

12

1e

EX

456 CL BOOST VALVE TCC PRESSURE CONTROL SOLENOID

EX

CBR1 FDBK

31

DRIVE

37

LINE

39

PCS CBR1/456 CL

ACT FEED LIMIT VALVE

CBR1/C456 CL REG VALVE

1a

1c CBR1/C456 Pressure Control Solenoid 3:

The CBR1/C456 pressure control solenoid 3 is commanded OFF allowing PCS CBR1/C456 fluid from the CBR1/C456 clutch regulator valve and 456 clutch boost valve to exhaust.

#2

ACT FD LIM

38

SOL 1

PS5

1d

SOL 1 DRIVE 1-6 CBR CBR 1

SOL 1

SOL 1

1b Clutch Select Valve 2:

CSV2 enable fluid is exhausted from the clutch select valve 2 and clutch select valve 2 spring force moves the valve to the released position. With clutch select valve 2 in the released position, drive fluid from the manual valve passes through the valve and enters the drive 1-6 fluid circuit. Drive 1-6 fluid then feeds all clutch regulator valves and the TCC regulator valve.

DRIVE

PS5

ACT FD LIM

OFF

P

LINE ACT FD LIM

N.C.

5

D N R

MANUAL VALVE

1234 CLUTCH LINE

PS5

SHIFT SOL 1

M

456 CLUTCH

CONTROL SOLENOID VALVE ASSEMBLY

N.C.

When shift solenoid 1 is “turned OFF”, CSV2 enable fluid from the clutch select valve 2 passes by the #2 ball check valve and enters the solenoid 1 fluid circuit. Solenoid 1 fluid from the #2 ball check valve and TCC regulator valve is then routed to the solenoid where it exhausts.

COMP FD

COMP FEED

1h

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

1234 CLUTCH 35 REV CLUTCH

1 LOW & REVERSE CLUTCH RELEASES 1a Shift Solenoid 1:

2-6 CLUTCH ASSEMBLY

EX

4-5-6 CLUTCH ASSEMBLY

1234 CLUTCH

As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, throttle position sensor and other vehicle sensors to determine the precise moment to deenergize or “turn off” shift solenoid 1 and command OFF the normally-high CBR1/C456 pressure control solenoid 3.

REVERSE

HOLDING

1234 CL DRIVE 1-6

APPLIED

PS5

OFF

EX

OFF

EX EX BF CBR1/456 CL FD

OFF

LINE

ON

COMP FD

ON

ACT FD LIM

OFF

3-5 REVERSE CLUTCH

1-2-3-4 CLUTCH

SOL 1

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

ON

1234 CL FDBK COMP FD

COMP FD

LINE

LINE

60B

COMPLETE HYDRAULIC CIRCUIT Page 84

Figure 56

61

DRIVE RANGE – 2ND GEAR

DRIVE RANGE – 2ND GEAR 3 1-2-3-4 CLUTCH APPLIED

2 INPUT INTERNAL GEAR DRIVING

6 2-6 CLUTCH APPLIED

8 OUTPUT CARRIER ASSEMBLY DRIVEN

➤

➤

4 OUTPUT CARRIER REAR SUN GEAR (489) DRIVING

9 OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

➤

➤

➤

➤

➤

➤ ➤

➤

➤

POWER TO DIFFERENTIAL ASSEMBLY

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

1-2-3-4 CLUTCH APPLIED

INPUT CARRIER ASSEMBLY (52) DRIVEN

1

2

5 OUTPUT CARRIER REAR INNER PINION GEARS DRIVING

INPUT INTERNAL GEAR DRIVING

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH

APPLIED

APPLIED

LOW & REV. CLUTCH

LOW CLUTCH SPRAG

Power from Torque Converter

The turbine shaft with 4-5-6 clutch assembly (56) is driven by the converter turbine.

➤

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

1-2-3-4 CLUTCH

As vehicle speed increases, input signals from the transmission speed sensors (input and output), throttle position (TP) sensor, and other vehicle sensors are sent to the transmission control module (TCM). The TCM processes this information to determine the precise moment to shift the transmission. In 2nd gear, the planetary gearset continues to operate in reduction at a gear ratio of approximately 2.364:1.

➤

➤ ➤

7 OUTPUT CARRIER FRONT SUN GEAR (487) HELD

➤

1 POWER FROM TORQUE CONVERTER (1)

1-2-3-4 CLUTCH HUB ASSEMBLY (61)

The input internal gear is located in the turbine shaft with 45-6 clutch assembly (56). The input internal gear drives the input carrier pinion gears which rotate around the stationary input sun gear (53) thus driving the input carrier assembly (52) in reduction. The input carrier is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51), which is rotating in the same direction as the turbine shaft but in reduction. 3

1-2-3-4 Clutch Applied

The 1-2-3-4 clutch is applied and holds the 1-2-3-4 clutch hub assembly (61), which is splined to the output carrier rear sun gear (489). 4

Output Carrier Rear Sun Gear Driving

The output carrier rear sun gear (489) is splined to the 1-23-4 clutch hub assembly (61) and rotates at the same speed and the same direction as the 1-2-3-4 and 3-5 reverse clutch assembly. 5

INPUT SUN GEAR (53) HELD

Input Internal Gear Driving

Output Carrier Rear Inner Pinion Gears Driving

The output carrier rear sun gear drives the inner pinion gears of the rear carrier assembly in the opposite direction of the sun gear. 6

2-6 Clutch Applied

The 2-6 clutch, which is located within the center support assembly (67), is applied and holds the 2-6 and 3-5 reverse clutch hub assembly (64). OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

2-6 AND 3-5 REVERSE CLUTCH HUB ASSEMBLY (64) HELD

2-6 CLUTCH APPLIED

OUTPUT SHAFT ASSEMBLY (70)

Output Carrier Front Sun Gear Held

The 2-6 and 3-5 reverse clutch hub assembly (64) is splined to the output carrier front sun gear (487), therefore the output carrier front sun gear is held. 8

Output Carrier Assembly Driven

The output carrier rear inner pinion gears drive the output carrier rear outer pinion gears which drive the output carrier. The output carrier drives the output front pinion gears around the stationary output carrier front sun gear. The front pinion gears drive the output carrier internal front gear (495).

LOW CLUTCH SPRAG ASSEMBLY (467)

9

Output Carrier Internal Front Gear Driven

The front pinion gears drive the internal front gear to achieve the 2nd gear ratio of approximately 2.364:1

CENTER SUPPORT ASSEMBLY (67)

62

7

OUTPUT CARRIER FRONT SUN GEAR (487) HELD

Figure 57

REAR SUN GEAR (489) DRIVING

OUTPUT CARRIER ASSEMBLY (68) DRIVEN

OUTPUT CARRIER REAR INNER PINION GEARS DRIVING

• When the throttle is released in 2nd gear, the vehicle is allowed to coast brake. Because the low clutch sprag is not used in driving the vehicle during acceleration, there are no elements to overrun to allow the vehicle to coast freely. Therefore, engine compression slows the vehicle when the throttle is released. As vehicle speed increases, less torque multiplication is needed to move the vehicle efficiently. Therefore, it is desirable to shift the transmission to a lower gear ratio, or 3rd gear.

62A

DRIVE RANGE - 2ND GEAR

DRIVE RANGE – 2ND GEAR 3-5 REVERSE CLUTCH

LINE ACT FD LIM

N.C.

5

DRIVE 1-6

#4

CSV2 ENABLE

35 REV CL

DRIVE EX

EX 456 CL FD

#1 DRV B

CBR1/CBR FD

EX

DRIVE 1-6

41

26 CL

2-6 GAIN

PS3 EX

44

PCS 26 CL

CB26 PRESSURE CONTROL SOLENOID 4

REVERSE 456 CL FD

26 CL/1234 CL FD

REVERSE

43

2-6 CLUTCH REG

EX BF 26 CL

ACT FD LIM

42

DRIVE BRAKE DRV B EX

COMP FD

1a

1234 CL DFLT FD

EX BACKFILL

26 CL

1234 CL DRIVE 1-6

1c

30

456 CL

21

CLUTCH SELECT VALVE 3

1b

N.L. ON

20

1234 CL DFLT

N.C.

ACT FD LIM

1

CBR

35 REV CL FDBK PS1

#5 35 CL REV FD

35 CL REV FD

SHIFT SOL 2

35 CL REV FD

456 CL

N.C.

CSV3 ENABLE

EX BF

PS1

456 CL

35 REV CL

3 PS3

N.C.

1234 CL DFLT FD

456 CL EX 26

N.H. OFF

1d 2-6 Clutch:

26 clutch fluid from the 2-6 clutch regulator valve is routed through the center support and to the 2-6 clutch piston assembly. 26 clutch fluid pressure moves the piston against 2-6 clutch spring force to apply the 2-6 clutch plates.

DRIVE BRAKE

EXHAUST BACKFILL PRESSURE RELIEF VALVE

DRIVE 1-6

LINE

ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

CBR1/456 CL FD LINE

LINE

DRIVE 1-6

CSV2 LATCH PCS TCC

PCS CBR1/456 CL

PCS 26 clutch fluid moves the 2-6 clutch regulator / gain valve assembly against the 2-6 clutch regulator valve spring force to allow 26 clutch/1234 clutch feed fluid to pass through the valve. 26 clutch/1234 clutch feed fluid is routed into the 26 clutch fluid circuit where it passes through orifice #41 and then to the spring end of the 2-6 clutch regulator valve, and to the 2-6 clutch within the center support.

22

CLUTCH SELECT VALVE 2

N.L. OFF

1c 2-6 Clutch Regulator Valve:

EX

12

CBR1/CBR FD

PCS TCC

EX

TCC PRESSURE CONTROL SOLENOID

37

CBR1 FDBK

DRIVE

39

PCS CBR1/456 CL

LINE

LINE

38

CBR1/C456 CL REG VALVE

ACT FEED LIMIT VALVE

SOL 1

COMP FD

OFF

ACT FD LIM

SHIFT SOL 1

PS5

ACT FD LIM

PS5 N.C.

P

EX

1234 CLUTCH LINE

D N R

MANUAL VALVE

DRIVE

CONTROL SOLENOID VALVE ASSEMBLY

1b 2-6 Clutch Regulator Gain Valve:

The 2-6 clutch regulator gain valve allows the gain (valve input to output pressure magnification factor) of the 26 clutch regulator valve to be different for a 1-2 shift verses a 5-6 shift. For a 1-2 shift, PCS 26 clutch fluid pressure acts on a differential area resulting in the "high gain" pressure output.

1d

COMP FD

M

456 CLUTCH

ACT FD LIM

The CB26 pressure control solenoid 4 is commanded ON, allowing actuator feed limit fluid to enter the PCS 2-6 clutch fluid circuit. PCS 26 clutch fluid is then routed through orifice #44 to the 2-6 clutch regulator gain valve.

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

1234 CLUTCH 35 REV CLUTCH COMP FEED

1 2ND CLUTCH APPLIES 1a CB26 Pressure Control Solenoid 4:

2-6 CLUTCH ASSEMBLY

REVERSE

4-5-6 CLUTCH ASSEMBLY

LINE

As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command ON the normally-low pressure control solenoid 4.

CENTER SUPPORT ASSEMBLY

DRIVE

1-2-3-4 CLUTCH

APPLIED

PS5

APPLIED

26 CLUTCH

OFF

1234 CLUTCH

OFF

PS5

ON

EX

ON

EX EX BF CBR1/456 CL FD

ON

PCS CBR1/456 CL

OFF

CBR 1 CBR

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

#3

35 REV CL

ON

SOL 2

SOL 2

EX

45

35R SPL

ACT FD LIM

11

EX

#6

1-2-3-4 CL REGULATOR VALVE

1234 CL BOOST VALVE

1234 CL DFLT ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

N.L.

PCS 1234 CL

PCS 1234 CL

COMPENSATOR FD REG VALVE

14

13

EX

29

COMP FD

1234 CL FD

EX

EX BACKFILL

32 50

EX

33

1234 CL FDBK

34

PCS 1234 CL

35

PS4 EX

LINE

COMP FD

N.H. OFF

SHTL

1234 CL

1234 CL

1234 CL

36

10

REG APPLY

REG APPLY

PCS 35 REV CL

ACT FD LIM

9

TCC REGULATOR VALVE SHTL

SOL 1

1234 CL

N.H.

C35R PRESSURE CONTROL SOLENOID 2

DRIVE 1-6

25

EX

EX

#7

LINE PRESSURE CONTROL SOLENOID

EX

PCS 35 REV CL

PCS TCC

26 CL/1234 CL FD

EX BF

PCS LINE

46

47

35R FD ACT FD LIM

3-5 REV CL REGULATOR VALVE 48

ACT FD LIM

LINE

SOL 2

ON

1234 CL FDBK COMP FD

COMP FD

LINE

LINE

62B

COMPLETE HYDRAULIC CIRCUIT Page 86

Figure 58

63

DRIVE RANGE – 3RD GEAR 2 INPUT INTERNAL GEAR DRIVING

6 3-5 REVERSE CLUTCH APPLIED

➤

➤

5 OUTPUT CARRIER REAR OUTER PINION GEARS DRIVING

8 OUTPUT CARRIER INTERNAL REAR GEAR (497) DRIVEN

4 OUTPUT CARRIER REAR SUN GEAR (489) DRIVING

➤

POWER TO DIFFERENTIAL ASSEMBLY

➤

➤

➤

➤

➤ ➤

➤

➤

➤ ➤ ➤

7 OUTPUT CARRIER FRONT SUN GEAR (487) DRIVING

➤ ➤

➤

➤

8a OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

➤

3 1-2-3-4 CLUTCH APPLIED

➤

1 POWER FROM TORQUE CONVERTER (1)

DRIVE RANGE – 3RD GEAR

➤

1-2-3-4 CLUTCH APPLIED 1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

3-5 REVERSE CLUTCH APPLIED

INPUT CARRIER ASSEMBLY (52) DRIVEN

INPUT INTERNAL GEAR DRIVING

INPUT SUN GEAR (53) HELD

1-2-3-4 CLUTCH HUB ASSEMBLY (61)

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH

APPLIED

APPLIED

LOW & REV. CLUTCH

LOW CLUTCH SPRAG

As vehicle speed continues to increase, input signals from the transmission speed sensors (input and output), throttle position (TP) sensor, and other vehicle sensors are sent to the TCM. The TCM uses this information to determine the precise moment to shift the transmission into 3rd gear. In 3rd gear, the planetary gearset continues to operate in reduction at a gear ratio of approximately 1.532:1. 1

Power from Torque Converter

The turbine shaft with 4-5-6 clutch assembly (56) is driven by the converter turbine. 2

5a OUTPUT CARRIER REAR INNER PINION GEARS DRIVING

1-2-3-4 CLUTCH

Input Internal Gear Driving

The input internal gear is located in the turbine shaft with 45-6 clutch assembly (56). The input internal gear drives the input carrier pinion gears which rotate around the stationary input sun gear (53), thus driving the input carrier assembly (52) in reduction. The input carrier is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51), which is rotating in the same direction as the turbine shaft but in reduction. 3

1-2-3-4 Clutch Applied

The 1-2-3-4 clutch is applied and holds the 1-2-3-4 clutch hub assembly (61), which is splined to the output carrier rear sun gear (489). 4

Output Carrier Rear Sun Gear Driving

The output carrier rear sun gear (489) is splined to the 1-23-4 clutch hub assembly (61) and rotates at the same speed and the same direction as the 1-2-3-4 and 3-5 reverse clutch assembly. 5/5a Output Carrier Rear Pinion Gears Driving

The output carrier rear sun gear drives the inner pinion gears of the rear carrier assembly in the opposite direction of the sun gear. 6

3-5 Reverse Clutch Applied

The 3-5 reverse clutch, which is located within the 1-2-3-4 and 3-5 reverse clutch assembly (51) is applied and holds the 2-6 and 3-5 reverse clutch hub assembly (64). 7

LOW CLUTCH SPRAG ASSEMBLY (467)

OUTPUT CARRIER REAR OUTER PINION GEARS DRIVING

OUTPUT CARRIER INTERNAL REAR GEAR (497) DRIVEN

2-6 AND 3-5 REVERSE CLUTCH HUB ASSEMBLY (64)

OUTPUT CARRIER FRONT SUN GEAR (487) DRIVING

64

Figure 59

OUTPUT CARRIER REAR SUN GEAR (489) DRIVING

OUTPUT CARRIER REAR INNER PINION GEARS DRIVING

OUTPUT SHAFT ASSEMBLY (70)

Output Carrier Front Sun Gear Driving

The 2-6 and 3-5 reverse clutch hub assembly (64) is splined to the output carrier front sun gear. Therefore, the sun gear is rotating at the same speed as the 1-2-3-4 and 3-5 reverse clutch assembly and drives the output carrier front pinion gears. 8/8a Output Carrier Internal Gears Driven

With input power from the output carrier front sun gear and rear sun gear, the output carrier internal gears will be driven in a gear ratio of approximately 1.532:1

OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

When the throttle is released in 3rd gear, the vehicle is allowed to coast brake. Because the low clutch sprag is not used in driving the vehicle during acceleration, there are no elements to overrun to allow the vehicle to coast freely. Therefore, engine compression slows the vehicle when the throttle is released until the transmission downshifts into 2nd gear. As vehicle speed increases, less torque multiplication is required to move the vehicle efficiently. Therefore, it is desirable to shift the transmission to a lower gear ratio, or 4th gear.

64A

DRIVE RANGE - 3RD GEAR

2-6 CLUTCH ASSEMBLY

PS5

5

EX

PS5

EX

DRIVE BRAKE

23

DRV B

CBR1/CBR FD

EX

DRIVE 1-6

41

26 CL

2-6 GAIN

PS3 EX

EX BF 26 CL

44

PCS 26 CL

CB26 PRESSURE CONTROL SOLENOID 4

REVERSE 456 CL FD

26 CL/1234 CL FD

43

2-6 CLUTCH REG

REVERSE

COMP FD ACT FD LIM

42

DRIVE BRAKE DRV B EX

456 CL

2a

CSV2 ENABLE

#1 1234 CL DFLT FD

2b

456 CL

35 REV CL 1234 CL DRIVE 1-6

EX BACKFILL

26 CL

DRIVE 1-6

EXHAUST BACKFILL PRESSURE RELIEF VALVE 30

N.H. OFF

CBR1/CBR FD

LINE

LINE

456 CL FD

CBR1/456 CL FD

CBR1/456 CL FD

1234 CL DFLT FD

DRIVE 1-6

CSV2 LATCH PCS TCC

26

DRIVE EX

EX

EX EX

#4

N.L. OFF

ACT FD LIM

22

CLUTCH SELECT VALVE 2

PCS TCC

CBR1/C456 PRESSURE CONTROL SOLENOID 3

35 REV CL

LINE

DRIVE

12

EX

TCC PRESSURE CONTROL SOLENOID

35 REV CL

31

456 CL BOOST VALVE

ACT FEED LIMIT VALVE

ACT FD LIM

37

CBR1 FDBK

PS5 456 CLUTCH

39

EX

EX EX BF CBR1/456 CL FD

CBR1/C456 CL REG VALVE

26 CLUTCH

38

35 REV CLUTCH 1234 CLUTCH

PS5

DRIVE 1-6

ACT FD LIM

SOL 1

PCS CBR1/456 CL

21

CLUTCH SELECT VALVE 3 20

N.C.

PS3

PS1

1234 CL DFLT

1b

PS3

456 CL

EX

35R CL BOOST VALVE 40

35 CL REV FD

35 REV CL FDBK

CBR

N.C.

1

#5

PS1

35 CL REV FD

SHIFT SOL 2

35 CL REV FD

456 CL

3

CSV3 ENABLE

N.L. OFF

P

LINE ACT FD LIM

N.C. N.C.

OFF

DRIVE

1234 CLUTCH 35 REV CLUTCH LINE

D N R

MANUAL VALVE

456 CLUTCH

CONTROL SOLENOID VALVE ASSEMBLY

SHIFT SOL 1

M

CBR 1 CBR

COMP FD

COMP FEED

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

1234 CLUTCH 35 REV CLUTCH

N.C.

#3

35 REV CL

PCS 35 REV CL

ON

SOL 2

SOL 2

EX

45

35R SPL

DRIVE 1-6

ACT FD LIM

11

1a

#6

ON

1-2-3-4 CL REGULATOR VALVE 32 50

1234 CL BOOST VALVE

PCS 1234 CL

1234 CL DFLT ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

N.L.

PCS 1234 CL

PCS 1234 CL

COMPENSATOR FD REG VALVE

14

13

EX

29

EX BACKFILL

COMP FD

1234 CL FD

EX

33

EX

34

1234 CL FDBK

35

PS4 EX

SHTL 36

1234 CL

1234 CL

1234 CL

ACT FD LIM

LINE

N.H.

REG APPLY

REG APPLY

EX

C35R PRESSURE CONTROL SOLENOID 2

10

SOL 1

1234 CL

N.H.

9

TCC REGULATOR VALVE SHTL

EX

25

LINE PRESSURE CONTROL SOLENOID

EX

1c #7

PCS TCC

26 CL/1234 CL FD

EX BF

EX

46

47

35R FD ACT FD LIM

3-5 REV CL REGULATOR VALVE 48

ACT FD LIM

LINE

SOL 2

PCS LINE

2 2-6 CLUTCH RELEASES 2a CB26 Pressure Control Solenoid 4: The CB26 pressure control solenoid 4 is commanded OFF allowing PCS 26 clutch fluid from the 2-6 clutch regulator valve to exhaust. 26 clutch/1234 clutch feed fluid at the 2-6 clutch regulator valve passes through the valve and enters the PS3 fluid circuit. PS3 fluid is then routed to pressure switch 3 and opens the normally-closed switch. 2b 2-6 Clutch Regulator Valve: 2-6 clutch regulator valve spring force moves the valve to allow 26 clutch fluid from the 2-6 clutch to pass through the valve and enter the exhaust backfill fluid circuit. 2c 2-6 Clutch: 2-6 clutch spring force moves the 2-6 clutch piston to release the 2-6 clutch plates and forces 26 clutch fluid to exhaust from the center support. 26 clutch fluid is routed through the 2-6 clutch regulator valve where it enters the exhaust backfill fluid circuit and is routed through orifice #30 to the exhaust backfill pressure relief valve where excess pressure is exhausted.

4-5-6 CLUTCH ASSEMBLY

1d

ACT FD LIM

1 3-5 REVERSE CLUTCH APPLIES 1a C35R Pressure Control Solenoid 2: The C35R pressure control solenoid 2 is commanded ON allowing actuator feed fluid to enter the PCS 35 reverse clutch fluid circuit. PCS 35 reverse clutch fluid is routed through orifice #48 and then to the 3-5 reverse clutch regulator valve. PCS 35 reverse clutch fluid is also routed through orifice #40 and then to the 3-5 reverse clutch boost valve. 1b 3-5 Reverse Clutch Boost Valve: PCS 35 reverse clutch fluid pressure acts on a differential area moving the 3-5 reverse clutch boost valve against the 35 reverse clutch boost valve spring. 35 reverse clutch fluid passes through the valve and enters the 35 reverse clutch feedback circuit. As PCS 35 reverse clutch fluid pressure is increased to a given value, the 3-5 reverse clutch boost valve opens the 35 reverse clutch feedback circuit to exhaust. This results in the 3-5 reverse clutch regulator valve moving to the full feed position sending full 35 reverse clutch feed pressure (full line pressure) to the clutch. 1c 3-5 Reverse Clutch Regulator Valve: PCS 35 reverse clutch fluid moves the 3-5 reverse clutch regulator valve against 3-5 reverse clutch regulator valve spring force and 35 reverse clutch feedback fluid. This allows 35 reverse feed to pass through the valve and enter the 3-5 reverse clutch circuit. 35 reverse clutch fluid is then routed to the 3-5 reverse clutch, the 3-5 reverse boost valve and the clutch select valve 2. When the 3-5 reverse clutch regulator valve is in this position, PS1 fluid from the pressure switch 1 exhausts through the valve allowing the switch to close. 1d 3-5 Reverse Clutch: 35 reverse clutch fluid enters the 1-2-3-4 & 3-5 reverse clutch housing to move the piston against spring force combined with force from the compensator to apply the 3-5 reverse clutch plates.

CENTER SUPPORT ASSEMBLY

LINE

As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command OFF the normally-low CB26 pressure control solenoid 4. At the same time the C35R pressure control solenoid 2 is also commanded ON to regulate 3-5 clutch apply.

2c

REVERSE

3-5 REVERSE CLUTCH

1-2-3-4 CLUTCH

APPLIED

EX BF

APPLIED

LINE

OFF

COMP FD

ON

LINE

OFF

COMP FD

ON

PCS CBR1/456 CL

ON

ACT FD LIM

OFF

DRIVE

DRIVE RANGE – 3RD GEAR SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

ON

1234 CL FDBK COMP FD

COMP FD

LINE

LINE

64B

COMPLETE HYDRAULIC CIRCUIT Page 88

Figure 60

65

DRIVE RANGE – 4TH GEAR

DRIVE RANGE – 4TH GEAR (Torque Converter Clutch Applied)

(Torque Converter Clutch Applied) 3 1-2-3-4 CLUTCH APPLIED

2 INPUT INTERNAL GEAR DRIVING

8 OUTPUT CARRIER INTERNAL REAR GEAR (497) DRIVEN

7 OUTPUT CARRIER ASSEMBLY (68) DRIVING

6 4-5-6 CLUTCH APPLIED

➤

➤ ➤

➤

➤

➤

➤

➤

➤ ➤

➤ ➤

4 OUTPUT CARRIER REAR SUN GEAR (489) DRIVING

POWER TO DIFFERENTIAL ASSEMBLY

➤ ➤

➤

➤ ➤

5a OUTPUT CARRIER REAR OUTER PINION GEARS DRIVEN

➤

1 POWER FROM TORQUE CONVERTER (1)

➤

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

1-2-3-4 CLUTCH APPLIED

INPUT CARRIER ASSEMBLY (52) DRIVEN

1

➤

4-5-6 CLUTCH (w/OUTPUT CARRIER SHAFT AND DAMPENER) HUB ASSEMBLY (58)

INPUT SUN GEAR (53) HELD

APPLIED

LOW CLUTCH SPRAG

Power from Torque Converter

Input Internal Gear Driving

The input internal gear is located in the turbine shaft with 45-6 clutch assembly (56). The input internal gear drives the input carrier pinion gears which rotate around the stationary input sun gear (53), thus driving the input carrier assembly (52) in reduction. The input carrier is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51), which is rotating in the same direction as the turbine shaft but in reduction. 3

1-2-3-4 Clutch Applied

The 1-2-3-4 clutch is applied and holds the 1-2-3-4 clutch hub assembly (61), which is splined to the output carrier rear sun gear (489). 4

Output Carrier Rear Sun Gear Driving

The output carrier rear sun gear (489) is splined to the 1-23-4 clutch hub assembly (61) and rotates at the same speed and the same direction as the 1-2-3-4 and 3-5 reverse clutch assembly. 5/5a Output Carrier Rear Pinion Gears Driving

The output carrier rear sun gear drives the inner planetary pinion gears of the rear carrier assembly in the opposite direction of the sun gear. 6 4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

OUTPUT CARRIER REAR OUTER OUTPUT PINION CARRIER GEARS ASSEMBLY DRIVEN (68) DRIVING

1-2-3-4 CLUTCH HUB ASSEMBLY (61)

OUTPUT CARRIER REAR SUN GEAR (489) DRIVING

66

APPLIED

LOW & REV. CLUTCH

The turbine shaft with 4-5-6 clutch assembly (56) is driven by the converter turbine.

5 OUTPUT CARRIER REAR INNER PINION GEARS DRIVING

INPUT INTERNAL GEAR DRIVING

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH

As vehicle speed increases further, input signals from the transmission speed sensors (input and output), throttle position (TP) sensor, and other vehicle sensors are sent to the TCM. The TCM uses this information to determine the precise moment to shift the transmission into 4th gear. In 4th gear the planetary gearsets continue to operate in reduction at a gear ratio of approximately 1.152:1.

2

4-5-6 CLUTCH APPLIED

1-2-3-4 CLUTCH

Figure 61

4-5-6 Clutch Applied

The 4-5-6 clutch is located within the 4-5-6 (w/turbine shaft) clutch assembly (56). When applied, the clutch plates engage the 4-5-6 clutch (w/ output carrier shaft and dampener) hub assembly (58), which is now rotating at turbine speed. OUTPUT CARRIER INTERNAL REAR GEAR (497) DRIVEN

OUTPUT CARRIER REAR INNER PINION GEARS DRIVING

7 OUTPUT SHAFT ASSEMBLY (70)

Output Carrier Assembly Driving

The 4-5-6 clutch (w/ output carrier shaft and dampener) hub assembly (58) is splined to the output carrier assembly (68). The output carrier is now driving at turbine speed. 8

Output Carrier Internal Rear Gear Driven

With the output carrier rear sun gear driving and the output carrier driving, the rear inner pinion gears drive the rear outer pinion gears, which in turn drive the output carrier internal rear gear with a 4th gear ratio of approximately 1.152:1.

When the throttle is released in 4th gear, the vehicle is allowed to coast brake. Because the low clutch sprag assembly is not used in driving the vehicle during acceleration, there are no elements to overrun to allow the vehicle to coast freely. Therefore, engine compression slows the vehicle when the throttle is released until the transmission downshifts into 3rd gear. As vehicle speed increases, less torque multiplication is required to operate the engine efficiently. Therefore, it is desirable to shift to an overdrive gear ratio, or 5th gear.

66A

DRIVE RANGE - 4TH GEAR

DRIVE RANGE – 4TH GEAR (Torque Converter Clutch Applied)

(Torque Converter Clutch Applied)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

1-2-3-4 CLUTCH

APPLIED

1e

As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command OFF the normally-high C35R pressure control solenoid 2. At the same time the normally-low CBR1/ C456 pressure control solenoid 3 is commanded ON to regulate 4-5-6 clutch apply.

2d

M

COMP FD

PS5

5

EX

456 CL

23

DRV B

N.L. OFF

CBR1/CBR FD

EX

REVERSE 456 CL FD

41

REVERSE

2-6 GAIN

DRIVE BRAKE DRV B EX

44

DRIVE 1-6

PCS 26 CL

26 CL

ACT FD LIM CB26 PRESSURE CONTROL SOLENOID 4

PS3 EX

CBR1/456 clutch feed fluid passes through the clutch select valve 2 and enters the 456 clutch feed circuit. 456 clutch feed fluid is routed to the clutch select valve 3 where it passes through the valve and enters the 456 clutch fluid circuit. 456 clutch fluid is routed to the 4-5-6 clutch, the 2-6 clutch regulator gain valve and to the #3 ball check valve. 456 clutch fluid seats the #3 ball check valve against solenoid 2 fluid passage and directed into the CSV3 enable fluid circuit where it is routed through orifice #20 and to clutch select valve 3.

26 CL/1234 CL FD

2-6 CLUTCH REG

PCS TCC

COMP FD

456 CL 43

CSV2 ENABLE

#1 1234 CL DFLT FD

35 REV CL 1234 CL DRIVE 1-6

EX BACKFILL

42

1d

DRIVE 1-6

30

N.H. ON

1d Clutch Select Valve 2:

DRIVE 1-6

DRIVE BRAKE

1234 CL DFLT FD

EX LINE

EXHAUST BACKFILL PRESSURE RELIEF VALVE 26

DRIVE EX

EX

EX

DRIVE CBR1/456 CL FD

CBR1/456 CL FD LINE

LINE

ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

35 REV CL

LINE

CSV2 LATCH

1c EX

1a

#4

CBR1/CBR FD

REG APPLY to tcc cont valve

22

CLUTCH SELECT VALVE 2

456 CL FD

ON

35 REV CL

EX PCS TCC

PCS CBR1/456 CL

N.L.

12

PS5

456 CL BOOST VALVE TCC PRESSURE CONTROL SOLENOID

ACT FEED LIMIT VALVE

CBR1 FDBK

ACT FD LIM

37

456 CLUTCH

CBR1/C456 CL REG VALVE

31

PCS CBR1/456 clutch fluid pressure acts on a differential area moving the CBR1/456 clutch boost valve against the CBR1/456 clutch boost valve spring. CBR1/456 clutch fluid passes through the valve and enters the CBR1/456 clutch feedback circuit. As PCS CBR1/456 clutch fluid pressure is increased to a given value, the CBR1/456 clutch boost valve opens the CBR1/456 clutch feedback circuit to exhaust. This results in the CBR1/456 clutch regulator valve moving to the full feed position, sending full line pressure to the clutch.

21

CLUTCH SELECT VALVE 3

PCS 26 CL

20

N.C.

3

2b

PS3

1234 CL DFLT

40

35 CL REV FD

35 REV CL FDBK

CBR

N.C. N.C.

1

PS1

35 CL REV FD

35 CL REV FD

SHIFT SOL 2

456 clutch fluid enters the 4-5-6 clutch housing to move the piston against spring force, combined with force from the compensator to apply the 4-5-6 clutch plates.

#5

456 CL

EX

EX BF

PS1

456 CL

35R CL BOOST VALVE

CSV3 ENABLE

ACT FD LIM

PS3

1e 4-5-6 Clutch:

#3

35 REV CL

PCS 35 REV CL

ON

SOL 2

SOL 2

EX

45

3-5 REV CL REGULATOR VALVE

35R SPL

ACT FD LIM

33

32 50

1234 CL BOOST VALVE

1234 CL FD

29

PCS 1234 CL

REG APPLY to tcc cont valve

EX BACKFILL 1234 CL DFLT ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

N.L.

PCS 1234 CL

PCS 1234 CL

COMPENSATOR FD REG VALVE

14

13

EX

35

34

COMP FD

36

#6

1-2-3-4 CL REGULATOR VALVE

EX

SHTL

1234 CL

EX LINE

N.H. OFF

COMP FD

2c 3-5 Reverse Clutch Regulator Valve:

1234 CL

1234 CL

ACT FD LIM

REG APPLY

C35R PRESSURE CONTROL SOLENOID 2

10

REG APPLY

REG APPLY

REG APPLY

LINE

2a

3-5 reverse boost valve spring force moves the valve to allow 35 reverse clutch feed back fluid from the 3-5 reverse clutch regulator valve to enter the 35 reverse clutch fluid circuit and exhaust.

11

SHTL

SOL 1

N.H.

9

TCC REGULATOR VALVE

EX

1234 CL

LINE PRESSURE CONTROL SOLENOID

2b 3-5 Reverse Clutch Boost Valve:

DRIVE 1-6

25

EX

#7

EX

2c

PCS TCC

PCS TCC

26 CL/1234 CL FD

EX BF

PCS LINE

The C35R pressure control solenoid 2 is commanded OFF, allowing PCS 35 reverse clutch fluid from the 3-5 reverse clutch boost valve and the 3-5 reverse clutch regulator valve to exhaust through the solenoid.

46

47

48

ACT FD LIM

1234 CL FDBK

SOL 2

2 3-5 REVERSE CLUTCH RELEASES 2a C35R Pressure Control Solenoid 2:

COMPLETE HYDRAULIC CIRCUIT Page 90

35 REV CLUTCH 1234 CLUTCH

38

PCS CBR1/456 CL

1c 4-5-6 Clutch Boost Valve:

66B

DRIVE 1-6

PS5

ACT FD LIM

1b

EX

SOL 1 SOL 1

39

PCS CBR1/456 clutch fluid moves the CBR1/C456 clutch regulator valve against CBR1/C456 clutch regulator valve spring force to allow line fluid to pass through the valve an enter the CBR1/456 clutch feed circuit. CBR1/456 clutch feed is then routed to the 4-5-6 clutch boost valve and clutch select valve 2.

REVERSE

PS5

ACT FD LIM

OFF

LINE

LINE ACT FD LIM

N.C. N.C. SHIFT SOL 1

DRIVE

1234 CLUTCH 35 REV CLUTCH LINE

1b CBR1/C456 Clutch Regulator Valve:

3-5 reverse clutch spring force combined with force from the compensator move the 3-5 reverse clutch piston to release the 3-5 clutch plates and forces 35 reverse clutch fluid to exhaust from 12-3-4 and 3-5 reverse clutch housing. 35 reverse clutch fluid is then routed to the 3-5 reverse clutch regulator valve and exhausted.

P

MANUAL VALVE

456 CLUTCH

DRIVE

COMP FEED CONTROL SOLENOID VALVE ASSEMBLY

The CBR1/C456 pressure control solenoid 3 is commanded ON allowing actuator feed fluid to enter the PCS CBR1/456 clutch fluid circuit. PCS CBR1/456 clutch fluid is routed through orifice #39 to the CBR1/C456 clutch regulator valve and, through orifice #31 to the CBR1/C456 clutch boost valve.

2d 3-5 Reverse Clutch:

D N R

1234 CLUTCH 35 REV CLUTCH

1 4-5-6 CLUTCH APPLIES 1a CBR1/C456 Pressure Control Solenoid 3:

3-5 reverse clutch regulator valve spring force moves the valve to allow 35 reverse clutch fluid from the 3-5 reverse clutch to pass through the valve and enter the exhaust backfill fluid circuit. 35 reverse clutch fluid then enters the exhaust backfill fluid circuit and is routed through orifice #30 to the exhaust backfill pressure relief valve where excess pressure is exhausted.

4-5-6 CLUTCH ASSEMBLY

EX

APPLIED

PS4 EX

ON

35R FD ACT FD LIM

OFF

EX EX BF CBR1/456 CL FD

OFF

EX BF 26 CL

ON

LINE

ON

COMP FD

OFF

3-5 REVERSE CLUTCH

ON

1234 CL FDBK COMP FD

COMP FD

LINE

LINE

Figure 62

67

DRIVE RANGE – 5TH GEAR

DRIVE RANGE – 5TH GEAR (Torque Converter Clutch Applied)

(Torque Converter Clutch Applied) 2 INPUT INTERNAL GEAR DRIVING

3 3-5 REVERSE CLUTCH APPLIED

6 OUTPUT CARRIER ASSEMBLY (68) DRIVING

5 4-5-6 CLUTCH APPLIED

➤

7 OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

4 OUTPUT CARRIER FRONT SUN GEAR (487) DRIVING

➤

➤

➤

POWER TO DIFFERENTIAL ASSEMBLY

➤

1-2-3-4 AND 3-5 REVERSE CLUTCH ASSEMBLY (51)

3-5 REVERSE CLUTCH APPLIED

INPUT CARRIER ASSEMBLY (52) DRIVEN

INPUT INTERNAL GEAR DRIVING

LOW CLUTCH SPRAG

To maximize engine performance and fuel economy, a 5th gear is used to achieve an approximate ratio of 0.852:1 through the transmission gearset to the vehicle drive shaft. This allows the vehicle to maintain a given road speed with less engine output speed. 1

➤

2

Power from Torque Converter

Input Internal Gear Driving

The input internal gear is located in the turbine shaft with 45-6 clutch assembly (56). The input internal gear drives the input carrier pinion gears which rotate around the stationary input sun gear (53), thus driving the input carrier assembly (52) in reduction. The input carrier is splined to the 1-2-3-4 and 3-5 reverse clutch assembly (51), which is rotating in the same direction as the turbine shaft but in reduction. 3

4-5-6 CLUTCH APPLIED

LOW & REV. CLUTCH

The turbine shaft with 4-5-6 clutch assembly (56) is driven by the converter turbine.

➤

➤ ➤

➤

➤

➤

➤

➤ ➤

➤

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH APPLIED APPLIED

➤

➤

➤

1-2-3-4 CLUTCH

➤

1 POWER FROM TORQUE CONVERTER (1)

4-5-6 CLUTCH (w/OUTPUT CARRIER SHAFT AND DAMPENER) HUB ASSEMBLY (58)

The 3-5 reverse clutch is located in the 1-2-3-4 and 3-5 reverse clutch assembly (51). The 3-5 reverse clutch plates are splined to the 2-6 and 3-5 reverse clutch hub assembly (64) which now rotates at the same speed as the 1-2-3-4 and 3-5 reverse clutch assembly. 4

Output Carrier Front Sun Gear Driving

The 2-6 and 3-5 reverse clutch hub assembly (64) is splined to the output carrier front sun gear (487). The output carrier front sun gear is driving the output carrier front pinion gears. 5

INPUT SUN GEAR (53) HELD

3-5 Reverse Clutch Applied

4-5-6 Clutch Applied

The 4-5-6 clutch is located within the 4-5-6 (w/turbine shaft) clutch assembly (56). When applied, the clutch plates engage the 4-5-6 clutch (w/ output carrier shaft and dampener) hub assembly (58), which is now rotating at turbine speed. 6

Output Carrier Assembly Driving

The 4-5-6 clutch (w/ output carrier shaft and dampener) hub assembly (58) is splined to the output carrier assembly (68). The output carrier is now driving at turbine speed.

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

7

OUTPUT SHAFT ASSEMBLY (70)

Output Carrier Internal Front Gear Driven

With the output carrier front sun gear driving and the output carrier driving, the output carrier front pinion gears and the output carrier react as one unit to drive the output carrier internal front gear with a 5th gear overdrive ratio of approximately 0.852:1.

When the throttle is released in 5th Gear, the vehicle is allowed to coast brake. Because the low clutch sprag assembly is not used in driving the vehicle during acceleration, there are no elements to overrun to allow the vehicle to coast freely. Therefore, engine compression slows the vehicle when the throttle is released until the transmission downshifts into 4th gear.

2-6 AND 3-5 REVERSE CLUTCH HUB ASSEMBLY (64) DRIVING OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

OUTPUT CARRIER FRONT SUN GEAR (487) DRIVING

68

Figure 63

OUTPUT CARRIER ASSEMBLY (68) DRIVING

68A

DRIVE RANGE - 5TH GEAR

DRIVE RANGE – 5TH GEAR (Torque Converter Clutch Applied) SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

2d

APPLIED APPLIED

As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command ON the normally-high C35R pressure control solenoid 2. At the same time the normally-low C1234 pressure control solenoid 5 is commanded OFF.

4-5-6 CLUTCH ASSEMBLY

1e

M

COMP FD

EX

456 CL

23

DRV B

CBR1/CBR FD

EX

21

CLUTCH SELECT VALVE 3

PCS 26 CL

20

N.C.

N.L. OFF

REVERSE 456 CL FD

REVERSE

DRIVE 1-6

41

26 CL

2-6 GAIN

PS3 EX

44

PCS 26 CL

DRIVE BRAKE DRV B EX

26 CL/1234 CL FD

2-6 CLUTCH REG

PCS TCC

COMP FD

456 CL

ACT FD LIM

CSV2 ENABLE

#1 1234 CL DFLT FD

35 REV CL 1234 CL DRIVE 1-6

EX BACKFILL

N.H. ON

CB26 PRESSURE CONTROL SOLENOID 4

1d

DRIVE 1-6

EXHAUST BACKFILL PRESSURE RELIEF VALVE 30

43

DRIVE 1-6

CBR1/CBR FD

DRIVE BRAKE

1234 CL DFLT FD

EX 456 CL FD

CBR1/456 CL FD LINE

LINE

42

DRIVE EX

EX

EX

DRIVE

CSV2 LATCH

26

35 REV CL

LINE 35 REV CL

#4 CBR1/456 CL FD

LINE

ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

22

CLUTCH SELECT VALVE 2

EX

REG APPLY to tcc cont valve

3

1d Clutch Select Valve 2:

1b

PS3

1234 CL DFLT

40

35 CL REV FD

35 REV CL FDBK

CBR

N.C.

1e 3-5 Reverse Clutch:

1

N.C.

35 reverse clutch fluid enters the 1-2-3-4 & 3-5 reverse clutch housing to move the piston against spring force combined with force from the compensator to apply the 3-5 reverse clutch plates.

PS1

#5 35 CL REV FD

35 CL REV FD

SHIFT SOL 2

456 CL

EX BF

PS1

456 CL

35R CL BOOST VALVE

CSV3 ENABLE

ACT FD LIM

PS3

35 reverse clutch fluid passes through the clutch select valve 2 and enters the 1234 clutch default feed fluid circuit. 1234 clutch default feed fluid is then routed to the clutch select valve 3.

#3

35 REV CL

PCS 35 REV CL

ON

SOL 2

SOL 2

EX

45

3-5 REV CL REGULATOR VALVE

35R SPL 1234 CL

LINE PRESSURE CONTROL SOLENOID

2b 1-2-3-4 Clutch Regulator Valve:

N.H.

1-2-3-4 clutch regulator valve spring force moves the valve to allow 1234 clutch feed fluid from the 1-2-3-4 clutch to pass through the valve and enter the exhaust backfill fluid circuit. 1234 clutch fluid the enters the exhaust backfill fluid circuit and is routed through orifice # 30 to the exhaust backfill pressure relief valve where excess pressure is exhausted. Also, 1234 clutch regulator valve spring force moves the valve to allow 1234 clutch feed fluid to pass through the valve and enter the PS4 fluid circuit. PS4 fluid is then routed to pressure switch 4 and opens the normally-closed switch.

DRIVE 1-6

25

ACT FD LIM

1a

9

TCC REGULATOR VALVE 11

10

REG APPLY

REG APPLY

REG APPLY

SHTL

SOL 1

#7

EX

1c

PCS TCC

PCS TCC

26 CL/1234 CL FD

EX BF

PCS LINE

The C1234 pressure control solenoid 5 is commanded OFF, allowing PCS 1234 clutch fluid from the 1-2-3-4 clutch regulator valve and 1-2-3-4 clutch boost valve to exhaust.

46

47

48

ACT FD LIM

EX

SOL 2

2 1-2-3-4 CLUTCH RELEASES 2a C1234 Pressure Control Solenoid 5:

COMPLETE HYDRAULIC CIRCUIT Page 92

PCS CBR1/456 CL

PCS TCC

ON

12

PS5

EX

TCC PRESSURE CONTROL SOLENOID

ACT FEED LIMIT VALVE

31

456 CL BOOST VALVE

PCS 35 reverse clutch fluid moves the 3-5 reverse clutch regulator valve against 3-5 reverse clutch regulator valve spring force and 35 reverse clutch feedback fluid. This allows 35 reverse feed to pass through the valve and enter the 35 reverse clutch circuit. 35 reverse clutch fluid is then routed to the 3-5 reverse clutch, the 3-5 reverse boost valve and the clutch select valve 2. When the 3-5 reverse clutch regulator valve is in this position, PS1 fluid from the pressure switch 1 exhausts through the valve allowing the switch to close.

68B

37

CBR1 FDBK

ACT FD LIM

PCS CBR1/456 CL

456 CLUTCH

CBR1/C456 CL REG VALVE 39

1c 3-5 Reverse Clutch Regulator Valve:

2b

1-2-3-4 CL REGULATOR VALVE 32 50

1234 CL BOOST VALVE

PCS 1234 CL

1234 CL DFLT ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

PCS 1234 CL

PCS 1234 CL

N.L. OFF

COMPENSATOR FD REG VALVE

14

13

EX

29

COMP FD

1234 CL FD EX BACKFILL

EX

33

LINE

34

EX

35

#6

1234 CL FDBK

SHTL 36

1234 CL

EX

2a

LINE

ON

COMP FD

N.H.

2c

1234 CL

1234 CL

ACT FD LIM

REG APPLY

C35R PRESSURE CONTROL SOLENOID 2

REG APPLY to tcc cont valve

1-2-3-4 clutch spring force combined with force from the compensator moves the 1-2-3-4 clutch piston to release the clutch plates and force 1234 clutch fluid from the 1-2-3-4 and 3-5 reverse clutch housing. 1234 clutch fluid is routed through the 1-2-3-4 clutch regulator valve where it enters the exhaust backfill fluid circuit.

PS5

38

EX

LINE

ACT FD LIM

COMP FD

DRIVE 1-6

ACT FD LIM

SOL 1

OFF

1b 3-5 Reverse Clutch Boost Valve:

2d 1-2-3-4 Clutch:

REVERSE

SOL 1

SHIFT SOL 1

N.L.

LINE

LINE ACT FD LIM

N.C.

PCS 35 reverse clutch fluid pressure acts on a differential area moving the PCS 3-5 reverse clutch boost valve against the 3-5 reverse clutch boost valve spring. 35 reverse clutch fluid passes through the valve and enters the 35 reverse clutch feedback circuit. As PCS 35 reverse clutch fluid pressure is increased to a given value, the 3-5 reverse clutch boost valve opens the 35 reverse clutch feedback circuit to exhaust. This results in the 3-5 reverse clutch regulator valve moving to the full feed position sending full 35 reverse clutch feed pressure (full line pressure) to the clutch.

DRIVE

1234 CLUTCH 35 REV CLUTCH LINE

35 REV CLUTCH 1234 CLUTCH

The C35R pressure control solenoid 2 is commanded ON, allowing actuator feed fluid to enter the PCS 35 reverse clutch fluid circuit. PCS 35 reverse clutch fluid is routed through orifice #48 and then to the 3-5 reverse clutch regulator valve. PCS 35 reverse clutch fluid is also routed through orifice #40 and then to the 3-5 reverse clutch boost valve.

1-2-3-4 clutch boost valve spring force moves the valve to allow 1234 clutch feedback fluid from the 1-2-3-4 clutch regulator valve to enter the 1234 clutch circuit and exhaust.

P

MANUAL VALVE

456 CLUTCH

CONTROL SOLENOID VALVE ASSEMBLY

DRIVE

COMP FEED

1 3-5 REVERSE CLUTCH APPLIES 1a C35R Pressure Control Solenoid 2:

2c 1-2-3-4 Clutch Boost Valve:

D N R

1234 CLUTCH 35 REV CLUTCH

EX

ON

EX

ON

PS4 EX

OFF

35R FD ACT FD LIM

OFF

EX EX BF CBR1/456 CL FD

ON

EX BF 26 CL

OFF

(Torque Converter Clutch Applied) 3-5 REVERSE CLUTCH

1-2-3-4 CLUTCH

PS4 N.C.

4

PS4

1234 CL FDBK COMP FD

COMP FD

LINE

LINE

Figure 64

69

DRIVE RANGE – 6TH GEAR

DRIVE RANGE – 6TH GEAR (Torque Converter Clutch Applied)

(Torque Converter Clutch Applied) 1 POWER FROM TORQUE CONVERTER (1)

3 OUTPUT CARRIER ASSEMBLY (68) DRIVING

4 2-6 CLUTCH APPLIED

2 4-5-6 CLUTCH APPLIED

6 OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

5 OUTPUT CARRIER FRONT SUN GEAR (487) HELD

1-2-3-4 CLUTCH

LOW & REV. CLUTCH

LOW CLUTCH SPRAG

APPLIED APPLIED

POWER TO DIFFERENTIAL ASSEMBLY

➤

➤

To maximize engine performance and fuel economy beyond 5th gear calibrations, a 6th gear is used to achieve an approximate ratio of 0.667:1 through the transmission gearset to the vehicle drive shaft. 1

Power from Torque Converter

The turbine shaft with 4-5-6 clutch assembly (56) is driven by the converter turbine.

➤

➤

➤

➤

➤

➤

➤

3-5 REV. 4-5-6 2-6 CLUTCH CLUTCH CLUTCH

2

➤

4-5-6 Clutch Applied

The 4-5-6 clutch is located within the 4-5-6 (w/turbine shaft) clutch assembly (56). When applied, the clutch plates engage the 4-5-6 clutch (w/ output carrier shaft and dampener) hub assembly (58), which is now rotating at turbine speed. 3

Output Carrier Assembly Driving

The 4-5-6 clutch (w/ output carrier shaft and dampener) hub assembly (58) is splined to the output carrier assembly (68). The output carrier is now driving at turbine speed. 4 2-6 AND 3-5 REVERSE CLUTCH HUB ASSEMBLY (64) HELD

4-5-6 CLUTCH APPLIED

4-5-6 CLUTCH (w/OUTPUT CARRIER SHAFT AND DAMPENER) HUB ASSEMBLY (58)

4-5-6 (w/TURBINE SHAFT) CLUTCH ASSEMBLY (56)

CENTER SUPPORT ASSEMBLY (67)

The 2-6 clutch, which is located within the center support assembly (67), is applied and holds the 2-6 and 3-5 reverse clutch hub assembly (64). 5

Output Carrier Front Sun Gear Held

The 2-6 and 3-5 reverse clutch hub assembly is splined to the output carrier front sun gear (487). Therefore, the output carrier front sun gear is held. 6

Output Carrier Internal Front Gear Driven

With the output carrier front sun gear held and the output carrier driving, the output carrier front pinion gears walk around the stationary front sun gear and drive the output carrier internal front gear in a 6th gear overdrive ratio of approximately 0.667:1.

OUTPUT SHAFT ASSEMBLY (70)

When the throttle is released in 6th Gear, the vehicle is allowed to coast brake. Because the low clutch sprag assembly is not used in driving the vehicle during acceleration, there are no elements to overrun to allow the vehicle to coast freely. Therefore, engine compression slows the vehicle when the throttle is released until the transmission downshifts into 5th gear.

2-6 CLUTCH APPLIED

OUTPUT CARRIER FRONT SUN GEAR (487) HELD

70

2-6 Clutch Applied

Figure 65

OUTPUT CARRIER ASSEMBLY (68) DRIVING

OUTPUT CARRIER INTERNAL FRONT GEAR (495) DRIVEN

70A

DRIVE RANGE - 6TH GEAR

DRIVE RANGE – 6TH GEAR (Torque Converter Clutch Applied)

(Torque Converter Clutch Applied)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG APPLIED APPLIED

35 REV CLUTCH LINE

EX

EX BACKFILL

N.H. ON

35 CL REV FD

40

CSV2 ENABLE

35 REV CL

DRIVE EX 1234 CL DFLT FD

CBR1/CBR FD

35 CL REV FD

35 REV CL FDBK PS1

N.C.

1

N.C.

2b

35R CL BOOST VALVE

CBR 456 CL

EX

PS1

EX BF

ACT FD LIM

PS3

#5 35 CL REV FD

SHIFT SOL 2

456 CL

3 PS3

The C35R pressure control solenoid 2 is commanded OFF, allowing PCS 35 reverse clutch fluid from the 3-5 reverse clutch boost valve and the 3-5 reverse clutch regulator valve to exhaust through the solenoid.

REVERSE 456 CL FD

20

1234 CL DFLT

N.C.

2 3-5 CLUTCH RELEASES 2a C35R Pressure Control Solenoid 2:

21

CLUTCH SELECT VALVE 3

1c

N.L. ON

26 clutch fluid from the 2-6 clutch regulator valve is routed through the center support and to the 2-6 clutch piston assembly. 26 clutch fluid pressure moves the piston against 2-6 clutch spring force to apply the 2-6 clutch plates.

41

CSV3 ENABLE

1d 2-6 Clutch:

DRIVE 1-6

2-6 GAIN

CB26 PRESSURE CONTROL SOLENOID 4

REVERSE

26 CL/1234 CL FD

PS3 EX

44

DRIVE BRAKE DRV B EX

43

2-6 CLUTCH REG

PCS 26 CL

DRV B

PCS TCC

42

EX BF 26 CL

ACT FD LIM

#1

456 CL

COMP FD

1a

23

1234 CL DFLT FD

30

1b

DRIVE 1-6

DRIVE 1-6

EXHAUST BACKFILL PRESSURE RELIEF VALVE 26

456 CL

CBR1/C456 PRESSURE CONTROL SOLENOID 3

CBR1/CBR FD

CBR1/456 CL FD LINE

LINE

LINE

ACT FD LIM

PCS 26 clutch fluid moves the 2-6 clutch regulator/gain valve assembly against the 2-6 clutch regulator valve spring force to allow 26 clutch/1234 clutch feed fluid to pass through the valve. 26 clutch/1234 clutch feed fluid is routed into the 26 clutch fluid circuit where it passes through orifice #41 and then to the spring end of the 2-6 clutch regulator valve, and to the 2-6 clutch within the center support.

EX

EX

CSV2 LATCH CBR1/456 CL FD

DRIVE 1-6

1c 2-6 Clutch Regulator Valve:

EX

LINE

#4

EX

REG APPLY to tcc cont valve

EX

ON

22

CLUTCH SELECT VALVE 2

PCS TCC PCS CBR1/456 CL

N.L.

12

EX

TCC PRESSURE CONTROL SOLENOID

456 CL FD

The 2-6 clutch regulator gain valve allows the gain (valve input to output pressure magnification factor) of the 2-6 clutch regulator valve to be different for a 1-2 shift verses a 5-6 shift. For a 5-6 shift PCS 26 clutch fluid pressure passes through the hollow valve and only acts on the 26 regulator valve area, resulting in the "low gain" pressure output.

PS5

456 CL BOOST VALVE

DRIVE

31

1b 2-6 Clutch Regulator Gain Valve:

35 REV CL

EX

37

CBR1 FDBK

ACT FEED LIMIT VALVE

PCS CBR1/456 CL

ACT FD LIM

CBR1/C456 CL REG VALVE 39

456 CLUTCH

PS5

38

EX EX BF CBR1/456 CL FD

LINE

COMP FD

DRIVE 1-6

ACT FD LIM

SOL 1 ACT FD LIM

OFF

The CB26 pressure control solenoid 4 is commanded ON, allowing actuator feed fluid to enter the PCS 26 clutch fluid circuit. PCS 26 fluid is routed through orifice #44 and then to the 2-6 clutch regulator gain valve.

P

LINE ACT FD LIM

N.C. SHIFT SOL 1

D N R

MANUAL VALVE

REVERSE

456 CLUTCH

DRIVE

COMP FD

COMP FEED CONTROL SOLENOID VALVE ASSEMBLY

M

CBR 1 CBR

1d

1234 CLUTCH 35 REV CLUTCH

1 2-6 CLUTCH APPLIES 1a CB26 Pressure Control Solenoid 4:

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

LINE

2d

2-6 CLUTCH ASSEMBLY

DRIVE

4-5-6 CLUTCH ASSEMBLY

26 CLUTCH

As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command ON the normally-low CB26 pressure control solenoid 4. At the same time the normally-high C35R pressure control solenoid 2 is commanded OFF.

26 CL

#3

35 REV CL

PCS 35 REV CL

ON

SOL 2

SOL 2 EX

45

#7

DRIVE 1-6

25

LINE PRESSURE CONTROL SOLENOID

N.H.

ACT FD LIM

2a

9

TCC REGULATOR VALVE 11

10

REG APPLY

REG APPLY

REG APPLY

SHTL

SOL 1

3-5 reverse boost valve spring force moves the valve to allow 35 reverse clutch feedback fluid from the 3-5 reverse clutch regulator valve to enter the 35 reverse clutch circuit and exhaust.

2c

PCS TCC

EX

EX BF

PCS LINE

2b 3-5 Reverse Clutch Boost Valve:

46

47

35R FD ACT FD LIM

3-5 REV CL REGULATOR VALVE 48

ACT FD LIM

EX

SOL 2

26 CL/1234 CL FD

ON

35R SPL

OFF

35 REV CLUTCH

ON

35 REV CL

OFF

26 CL

ON

1-2-3-4 CLUTCH

EX

OFF

3-5 REVERSE CLUTCH

2c 3-5 Reverse Clutch Regulator Valve:

70B

COMPLETE HYDRAULIC CIRCUIT Page 94

32 50

1234 CL BOOST VALVE

1234 CL DFLT ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

PCS 1234 CL

PCS 1234 CL

COMPENSATOR FD REG VALVE

14

13

EX

29

1234 CL FDBK

COMP FD

1234 CL FD EX BACKFILL

EX

33

LINE

34

EX

35

#6

1-2-3-4 CL REGULATOR VALVE

PS4 EX

36

1234 CL

EX LINE

SHTL

COMP FD

REG APPLY

N.H. OFF

1234 CL FDBK

3-5 reverse clutch spring force combined with force from the compensator move the 3-5 reverse clutch piston to release the 3-5 clutch plates and forces 35 reverse clutch fluid to exhaust from 1-2-3-4 and 3-5 reverse clutch housing. 35 reverse clutch fluid is then routed to the 3-5 reverse clutch regulator valve where it enters the exhaust backfill circuit.

1234 CL

ACT FD LIM

PCS 1234 CL

2d 3-5 Reverse Clutch:

C35R PRESSURE CONTROL SOLENOID 2

REG APPLY to tcc cont valve

3-5 reverse clutch regulator valve spring force moves the valve to allow 35 reverse clutch fluid from the 3-5 reverse clutch to pass through the valve and enter the exhaust backfill fluid circuit. 35 reverse clutch fluid then enters the exhaust backfill fluid circuit and is routed through orifice #30 to the exhaust backfill pressure relief valve where excess pressure is exhausted.

N.L. OFF

PS4 N.C.

4

PS4 COMP FD

COMP FD

LINE

LINE

Figure 66

71

DRIVE RANGE - 3RD GEAR DEFAULT 1d

(Torque Converter Clutch Released)

(Torque Converter Clutch Released)

3-5 REVERSE CLUTCH

1-2-3-4 CLUTCH

DRIVE RANGE – 3RD GEAR DEFAULT SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

CENTER SUPPORT ASSEMBLY

2d

OFF

2-6 CLUTCH ASSEMBLY

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

EX

DRIVE

EX

456 CL

23

CB26 PRESSURE CONTROL SOLENOID 4

N.L. OFF

CBR1/CBR FD

EX

REVERSE 456 CL FD

DRIVE BRAKE DRV B EX

PCS TCC

26 CL

2-6 GAIN

PCS 26 CL

41

PS3 EX

EX BF 26 CL

2-6 CLUTCH REG 44

REVERSE

26 CL/1234 CL FD

DRIVE 1-6

COMP FD ACT FD LIM

CSV2 ENABLE

DRIVE EX

EX

DRV B

456 CL 43

21

2 3-5 REVERSE CLUTCH APPLIED or APPLIES 2a C35R Pressure Control Solenoid 2: The normal state for the C35R pressure control solenoid 2 is ON, therefore PSC 35 reverse clutch fluid will still be routed to the 3-5 reverse clutch regulator valve and the 3-5 reverse clutch boost valve.

CLUTCH SELECT VALVE 3 20

1234 CL DFLT

PS3

2c

35 REV CL FDBK

1

N.C.

35 CL REV FD CBR

#5

PS1

35 CL REV FD

SHIFT SOL 2

#3

35 REV CL

PCS 35 REV CL

OFF

SOL 2

EX

SOL 2 45

3-5 REV CL REGULATOR VALVE

35R SPL

DRIVE 1-6

10

SOL 1

ACT FD LIM

11

EX

N.H.

REG APPLY

REG APPLY

1c

32 50

1234 CL BOOST VALVE 29

PCS 1234 CL

EX BACKFILL 1234 CL DFLT ACT FD LIM

C1234 PRESSURE CONTROL SOLENOID 5

PCS 1234 CL

N.L. OFF

COMPENSATOR FD REG VALVE

14

13

EX

2a

LINE

1234 CL FD

COMP FD

33

2c 3-5 Reverse Clutch Boost Valve: PCS 3-5 reverse clutch fluid pressure acts on a differential area moving the 3-5 reverse clutch boost valve against the 3-5 reverse clutch boost valve spring. 3-5 reverse clutch fluid passes through the valve and enters the 3-5 reverse clutch feedback circuit. As PCS 3-5 reverse clutch fluid pressure is increased to a given value, the 3-5 reverse clutch boost valve opens the 3-5 reverse clutch feedback circuit to exhaust. This results in the 3-5 reverse clutch regulator valve moving to the full feed position sending full 3-5 reverse clutch feed pressure (full line pressure) to the clutch.

EX

34

EX

35

1234 CL FDBK

36

1-2-3-4 CL REGULATOR VALVE

PS4 EX

LINE

SHTL

1234 CL

#6

ON

COMP FD

N.H.

1234 CL

1234 CL

ACT FD LIM

EX

C35R PRESSURE CONTROL SOLENOID 2

2b 3-5 Reverse Clutch Regulator Valve: PCS 3-5 reverse clutch fluid moves the 3-5 reverse clutch regulator valve against 3-5 reverse clutch regulator valve spring force and 3-5 reverse clutch feedback fluid. This allows 3-5 reverse feed to pass through the valve and enter the 3-5 reverse clutch circuit. 3-5 reverse clutch fluid is then routed to the 3-5 reverse clutch, the 3-5 reverse boost valve and the clutch select valve 2. When the 3-5 reverse clutch regulator valve is in this position, PS1 fluid from the pressure switch 1 exhausts through the valve, allowing the switch to close.

9

TCC REGULATOR VALVE SHTL

EX

1234 CL

25

1234 CL DFLT

#7

LINE PRESSURE CONTROL SOLENOID

PCS TCC

26 CL/1234 CL FD

2b

35R FD ACT FD LIM

46

47

EX BF

PCS LINE

1a

48

ACT FD LIM

456 CL

N.C.

EX

EX BF

PS1

456 CL

35R CL BOOST VALVE

CSV3 ENABLE

ACT FD LIM

PS3

40

1b Clutch Select Valve 3: Sol 2 fluid pressure no longer holds the clutch select valve 3 open. When the valve moves back to the closed position, it opens the 1234 clutch default fluid circuit, and 1234 default fluid is routed to the 1-2-3-4 clutch regulator valve.

1b

N.C.

3

APPLIED

1d 1-2-3-4 Clutch: With the 1-2-3-4 clutch regulator valve still held in the open position, the 1-2-3-4 clutch will stay applied.

#1 1234 CL DFLT FD

EX BACKFILL

N.H. ON

26 CL

35 REV CL 1234 CL DRIVE 1-6

LINE

30

42

APPLIED

DRIVE 1-6

EXHAUST BACKFILL PRESSURE RELIEF VALVE 26

ON

1c 1-2-3-4 Clutch Regulator Valve: With the absence of PCS 1234 clutch fluid, due to the default state of the C1234 pressure control solenoid 5, the 1-2-3-4 regulator valve would close from spring force. However, the 1234 clutch default fluid enters behind the 1-2-3-4 regulator shuttle valve and keeps the valve in the open position.

1234 CL DFLT FD

DRIVE BRAKE

DRIVE 1-6

LINE

LINE

456 CL FD

CBR1/456 CL FD

CBR1/456 CL FD

PCS CBR1/456 CL

EX

CSV2 LATCH

CBR1/CBR FD

CSV2 LATCH

ACT FD LIM

22

EX

#4

N.L. OFF

CBR1/C456 PRESSURE CONTROL SOLENOID 3

ON

CLUTCH SELECT VALVE 2

PCS TCC

PCS TCC

35 REV CL

LINE

DRIVE

12

PS5

EX

TCC PRESSURE CONTROL SOLENOID

35 REV CL

31

456 CL BOOST VALVE

ACT FEED LIMIT VALVE

ACT FD LIM

37

CBR1 FDBK

456 CLUTCH

PCS CBR1/456 CL

EX

39

26 CLUTCH

35 REV CLUTCH 1234 CLUTCH

PS5

CBR1/C456 CL REG VALVE

EX EX BF CBR1/456 CL FD

LINE

COMP FD

ACT FD LIM

38

OFF

1 1-2-3-4 CLUTCH STAYS APPLIED 1a Shift Solenoid 2: Shift solenoid 2 defaults to it's normally-closed state (OFF), and SOL 2 fluid exhausts through the solenoid.

DRIVE 1-6

ACT FD LIM

SOL 1

OFF

P

LINE ACT FD LIM

N.C. SHIFT SOL 1

DRIVE

1234 CLUTCH 35 REV CLUTCH LINE

D N R

OFF

If the transmission is in 1st, 2nd or 3rd gear during a transmission electrical component failure, the transmission will default to 3rd gear. All solenoids will default to their normal state. If the torque converter clutch was applied, it will release. This default action will enable the vehicle to be safely driven to a service center.

MANUAL VALVE

456 CLUTCH

CONTROL SOLENOID VALVE ASSEMBLY

LINE

COMP FD

COMP FEED

M

CBR 1 CBR

1234 CLUTCH 35 REV CLUTCH

REVERSE

4-5-6 CLUTCH ASSEMBLY

OFF

2d 3-5 Reverse Clutch: 3-5 reverse clutch fluid enters the 1-2-3-4 & 3-5 reverse clutch housing to move the piston against spring force combined with force from the compensator to apply the 3-5 reverse clutch plates.

1234 CL FDBK COMP FD

COMP FD

LINE

LINE

72

Figure 67

COMPLETE HYDRAULIC CIRCUIT Page 96

72A

DRIVE RANGE - 5TH GEAR DEFAULT

DRIVE RANGE – 5TH GEAR DEFAULT (Torque Converter Clutch Released)

(Torque Converter Clutch Released)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG

1d

CBR 1 CBR

The TCC pressure control solenoid will default to it's normal state, OFF. PCS TCC fluid will exhaust from the TCC control valve, and spring force will shuttle the valve to the off position. TCC apply fluid will then be routed to the cooler, and TCC release fluid will be routed to the torque converter for complete TCC release.

72B

COMPLETE HYDRAULIC CIRCUIT Page 98

EX

LINE

23

CBR1/CBR FD

EX

REVERSE 456 CL FD

PCS TCC

41

26 CL

2-6 GAIN

PS3 EX

EX BF 26 CL

44

PCS 26 CL

DRIVE BRAKE DRV B EX

26 CL/1234 CL FD

43

2-6 CLUTCH REG

REVERSE

COMP FD

ACT FD LIM

21

PCS 26 CL

20

PS3

1234 CL DFLT

1b

ACT FD LIM

PS3

456 CL EX

EX BF

35R CL BOOST VALVE 40

CSV3 ENABLE

3

PS1

35 CL REV FD

35 REV CL FDBK

CBR

N.C.

1

N.C.

CSV2 ENABLE

CLUTCH SELECT VALVE 3

N.C.

N.L. OFF

1e

PS1

#5

#3

456 CL

CB26 PRESSURE CONTROL SOLENOID 4

42

35 REV CL

DRV B

456 CL

2b

DRIVE EX DRIVE 1-6

#1 1234 CL DFLT FD

EX BACKFILL

N.H. ON

456 CL

30

26 CL

EXHAUST BACKFILL PRESSURE RELIEF VALVE 26

CBR1/CBR FD

DRIVE BRAKE

1234 CL DFLT FD

EX

CBR1/456 CL FD LINE

LINE

35 REV CL 1234 CL DRIVE 1-6

ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

EX

EX

DRIVE

35 REV CL

LINE

ACT FEED LIMIT VALVE

456 CLUTCH

ACT FD LIM

CSV2 LATCH CBR1/456 CL FD

35 CL REV FD

SHIFT SOL 2

35 REV CL

PCS 35 REV CL

OFF

SOL 2

SOL 2 EX

45

35R SPL

PCS TCC

DRIVE 1-6

ACT FD LIM

11

1a

10

SOL 1

1234 CL

N.H.

9

TCC REGULATOR VALVE SHTL

EX

25

LINE PRESSURE CONTROL SOLENOID

EX

#7

26 CL/1234 CL FD

EX BF

PCS LINE

1c

EX

46

47

35R FD ACT FD LIM

3-5 REV CL REGULATOR VALVE 48

ACT FD LIM

REG APPLY

REG APPLY

2b

1-2-3-4 CL REGULATOR VALVE 32 50

1234 CL BOOST VALVE 29

EX BACKFILL 1234 CL DFLT ACT FD LIM C1234 PRESSURE CONTROL SOLENOID 5

PCS 1234 CL

PCS 1234 CL

N.L. OFF

COMPENSATOR FD REG VALVE

14

13

EX

1234 CL FD

COMP FD

33

LINE

34

EX

35

EX

2a

SHTL

1234 CL FDBK

ON

36

1234 CL

#6 PS4 EX

N.H.

1234 CL

1234 CL

ACT FD LIM EX

C35R PRESSURE CONTROL SOLENOID 2

PCS 1234 CL

3 TORQUE CONVERTER CLUTCH RELEASES 3a TCC Pressure Control Solenoid:

#4

EX

PCS TCC

22

CLUTCH SELECT VALVE 2

456 CL FD

N.L. OFF

2b 2-6 CB26 Pressure Control Solenoid 4:

If the transmission was in 6th gear when an electrical condition commands a protection mode, the CB26 pressure control solenoid 4 defaults to the OFF position, allowing PCS 26 clutch fluid from the 2-6 clutch regulator valve, and the 2-6 clutch to exhaust.

DRIVE

PCS TCC

REG APP

12

PS5

EX

TCC PRESSURE CONTROL SOLENOID

LINE

If the transmission was in 4th gear when an electrical condition commands a protection mode, the C1234 pressure control solenoid 5 defaults to the OFF position, allowing PCS 1234 clutch fluid from the 1-2-3-4 clutch, the 1-2-3-4 clutch regulator valve and 1-2-3-4 clutch boost valve to exhaust.

26 CLUTCH

31

COMP FD

2 1-2-3-4 CLUTCH RELEASES or 2-6 CLUTCH RELEASES 2a C1234 Pressure Control Solenoid 5:

37

CBR1 FDBK

456 CL BOOST VALVE

1e Clutch Select Valve 3:

Once the clutch select valve 3 is moved to the ON position in 4th gear, it will remain in this position throughout the 5th gear default range, until the ignition has been turned OFF. When the ignition is OFF, fluid will exhaust from the valve, thus when the vehicle is restarted, the transmission will then be in the 3rd gear default range.

35 REV CLUTCH 1234 CLUTCH

3a

EX

39

PCS CBR1/456 CL

1d 3-5 Reverse Clutch:

35 reverse clutch fluid enters the 1-2-3-4 & 3-5 reverse clutch housing to move the piston against spring force combined with force from the compensator to apply the 3-5 reverse clutch plates.

PS5

DRIVE 1-6 38

CBR1/C456 CL REG VALVE

1c 3-5 Reverse Clutch Regulator Valve:

PCS 35 reverse clutch fluid moves the 3-5 reverse clutch regulator valve against 3-5 reverse clutch regulator valve spring force and 35 reverse clutch feedback fluid. This allows 35 reverse feed to pass through the valve and enter the 35 reverse clutch circuit. 35 reverse clutch fluid is then routed to the 3-5 reverse clutch, the 3-5 reverse boost valve and the clutch select valve 2. When the 3-5 reverse clutch regulator valve is in this position, PS1 fluid from the pressure switch 1 exhausts through the valve, allowing the switch to close.

DRIVE

SOL 1 SOL 1

TCC REL

3

P

LINE ACT FD LIM

EX EX BF CBR1/456 CL FD

CONV FD LIMIT

7

EX

TCC CONTROL VALVE

PCS 3-5 reverse clutch fluid pressure acts on a differential area moving the PCS 3-5 reverse clutch boost valve against the 3-5 reverse clutch boost valve spring. 3-5 reverse clutch fluid passes through the valve and enters the 35 reverse clutch feedback circuit. As PCS 35 reverse clutch fluid pressure is increased to a given value, the 3-5 reverse clutch boost valve opens the 35 reverse clutch feedback circuit to exhaust. This results in the 3-5 reverse clutch regulator valve moving to the full feed position sending full 35 reverse clutch feed pressure (full line pressure) to the clutch.

1234 CLUTCH 35 REV CLUTCH

N.C.

OFF

D N R

MANUAL VALVE

456 CLUTCH

LINE

SHIFT SOL 1

M

COMP FD

COMP FEED CONTROL SOLENOID VALVE ASSEMBLY

COOLER FD TCC APPLY

1b 3-5 Reverse Clutch Boost Valve:

LOW & REVERSE CLUTCH ASSEMBLY

26 CLUTCH

1234 CLUTCH 35 REV CLUTCH

1 3-5 REVERSE CLUTCH APPLIES 1a C35R Pressure Control Solenoid 2:

The C35R pressure control solenoid 2 defaults to ON, allowing actuator feed fluid to enter the PCS 35 reverse clutch fluid circuit. PCS 35 reverse clutch fluid is routed through orifice #48 and then to the 3-5 reverse clutch regulator valve. PCS 35 reverse clutch fluid is also routed through orifice #40 and then to the 3-5 reverse clutch boost valve.

2-6 CLUTCH ASSEMBLY

4-5-6 CLUTCH ASSEMBLY

DRIVE 1-6

If the transmission is in 4th, 5th or 6th gear during a transmission electrical component failure, the transmission will default to 5th gear. All solenoids will default to their normal state. If the torque converter clutch was applied, it will release. The transmission will stay in 5th gear default range until the ignition has been turned off or the transmission has been shifted into Reverse. When the vehicle is restarted and shifted back into Drive, the transmission will then operate in the 3rd gear default range. This default action will enable the vehicle to be safely driven to a service center.

REVERSE

APPLIED APPLIED

LINE

ON

COMP FD

ON

LINE

OFF

ACT FD LIM

OFF

CENTER SUPPORT ASSEMBLY

PCS CBR1/456 CL

OFF

1-2-3-4 CLUTCH

ACT FD LIM

OFF

3-5 REVERSE CLUTCH

PS4 N.C.

4

PS4

1234 CL FDBK COMP FD LINE

Figure 68

COMP FD LINE

73

OPERATING CONDITIONS RANGE REFERENCE CHART 1 RANGE

GEAR

SHIFT SOL 1

SHIFT SOL 2

1-2-3-4 CL PC SOL 5 N.L.

2-6 CL PC SOL 4 N.L.

3-5 REV CL PC SOL 2 N.H.

LOW REV 4-5-6 CL PC SOL 3 N.H.

PARK

P

ON

ON

OFF

OFF

OFF

ON

REV

R

ON

OFF

OFF

OFF

ON

ON

NEU

N

ON

ON

OFF

OFF

OFF

ON

1st Braking

ON

ON

ON

OFF

OFF

ON

APPLIED

1st

OFF

ON

ON

OFF

OFF

OFF

APPLIED

2nd

OFF

ON

ON

ON

OFF

OFF

APPLIED

3rd

OFF

ON

ON

OFF

ON

OFF

APPLIED

4th

OFF

ON

ON

OFF

OFF

ON

APPLIED

5th

OFF

ON

OFF

OFF

ON

ON

6th

OFF

ON

OFF

ON

OFF

ON

1-2-3-4 CLUTCH

2 3-5 REV. CLUTCH

3

4

5

6

4-5-6 CLUTCH

2-6 CLUTCH

LOW & REV. CLUTCH

LOW CLUTCH SPRAG

APPLIED* APPLIED

APPLIED APPLIED* APPLIED

HOLDING HOLDING

APPLIED APPLIED

D APPLIED APPLIED

APPLIED APPLIED

APPLIED

NOTE: FOR SHIFT SOLENOIDS 1 AND 2, "ON" = SOLENOID ENERGIZED (PRESSURIZED), "OFF" = SOLENOID DE-ENERGIZED (NO PRESSURE). NOTE: FOR PRESSURE CONTROL (PC) SOLENOIDS, "ON" = PRESSURIZED, "OFF" = NO PRESSURE.

* = APPLIED WITH NO LOAD.

EXPECTED OPERATING CONDITION IF COMPONENT IN COLUMN NUMBER IS INOPERATIVE: COLUMN #

CONDITION

1

NO 1ST, 2ND, 3RD OR 4TH GEARS.

2

NO 3RD, 5TH OR REVERSE GEARS.

3

NO 4TH, 5TH OR 6TH GEARS.

4

NO 2ND OR 6TH GEARS.

5

NO REVERSE OR ENGINE BRAKING IN 1ST GEAR.

6

NO 1ST GEAR.

Electrical failure of any shift solenoid or pressure control solenoid will result in a default to the transmission protection mode. If the transmission is in 1st, 2nd or 3rd gear during an electrical failure, the transmission will default to 3rd gear. If the transmission is in 4th, 5th or 6th gear when an electrical failure occurs, the transmission will default to 5th gear.

Mechanical failure within a shift solenoid or pressure control solenoid will again result with the transmission going into a protection mode. Depending on the vehicle speed, transmission range, the component and which position it is stuck in, the transmission will default to the optimum gear to allow safe operation.

Refer to the model specific service manual for specific codes and defaults.

74

Figure 69

78A

COMPLETE HYDRAULIC CIRCUITS The hydraulic circuitry of the Hydra-matic 6 Speed RWD transmission is better understood when fluid flow can be related to the specific components in which the fluid travels. In the Power Flow section, a simplified hydraulic schematic was given to show what hydraulically occurs in a specific gear range. The purpose was to isolate the hydraulics used in each gear range in order to provide the user with a basic understanding of the hydraulic system. In contrast, this section shows a complete hydraulic schematic with fluid passages active in the appropriate component for each gear range. This is accomplished using two opposing foldout pages that are separated by a half page of supporting information. The left side foldout contains the complete color coded hydraulic circuit used in that gear range along with the relative location of valves, ball check valves and orifices within specific components. A broken line is also used to separate

components such as the pump, control valve bodies, channel plate and case to assist the user when following the hydraulic circuits as they pass between them. The half page of information facing this foldout lists possible conditions and component diagnostic tips. Always refer to the appropriate vehicle platform service manual when diagnosing specific concerns. The right side foldout shows a two-dimensional line drawing of the fluid passages within each component. The active fluid passages for each gear range are appropriately colored to correspond with the hydraulic schematic used for that range. The half page of information facing this foldout identifies the various fluid circuits with numbers that correspond to the circuit numbers used on the foldout page. For a more complete understanding of the different hydraulic systems used in a specific gear range, refer to the Hydraulic Control Components section and/or Power Flow section.

PASSAGE A IS LOCATED IN THE FLUID PUMP BODY (LIGHT GREY AREA) PASSAGE B IS LOCATED IN THE LOWER CONTROL VALVE BODY (LIGHT BLUE AREA) PASSAGE C IS LOCATED IN THE UPPER CONTROL VALVE BODY (LIGHT RED AREA) PASSAGE D IS LOCATED ON THE SPACER PLATE (DASHED LINE) PASSAGE E IS LOCATED IN THE CONTROL SOLENOID (W/BODY AND TCM) VALVE ASSEMBLY (YELLOW AREA) PASSAGE F IS LOCATED IN THE CASE (WHITE AREA)

FLUID FLOW SCHEMATIC — (FOLDOUT) A

FLUID FLOW THROUGH COMPONENTS (FOLDOUT)

B

C

RK g) PA nnin Ru

e gin (En

456 CL LUBE

LUBE

456 CLUTCH BOOST VALVE

26 CL

26 CL

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

➤

CBR1 FDBK

LUBE

CBR1/C456 CLU REG VALVE

CBR1/456 CL FD

ON

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

N.L. OFF

SHIFT SOL 2

N.L.

ON

PS5

LINE

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

37

12

51

F E

47

30

46

15

14 21

51

46

50

34

30

53

9

46

52

C

24

29

12

52

2

50

29 52

34 52 31 51

44

31

52 34

34 13

14 52

2

51 51

#1

43 31 51 48 51 50 2 21 51

2

➤ FRONT

➤

➤

FRONT

FRONT

51

45 51

52

35

12 43

48 51 52

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

42

34

31 33 13 51 22 20

24 54 28 30 51 34 33

51 22

45 18

12

34 44

52

28b/29b

34k 28a/29a

52

48

37c

12a 50

13d

12

48

21d

50f

50g 47a 48b

44a 36a

37

2d

31

21e

32b 13e

12c

42

37b/53b

34g 31a

31b

21c 34l 35a

51

47b 34h 50e

42

12e 12d

29e

43a

2

44b 12f

51

54a

12b

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

44

37a/53a 44c

9b

40

50d

29d 30b/54b 30a 29c

34c 31c

47

32 52 52 52 2

47

25a/44e 34i 44d

42a 46a 20

11d

45b

45a

38a

32

24e

26 34

37d

25b/44f

43

46b

24a

21a

21

44

41a

25c

34a

14a

50 23

45

52 31 52

36

15a

18a

19b 19c 34f

34j

12 12

29

54 21

43 13 12

41

16a

13b

47

37 18

37e

38b

34b

24d

50b 50c

12g

19a

13a 2c

51

29

11e/50a

33

13c

50 34

52 9

25d

15b

45

36

39a 12h

12i

14b

24b

45

38

14

39c

35

26a 40a

34d

39b

17d 27b

50

17b 2b

17a

37 52 39 37

44

19 46 19

35 52

52

Figure 83

16 52 52

34 14 23 51 20 21 51 28

34 12

12

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

13

51

51 47

#4

11

51b

24c

52 52

41

25

34

27a

26b 11

10c

12

40

15

18 19

11b 11c 51a 49a

14c 38c

52

52

2

11a

10a

38d 10b

50

13

52 52

52

12

2 52

17

52

52

17c

38e

21b

39

12 49

9

34e

25 52 38

52

12

52

12

32 52

Figure 82

18

34

12

13

40 34

9

52 52

20 52 20 52 52

#5

52

21

24

2

2

52 21 52 29

53

32

52

52

2a

10

38f

51

24

51

42 52 52

31 48 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 52

52 52

52 30

52 51 52

51

52

34

52

52

12

52 52

51

41 38

44

51

51

12 39

#3

13

16

52 13 52

40

52 52 2 52

16 38

44

51

51

34 24 50

49

52 19

42

46

34

51

17 #2 12

41 15

14 15 51

52 12

52

19

9

➤

K G

34 24

9a

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

51

51

2

14

#7 29

B

30b

PS5

CB26 PRESSURE CONTROL SOLENOID 4

J

➤ FRONT

EX

CSV2 LATCH PS5 ACT FD LIM

PCS 35 REV CL

12e

51 54b

40

38

50 51

(36) TR ENTS (40) ANSMI ( ) TR S (203 ANSM SION FLU I (213) CHECK VA SSION FLU ID LEVEL (214) TRANSM LVE RETAI ID PRES HOLE PLU I (230) BRASS ORSSION FLU NER AN SURE TES G D T TR (232) ANSM IFICE IN ID PUMP BALL AS PLUG IS SE (233) ORIFICE SION VE RT SCREEN SEMBLY SLE NT ASSE (306) ORIFICE EVE ASSE MBLY MBLY CONT CUP PLU (#1 ROL G (308) , 2, 3, VALVE BO TCC 4, 5, 6, DY BA (312) PWM 7, 8, LL PRES SOLEN 9, 10, CHEC 11, K VA SU FILTER RE CONT OID VALVE 12 LVE ASSE ROL FILTER 86 MBLY SOLEN AS B OID VA SEMBLY LVE

24 52 52 27

51

25

26

52

45

45

52

FRONT

2d

34l

32a

43b

43a

35a

2e

46b

32b

46a

12f

12d

PCS 26 CL

ACT FD LIM

SOL 2

ACT FD LIM

PCS TCC

PS3

PS1 ACT FD LIM ACT FD LIM

PCS LINE

PS4 SHIFT SOL 1

N.L.

50

25

ON

5

CASE (7) (Upper Valve Body Side)

52

17

52 21

38

52 37

52

COMP

PS3 LINE

2c

9

51

51

50 52 50

#6

A

EX

42a 41a

PRESSURE SWITCH 5 NORMALLY CLOSED

12

51

51

44

➤

CONTROL SOLENOID VALVE ASSEMBLY (314)

CBR 1

28a 29a

ACT FD LIM

3

52

INDICATES BOLT HOLES

52

27

29b

47b

35 CL REV FD

PRESSURE SWITCH 3 NORMALLY CLOSED

39

11

51c

29c

ACT FD LIM

1

24

52

29d

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

11

24

51

31a

ACT FD LIM

4

1

2

14

27 51 26

52

47a

1234 CL DFLT ACT FD LIM

PRESSURE SWITCH 4 NORMALLY CLOSED

➤

➤

10 14 11 26 49

51

51

17

52

52 51

17a 31c 31b

29e

29

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34 2

52 10

39

#2

CBR

1234 CL DFLT

31

21

PCS 26 CL

PCS 1234 CL PCS LINE PCS TCC

FILTER PLATE ASSEMBLY (311)

ACT FD LIM

24e

36

ACT FD LIM

49a

39

28b

CBR1/CBR FD

LINE

24d

FLUID PAN (29)

9

34 38

49

13b

EX

9

FLUID PUMP COVER (219) (Case Side)

52

48b

PS3 PS1 LINE PCS 35 REV CL

ACT FD LIM

24a 24b 24c

LINE

SOL 1

SUCTION

COMP FD 1234 CL

FLUID FILTER ASSEMBLY (26)

EX

EX

EX

LINE

MANUAL VALVE

10c

PCS LINE

LINE

38

38

38

10

52

➤

SOL 1 REG APPLY PS4 REG APPLY

38

9a 9b

CSV2 LATCH

DRIVE

11 2b

9 2

9

2

11

49

49

PS1

SOL 1

17b

DRIVE

14

26

26 11

10

22

EX M

35 CL REV FD

R N D

14

2 34

48a

16a

30

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW.

17

13c

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

CLUTCH SELECT VALVE 2

P

REVERSE

EX

EX

17c

10b

REVERSE

CBR EX

REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

DRIVE 1-6

REG APP

10

17d 10a

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

SOL 1

38a

LINE

COMP FD

38b

40a

10

– EXHAUST FLUID NOT SHOWN.

9

13a 13d 13e 30a

CBR

SHTL TCC REGULATOR VALVE

38c

35 REV CL

41

40

38d 38f

LUBE 456 CL

37

REVERSE 456 CL

DRIVE 1-6

PCS TCC

38e

46

– DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST. 38

PCS CBR1/456 CL

11c

9

11 14

NOTE:

48

SOL 1 35 REV CL

14

ISOLATOR VALVE

52 10 52 52 49

1

45b

2a

5

49

52 52

#4

45a

13

PCS LINE

ACT FD LIM

ACT FD LIM 12

456 CL CSV3 ENABLE

35 CL REV FD

11b

FLUID PUMP COVER (219)

52 10

LINE

12c

19b

34k

19a

34g

34a

34e

34i

34j

34h

19c

20 12a

34b

18a

42

12b

35 REV FD

34f

34d

34c

21a

37e

DRIVE 1-6

37d

37c

53b

54a

21d

21e

44b

44a

37b

36a

DRV B 35 REV CL ACT FD LIM ACT FD LIM COMPENSATOR FD REG VALVE

11d 11a

EXH

23

456 CL

ACT FD LIM

50a

456 CL #3

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50b

26 11e

46

DRIVE 1-6

PCS TCC

LINE DECREASE

25

DRIVE 1-6

➤

50c

EX

47 34

COMP FD LINE EX

50d

37a 53a

25a

25b

25c

12h

12g

12i

44c

44e

44f

44d

51b

15a

27a

26b

51a

26a

14a

14c

14b

27b

25d

15b

50f 50e

EX BF

#7

EX

EX

43

52

34

2

26

52

52

9

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

DRV B

PCS 1234 CL

LUBE

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

TCC CONTROL VALVE

REG APPLY

#5

#1

32

COMP FD

CONV FD LIMIT

3

33

50h 50g

EX BF

LINE

PRESSURE REGULATOR VALVE

2

LINE

45

21c

35R SPL

50

LOWER CONTROL VALVE BODY (307)

39a

21b

1234 CL

EX BF EX BF

EX BF

CASE (7)

➤

35 REV CL FDBK

#6

GASKET

39b

29 35

26 14 11

–

ACT FEED LIMIT VALVE

52 7

52 2

9

9

5

6 5 11 34 26 14

11 8

38

2

2

1

52 52 7 34

49

CBR1/456 CL FD DRIVE 1-6 PS1

456 CL

35 REV CL FDBK

GASKET SPACER PLATE (305) 39c

LINE

ISOLATOR

EX BF

35R CLUTCH BOOST VALVE

26 CL

EX BF 456 CL

456 CL

35 REV CL 7

EXH

1

6

6

7

2 10

49 2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

PS1 26 CL/1234 CL FD

CONVERTER FEED LIMIT

LINE DRIVE 1-6 PS5 EX

5 51

7

7 1 52

2

PS3

35 REV CL

FRONT LUBE

7 51

52

52 38

EX BF EX BF

456 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

86

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

51 51 6 5

57

3

2

51 56

7

PCS 35 REV CL CBR1 FDBK

EX BF

2a

PS3 EX

EX BF EX BF

LUBE

6

2-6 CLUTCH REG

EX

PS1 EX

26 CL

EX

4

2 2a

3

5

1

51

10 56

8

EX

EX

PS3

EX BF EX BF

CONV FD

6 5

PCS CBR1/456 CL EX BF

57

5

5 4 2

51

8

EXH

52 2

52

6

2

3

5 4

PCS CBR1/456 CL PCS 26 CL 456 CL

26 CL/1234 CL FD EX BF

3-5 REV CLU REGULATOR VALVE

35 REV CL ACT FD LIM

EX EX BF

1234 CL FDBK

EX

35 REV FD PCS 35 REV CL 35 REV CL FDBK

1234 CLUTCH BOOSTVALVE

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

EX BF

1234 CL

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

2

55

2

52

52

5

52

55

55 55 6

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

52 55

57 52

52

➤

456 CL LUBE CASE (7) UPPER CONTROL VALVE BODY (304)

COOLER

LUBE

COMP FD

(Engine Running)

55

ns p sure mp ou tra pum Preses pu to thWe hen mand ulat rdingents. the defrom accoirem ceeds, fluidr requut ex sure lato outp e presre regu of linpressu the

FRONT

COMP FD

TCC APPLY

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

49

2-6 CLUTCH ASSEMBLY (450-457)

➤

4-5-6 CLUTCH ASSEMBLY (431-443)

➤

3-5 REVERSE CLUTCH

FLUID PRESSURE TEST PLUG (40)

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

TORQUE CONVERTER ASSEMBLY (1)

COOLER FEED

(P) Park l the e oi r in th leve fromwing: ctor sure follo gsele pres the the line ed to 218): Re) re Withsition, rect Valve( essu po p is di lator (line prion pum Regu tput miss

PARK

1-2-3-4 CLUTCH

➤

PARK

➤

(Engine Running)

32a 43b

50h 39

38

51c

48a

2e

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 87

➤

D

E

F

HALF PAGE TEXT AND LEGEND

COMPLETE ILLUSTRATED PARTS LIST

Figure 70

FOLDOUT ➤ 75

(Engine Running) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

EX

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 71

SHIFT SOL 1

N.L.

ON

LINE PRESSURE CONTROL SOLENOID

N.H.

1

C1234 PRESSURE CONTROL SOLENOID 5

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

N.L. OFF

PRESSURE SWITCH 3 NORMALLY CLOSED

3

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

46a

46b

2d

32a 32b

2e

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE EX PS3

PCS 35 REV CL

41a

LINE

2c

12f 12e 12d

51

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

35a

43a

34l

EX

42a

PCS 26 CL

PRESSURE SWITCH 1 NORMALLY CLOSED

ACT FD LIM

4

SOL 2

PRESSURE SWITCH 4 NORMALLY CLOSED

SOL 1

FILTER PLATE ASSEMBLY (311)

ACT FD LIM

PS4

FLUID PAN (29)

44

35 CL REV FD

LINE

FLUID FILTER ASSEMBLY (26)

47b

ACT FD LIM

PCS LINE

LINE

29b

21 28a 29a

ACT FD LIM

PS3

36

29c

ACT FD LIM

PCS TCC

24e

CBR 1

29d

ACT FD LIM

PCS 1234 CL PCS LINE PCS TCC

ACT FD LIM

49a

PS1

24d

51c 29e

47a

1234 CL DFLT ACT FD LIM

ACT FD LIM

1234 CL

1234 CL DFLT

31a

EX

PS3 PS1 LINE PCS 35 REV CL

ACT FD LIM

24a 24b 24c

#2

17a 31c 31b

28b

PCS 26 CL

LINE

ACT FD LIM ACT FD LIM

SUCTION

COMP FD

CSV2 LATCH

DRIVE CBR1/CBR FD

11 2b

EX

EX DRIVE

10c

35 REV CL

REVERSE

EX M

35 CL REV FD

R N D

REVERSE

P

SOL 1

EX

10b

PCS LINE

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

EX

17c 17d 10a

CLUTCH SELECT VALVE 2

REG APP

10 17b

40a

LUBE 456 CL

SOL 1

38a

LINE

COMP FD

38b

16a

22

DRIVE 1-6

SHTL TCC REGULATOR VALVE

38c

31 13b

CBR

LINE

38f

39 48b

PS1

DRIVE 1-6

PCS TCC

38e 38d

ISOLATOR VALVE

ACT FD LIM

ACT FD LIM REVERSE 35 CL REV FD EX DRV B

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SOL 1 35 REV CL

11c

9a 9b 48a

13c

2a

5

12b

12a

19b

19a

19c

34k

34i

34g

34h

34e 34j

CLUTCH SELECT VALVE 3

13

9

13a 13d 13e 30a

CBR

14

PCS LINE

26 CL

CBR1 FDBK

CBR1/456 CL FD

2-6 CLUTCH REG

EX BF

34a

18a

34b

34f

34c

34d

21a

21b

37e

53b

37c

37b

37a 53a

21d

21e

37d

DRIVE 1-6

48 40

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

41

PCS CBR1/456 CL

EXH

37

45b

CSV2 LATCH PS5 ACT FD LIM

11d 11a

DECREASE

38

45a

PS5

50a

12

456 CL

CBR EX

50b

26 11e

20

#4

CSV3 ENABLE

DRIVE 1-6

PCS TCC

LINE

42

LINE

35 CL REV FD

COMP FD

34

23

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e 50d

54a

DRV B

50f

EX BF

25

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

EX BF

36a

44a

44b

44c

43 44d

12h

12g

25a 12i

25b

25c

44e

44f

51b 25d

15a

14a

14b

15b

14c

27a

27b

26b

51a

32

#3

DRV B

50h 50g

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

LINE

33

LOWER CONTROL VALVE BODY (307)

39a

3

45

39b

29

2

50

#7

EX

39c

CONVERTER FEED LIMIT

GASKET

26a

SPACER PLATE (305)

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

EX

CONV FD LIMIT

7

456 CL 35 REV CL FDBK

ACT FD LIM

CASE (7)

456 CL

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

456 CL

26 CL/1234 CL FD 456 CL

35 REV CL

ISOLATOR

26 CL/1234 CL FD EX BF

26 CL

EX BF

PS1

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

EX BF EX BF

CONV FD

76

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

PCS 35 REV CL CBR1 FDBK

EX BF

2a

PS3 EX

EXH

EX BF EX BF

LUBE

6

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

EX

PS1 EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

1234 CL FDBK

EX

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

12c

PARK

PARK (Engine Running) The following conditions and component problems could happen in any gear range, and are only some of the possibilities recommended to diagnose hydraulic problems. Always refer to the appropriate vehicle platform service manual when diagnosing specific concerns.

HIGH LINE PRESSURE

• Pressure Regulator Valve (233), or Isolator Valve (236) - Stuck, damaged

• Pump Slide (212) - Stuck

• Line Pressure Control Solenoid - Loose connector - Commanded/failed LOW (ON) LOW LINE PRESSURE

• Pressure Regulator Valve (233), Pressure Regulator Valve Outer Spring (234), Pressure Regulator Valve Inner Spring (235) or Isolator Valve (236) - Stuck, damaged broken

• Fluid Pump Cover (219) - Cross channel leak at converter housing to Cover or cover to case

• Fluid Pump Seal (5) - Damaged

• Pump Valve Bores - Excessive valve clearance due to wear

• Upper Control Valve Body (321) - Cross channel leaks - Cross valve land leaks

• Lower Control Valve Body (351) - Cross channel leaks - Cross valve land leaks

• Gasket/Spacer Plate - Damaged - Missing · Line Pressure Control Solenoid - Commanded/failed HIGH (OFF)

• Actuator Feed Limit Valve (325), Spring (354) or Retainer (323) - Stuck, damaged, broken

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG ON

ON

OFF

*APPLIED WITH NO LOAD

OFF

OFF

ON

APPLIED*

76A

PARK (Engine Running) PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

76B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

PARK

(Engine Running)

52 55

57

5

2a

3

5

5

51 51 57

52

7 7

2

52 52 38

8

2

49

26

38

2

2

2

34

2

26 11 14

14 11

9

9

7

52 2

49

52

8

10

10 56

52

6 5 11 34 26 14

34 11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2

2 6

57

5

5 4

4 51

2

52

6

2

3

➤

2

5

52 55

2

52

52

6

FRONT

55

52

52

55

55

➤

52

➤

55

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

38

34

11

10

11

49

49

9a

9

2 17

38f

38

10

34 38

9

J

50

40

34 24

G

37

12

51

F

45

38

15

14 15 51

52 19

52

38

47

E

51

34

50

44

51

46

#7 9

30

46

34

30

53

9

46

52

51

C

24

29

12 52

52 50

29 52

34 52 31

31

14 52

52 34

34

B

48

51

51

51

44

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

52

21

52

#5

53

12

43

42a

24a

29e

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44c

11d 26

50b 50c 37d

44b 12f

24e

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 77

51

52

52 24

2

40

49

18

52

41

25

19

16

31 33 13 51 22 20

24 54 28 30 51 34 33

51 22

12

12 41 39 38

50

12 42

34

47

52 37 9 18

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

51

52 31 52 54 21 36

43 13

35

40 45

38

42

19 34 14 23 51 20 21 51 28

34

37 52 39 37

44

19 46

52 52

51

52 52

34

13

12 52

52

2

34 52

51

12

40

15

13

52 52

52

12

12 17

11

50

52 38

17

52

20 52 20 52 52

52

51

25 52

52 52 52

49

34

9

52

51

51

51

39

12

51

51

24

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 72

34a 46b

14a

21a

21 52 29

16a

41

46a 19b 9b 19c 34f 20

23

52

31 51

➤ 2

52 30

52 51

34 13

18a

34b

34j 52

24d

11e/50a

37e 41a

36

52 35

12g

19a

13a 2c 13b

44 50

52

52

52 52

19

29

#3 2

16

25d

15a

51

39a 12h

12i

15b

29

38b

13

34 24 42

46

17d 27b

33

13c

52 52 2 52

14 21

14b

24b

45

16

25 50

34d

39c

39b

26a 40a

2b

15

41

52 37 #6

17b

17a

45

51

51

#2

27a

50

51b

24c

52

52

11

10c

2

14

52 50 52 52 50

51

➤

24 52 52 27

51

25

26

12

11

52

27

FRONT

39

24

26b

FRONT

K

➤ FRONT

51

21

14

51a 49a

14c 38c

38

24

21b

52

14

27 51 26 17

52

52

2

11

49 39

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

52

11b 11c

10b

10

52

17

38d

52 52

9 11a

10a

38e

34e

52

2a

10

17c

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

52 47

12

52

50

51

48 47

32

43

48 52 52 52 2

51 52

12

51

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

REVERSE 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

DRIVE 1-6

R N D

M

SOL 1 SOL 1 REG APPLY PS4 REG APPLY

EX

LINE

MANUAL VALVE

SUCTION

COMP FD

24a 24b 24c

1234 CL PCS LINE

24d 49a 24e

36

78

SHIFT SOL 1

N.L.

ON

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

N.L. OFF

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

SHIFT SOL 2

N.L. OFF

PCS 35 REV CL

C35R PRESSURE CONTROL SOLENOID 2

N.H.

ON

EX PS3

41a

LINE

2c

12f 12e 12d

51

CB26 PRESSURE CONTROL SOLENOID 4

N.L. OFF

PS5 ACT FD LIM CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL 42a

PCS 26 CL

ACT FD LIM

ACT FD LIM

3

SOL 2

PRESSURE SWITCH 3 NORMALLY CLOSED

ACT FD LIM

PCS TCC

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

PS3

PS1

4

ACT FD LIM

PRESSURE SWITCH 4 NORMALLY CLOSED

PCS LINE

FILTER PLATE ASSEMBLY (311)

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46a

46b

2d

32a 32b

2e

44

ACT FD LIM

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 73

26 CL

LINE

PS5 43b

35a

EX

47b

ACT FD LIM

ACT FD LIM ACT FD LIM

FLUID PAN (29)

29b

21

ACT FD LIM

SOL 1

FLUID FILTER ASSEMBLY (26)

29c

ACT FD LIM

PCS 1234 CL PCS LINE PCS TCC

LINE

CBR 1

29d

47a

1234 CL DFLT ACT FD LIM

PS4

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

51c 29e

28a 29a

35 CL REV FD LINE

31a

EX

PS3 PS1 LINE PCS 35 REV CL

LINE 1234 CL DFLT

#2

17a 31c 31b

28b

PCS 26 CL

11 2b

CSV2 LATCH

DRIVE CBR1/CBR FD

10c

35 REV CL

EX

EX DRIVE

35 CL REV FD

P

REVERSE

EX

EX

17c

10b

16a

CLUTCH SELECT VALVE 2

REG APP

10 17b 17d 10a

LUBE 456 CL

SOL 1

38a

LINE

COMP FD

38b

31 13b

22

DRIVE 1-6

SHTL TCC REGULATOR VALVE

38c

40a

43a

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

EX

PCS TCC

38e

39 48b

13c

38d 38f

9a 9b 48a

CBR

LINE

11c

REVERSE

REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

SOL 1 35 REV CL

9

13a 13d 13e 30a

CBR

14

ISOLATOR VALVE

34l

40

2a

5

ACT FD LIM

48 45b

13

PCS LINE

12c

ACT FD LIM 12a

19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

21a

34c

34d

21b

37e

53b

37c

37b

53a 21d

37a

54a

37d

DRIVE 1-6

45a

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

41

PS1

EXH

37

PCS CBR1/456 CL

11d 11a

DECREASE

38

CSV2 LATCH PS5 ACT FD LIM

50a

12

456 CL

CBR EX

50b

26 11e

20

#4

CSV3 ENABLE

DRIVE 1-6

PCS TCC

LINE

42

LINE

35 CL REV FD

COMP FD

34

23

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e 50d

21e

DRV B

50f

EX BF

25

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

EX BF

36a

44a

44b

44c

44d

12h

12g

25a 12i

25b

25c

44e

44f

51b

15a

25d

14a

14b

15b

14c

27a

27b

26b

51a

26a

43

#3

DRV B

50h 50g

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

LINE 3

32

LOWER CONTROL VALVE BODY (307)

39a

2

33

39b

29

LINE

45

#7

EX

GASKET

50

EX

CONV FD LIMIT

39c

35 REV FD

35R SPL #5

#1

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK #6

SPACER PLATE (305)

CONVERTER FEED LIMIT

456 CL 35 REV CL FDBK

12b

CASE (7)

456 CL

GASKET

7

EXH

26 CL

CBR1 FDBK

CBR1/456 CL FD

CBR1/456 CL FD DRIVE 1-6 PS1

456 CL

26 CL/1234 CL FD 456 CL

CONV FD

PRESSURE REGULATOR VALVE

EX BF

EX BF

35 REV CL

ISOLATOR

2-6 CLUTCH REG

EX BF EX BF

PS1

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

26 CL/1234 CL FD EX BF

26 CL

EX

PS1 EX

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

1234 CL FDBK

EX

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

EX EX BF

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF

1234 CL

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

REVERSE NO REVERSE OR SLIPS IN REVERSE

• C35R Pressure Control Solenoid 2 - Commanded/failed LOW (ON) - Leaking

• Center Support (459) - Broken - Leaking at case

• Low and Reverse Clutch Piston (470) - Leaking - Jammed or cracked

• Clutch Select Valve 2 (352), Spring (353) Bore Plug (328) or Retainer (323) - Stuck - Missing

• Clutch Select Valve 3 (352), Spring (353) Bore Plug (328) or Retainer (323) - Stuck - Missing

• #5 Ball Check Valve - Stuck - Missing

• #2 Ball Check Valve - Stuck - Missing

• 3-5 Reverse Clutch Piston (421) - Leaking - Jammed or cracked

• 3-5 Reverse Clutch Piston Inner Seal (419) or Outer Seal (422) - Leaking - Missing

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG ON

OFF

OFF

OFF

ON

ON

APPLIED

APPLIED

78A

REVERSE PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

78B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

REVERSE

52 55

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FRONT

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29

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49

52 52

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49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

38

34

11

10

11

49

49

9a

9

2 17

38

10

34 38

9

39

11

12

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G

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#6

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#7 9

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51

C

24 52

52

52 50

29 52

34 52 31

31

14 52

2 52

52 34

34

B

31 51

48

51

51

51

44

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

52

21

52

#5

53

12

24a

29e

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 42

45b

51

48

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37c 40

45a

25b/44f

44c

11d 26

50b 50c 37d

44b 12f

24e

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 79

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2

40

12 49

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25

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31 33 13 51 22 20

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51

24

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 74

42a

14a

21a

21 52 29

43

46b

46a 19b 9b 19c 34f 20

23

52 30

52 51

34 13

16a

41

18a 34a

34b

34j 29

12

19a

13a 2c 13b

44 50

52

52

52 52

19

29

#3 2

16

24d

11e/50a

37e 41a

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38b

13

34 24 42

46

25d

15a

51

39a 12h

12i

15b

29

52 35

12g 13c

52 52 2 52

17d 27b

33

45

16

25 50

14b

24b

15

41

45

34d

39c

39b

26a 40a

17a

52 37

F

51

17b 2b

27a

50

51b

24c

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52

45

51

#2

2

14

52 50 52 52 50

11

10c

➤

27

FRONT

J

24

52

➤

24

26b

FRONT

K

➤ FRONT

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17

52

52 51

21

14

51a 49a

14c 38c

34

52

11b

21b

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14

27 51 26

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10 17

11c

2

11

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10a

10b

10

52

11a

38d

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9

17c

38e

34e

52

2a

10

38f

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47

12

52

50

51

48 47

32

43

48 52 52 52 2

51 52

12

51

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

NEUTRAL

(Engine Running) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

DRIVE 1-6

R N D

M

SOL 1

17b

SOL 1 REG APPLY PS4 REG APPLY

EX

LINE

MANUAL VALVE

SUCTION

COMP FD

24a 24b 24c

1234 CL PCS LINE

24d 49a 24e

36

80

SHIFT SOL 1

N.L.

ON

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

N.L. OFF

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

12f

PCS 35 REV CL

12e 12d

51

PS5 ACT FD LIM

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

EX

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL LINE

2c

PCS 26 CL

ACT FD LIM

3

ACT FD LIM

SOL 2

PRESSURE SWITCH 3 NORMALLY CLOSED

ACT FD LIM

PCS TCC

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

PS3

41a

ACT FD LIM

PS3

PS1

4

ACT FD LIM

PRESSURE SWITCH 4 NORMALLY CLOSED

PCS LINE

FILTER PLATE ASSEMBLY (311)

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46a

46b

2d

32a 32b

2e

42a

ACT FD LIM

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 75

26 CL

LINE

PS5 43b

35a

EX

44

ACT FD LIM

ACT FD LIM ACT FD LIM

FLUID PAN (29)

29b

47b

ACT FD LIM

SOL 1

FLUID FILTER ASSEMBLY (26)

29c

47a

PCS 1234 CL PCS LINE PCS TCC

LINE

CBR 1

29d

PS3 PS1 LINE PCS 35 REV CL

1234 CL DFLT ACT FD LIM

PS4

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

51c 29e

21

35 CL REV FD LINE

31a

EX

28a 29a

PCS 26 CL

LINE 1234 CL DFLT

#2

17a 31c 31b

28b

CBR1/CBR FD

11 2b

CSV2 LATCH

DRIVE

10c

35 REV CL

EX

EX DRIVE

35 CL REV FD

P

REVERSE

EX

EX

17c

10b

16a

CLUTCH SELECT VALVE 2

REG APP

10

17d 10a

LUBE 456 CL

SOL 1

38a

LINE

COMP FD

38b

31 13b

22

DRIVE 1-6

SHTL TCC REGULATOR VALVE

38c

40a

43a

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

EX

PCS TCC

38e

39 48b

13c

38d 38f

9a 9b 48a

CBR

LINE

11c

REVERSE

REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

SOL 1 35 REV CL

9

13a 13d 13e 30a

CBR

14

ISOLATOR VALVE

ACT FD LIM

40

2a

5

12c

48 45b

13

PCS LINE

34l

ACT FD LIM 12a

19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

37d

53b

37c

37b

21d

37a 53a

21e

37e

DRIVE 1-6

45a

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

41

PS1

EXH

37

PCS CBR1/456 CL

11d 11a

DECREASE

38

CSV2 LATCH PS5 ACT FD LIM

50a

12

456 CL

CBR EX

50b

26 11e

20

#4

CSV3 ENABLE

DRIVE 1-6

PCS TCC

LINE

42

LINE

35 CL REV FD

COMP FD

34

23

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e 50d

54a

DRV B

50f

EX BF

25

#3

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

50h 50g

EX BF

36a

44a

44b

44c

44d

12h

12g

25a 12i

25b

25c

44e

44f

51b 25d

15a

43

EX

14a

14b

15b

14c

27a

27b

26b

51a

26a

32

#7

DRV B

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

LINE 3

33

LOWER CONTROL VALVE BODY (307)

39a

2

45

39b

29

LINE

50

EX

CONV FD LIMIT

CONVERTER FEED LIMIT

GASKET

35 REV FD

35R SPL #5

#1

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK #6

SPACER PLATE (305) 39c

456 CL 35 REV CL FDBK

12b

CASE (7)

456 CL

GASKET

EXH

1

26 CL

CBR1 FDBK

EX BF

26 CL/1234 CL FD EX BF

CBR1/456 CL FD

CBR1/456 CL FD DRIVE 1-6 PS1

456 CL

26 CL/1234 CL FD 456 CL

CONV FD

PRESSURE REGULATOR VALVE

2-6 CLUTCH REG

26 CL

EX BF

PS1

FRONT LUBE

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

7

EX

EX BF EX BF

35 REV CL

ISOLATOR

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

PCS 35 REV CL CBR1 FDBK

EX BF

2a

PS3 EX

EXH

EX BF EX BF

LUBE

6

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

1234 CL FDBK

EX

EX

PS1 EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

EX EX BF

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF

1234 CL

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

NEUTRAL (Engine Running) FORWARD MOTION IN NEUTRAL

• Manual Valve (354) - Mis-positioned

• Clutch Select Valve 3 (352) - Stuck

• #3 Ball Check Valve - Stuck - Missing

• C35R Pressure Control Solenoid 2 - Commanded/failed LOW (ON) - Leaking

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG ON/

ON

OFF

*APPLIED WITH NO LOAD

OFF

OFF

ON

APPLIED*

80A

NEUTRAL (Engine Running) PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

80B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

NEUTRAL

(Engine Running)

52 57

➤

55 55

55

5 4

2a

3

5

5

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1

7

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7 7

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34 11

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1

5

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6 5

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3

2

1

51

2

2 6

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➤

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51

2

52

6

2

3

➤

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5

55

2

52

52

6 52

52

55

55

FRONT

52 52

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

38

34

11

10

11

49

49

9a

9

2 17

38

10

34 38

9

J

24

39

11

12

34 24

G

#6

37

12

51

15 38

15

14 15 51

52 47

E

51

14 21

52 19

38 34

50

44

51

46

29

9

30

46

34

30

53

9

46

52

51

C

24

29

12 52 52 51 52 50

29 34 52 31

52

31

2 52

52 34

34

51

B

31 48

51

51

51

44

A

#1

52

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

#5

53 21

52

12

24a

29e

9b

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 44c

42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44b 12f

11d

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 81

51

52

52 24

2

40

52

18

52

41

25

19

16

44

34 14 23 51 20 21 51 28 31 33 13 51 22 20

24 54 28 30 51 34 33

51 22

12

12 41 39 38

38

50

12 42

34

47

37 9 18

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

51

52 31 52 54 21 36

43 13

35

40 45

52

19

34

37 52 39 37

42

19 46

52 52

51

52 52

40

34

13

12

52

2

34 52

49

52

15

13

52 52

52

12

51

50

52 38

17

52

20 52 20 52 52

52

12 17

11

25

52 52 52

51

12

34

9

52

49

51

51

51

39

12

51

51

24

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 76

14a

21a

21 52 29

42a

19b 19c 34f 20

23

52 30

43

46b

24e

26

50b 50c 37d

46a

34 13

14 52

16a

41

18a 34a

34b

34j 52

24d

11e/50a

37e 41a

36

52 35

12g

19a

13a 2c 13b

44 50

52

52

52 52

19 #7

#3 2

16

25d

15a

51

39a 12h

12i

15b

29

38b

13

34 24 42

46

17d 27b

33

13c

52 52 2 52

16

25 50

14b

24b

45

41

45

34d

39c

39b

26a 40a

17a

52 37

F

51

17b 2b

27a

50

51b

24c

52

52

45

51

#2

2

14

52

11

10c

➤

24 50 51 25 26 52 40 52 27

50 52 52 50

51

52

27

FRONT

24

26b

➤

FRONT

38

17

52

52 51

21

FRONT

K

➤

39

14

51a 49a

14c 38c

34

52

11b

21b

52

14

27 51 26

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 49 14 52 26 51 51 39 52 52 52 38 27 52 17 10 17

11c

2

11

49

10a

10b

10

52

11a

38d

52 52

9

17c

38e

34e

52

2a

10

38f

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

52 47

12

52

50

51

48 47

32

43

48 52 52 52 2

51 52

12

51

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

(Engine Braking) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH 4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

M

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

SUCTION

2b 24a 24b 24c

1234 CL PCS LINE

24d 49a 24e

36

82

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 77

42a

N.L.

ON

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

N.L. ON

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

EX LINE

2c

12f 12e 12d

51

PS5 ACT FD LIM

PCS 26 CL

ACT FD LIM

3

ACT FD LIM

SOL 2

PRESSURE SWITCH 3 NORMALLY CLOSED

ACT FD LIM

PCS TCC

ACT FD LIM

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

PS3

41a

ACT FD LIM

PS3

PS1

SHIFT SOL 1

PCS LINE

4

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46a

46b

2d

32a 32b

PCS 35 REV CL

44

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

EX

47b

ACT FD LIM

PRESSURE SWITCH 4 NORMALLY CLOSED

29b

21

ACT FD LIM

ACT FD LIM ACT FD LIM

FILTER PLATE ASSEMBLY (311)

29c

ACT FD LIM

SOL 1

FLUID PAN (29)

CBR 1

29d

47a

PCS 1234 CL PCS LINE PCS TCC

LINE

FLUID FILTER ASSEMBLY (26)

51c 29e

PS3 PS1 LINE PCS 35 REV CL

1234 CL DFLT ACT FD LIM

PS4

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

31a

EX

28a 29a

35 CL REV FD LINE

#2

17a 31c 31b

28b

PCS 26 CL

LINE 1234 CL DFLT

CSV2 LATCH

DRIVE CBR1/CBR FD

11

35 REV CL

EX

EX DRIVE

10c

COMP FD

2e

EX R N D

35 CL REV FD

P

SOL 1

EX

10b

CLUTCH SELECT VALVE 2

REVERSE

EX

17c 17b 17d 10a

16a

22

DRIVE 1-6

REG APP

10

EX

SOL 1

38a

LINE

COMP FD

38b

40a

35a

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SHTL TCC REGULATOR VALVE

38c

31 13b 13c

38d 38f

39 48b

CBR

DRIVE 1-6

PCS TCC

38e

9a 9b 48a

PS1

LINE

9

REVERSE

REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

SOL 1 35 REV CL

11c

LUBE 456 CL

43a

40 13a 13d 13e 30a

CBR

14

ISOLATOR VALVE

34l

48 45b

2a

5

ACT FD LIM

ACT FD LIM 12a

19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

37e

53b

37c

37b

53a 21d

37a

21e

37d

DRIVE 1-6

45a

13

PCS LINE

41

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

37

PCS CBR1/456 CL

EXH

38

CSV2 LATCH PS5 ACT FD LIM

50a

11d 11a

DECREASE

12

456 CL

CBR EX

50b

26 11e

20

#4

CSV3 ENABLE

DRIVE 1-6

PCS TCC

LINE

42

LINE

35 CL REV FD

COMP FD

34

23

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e 50d

54a

DRV B

50f

EX BF

25

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

EX BF

36a

44a

44b

44c

43 44d

12h

12i

12g

25b

25a 44e

25c 44f

51b

15a

25d

14a

14b

15b

14c

27a

27b

26b

51a

32

#3

DRV B

50h 50g

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

LINE 3

33

LOWER CONTROL VALVE BODY (307)

39a

2

45

39b

29

LINE

50

#7

EX

39c

CONVERTER FEED LIMIT

GASKET

26a

SPACER PLATE (305)

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

EX

CONV FD LIMIT

7

456 CL 35 REV CL FDBK

12b

CASE (7)

456 CL

456 CL

GASKET

EXH

26 CL

CBR1 FDBK

CBR1/456 CL FD

CBR1/456 CL FD DRIVE 1-6 PS1

PS1 26 CL/1234 CL FD

CONV FD

PRESSURE REGULATOR VALVE

456 CLUTCH BOOST VALVE

EX BF

35 REV CL

ISOLATOR

EX BF

EX BF EX BF

456 CL

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

2-6 CLUTCH REG

26 CL

PS1 EX

456 CL

26 CL/1234 CL FD EX BF

EX

PCS 26 CL

26 CL

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FDBK

1-2-3-4 CLUTCH REGULATOR VALVE

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

12c

DRIVE RANGE 1ST GEAR

DRIVE RANGE - 1ST GEAR (Engine Braking) LOSS OF DRIVE

• Fluid Pump (219) - Seized - Leaking

• 1-2-3-4 Clutch Piston (414) - Jammed or cracked - Leaking

• 1-2-3-4 Clutch Housing (427) - Passage plugged - Cracked

• 1-2-3-4 Clutch Piston Inner Seal (423) or Housing Seals (424 & 425) - Leaking

• 1-2-3-4 Clutch Regulator Valve (337) - Stuck

• #1 Ball Check Valve - Stuck - Missing

• C1234 Pressure Control Solenoid 5 - Commanded/failed LOW (OFF) - Leaking

• Low Clutch Sprag Assembly (467) - Not holding LOSS OF ENGINE BRAKING – 1ST GEAR

• #2 Ball Check Valve - Stuck - Missing

• Clutch Select Valve 2 (352) - Stuck

• #3 Ball Check Valve - Stuck - Missing

• Clutch Select Valve 3 (352) - Stuck

• Low and Reverse Clutch Piston (470) - Leaking - Jammed or cracked

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG ON

ON

ON

OFF

OFF

ON

APPLIED

APPLIED HOLDING

82A

DRIVE RANGE – 1ST GEAR (Engine Braking) PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

82B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 1ST GEAR

(Engine Braking)

52

➤

55 55

57

55

5 4

2a

3

5

5

51 51 57

52

7 7

2

34 8

38

8

2

49

26

38

2

2

2

34

2

26 11 14

14 11

9

9

6 5 11 34 26 14

52 2

49

7

➤

52

52

➤

10

10 56

52

➤

52

➤

11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2

2 6

57

5

➤

5 4

51

2

52

6

2

3

➤

2

5

55

2

52

52

6 52

52

55

55

FRONT

52 52

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

38

34

11

10

11

49

49

9a

9

2 17

38f

38

10

34 38

9

50

26

40

G

51

#6

12

51

38

15

14 15 51

47

E

51

38 34

50

44

51

46

#7 9

30

46

34

30

53

9

46

52 24

29

12

52

52 50

29 52

34 52 31

31

34 13

14 52

2

52 34

B

48

51

51

51

44

34

21

52

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

#5

52

12

24a

29e

9b

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 44c

42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44b 12f

11d

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 83

51

52

52 24

2

52

49

41

44

34

34

31 33 13 51 22 20

12 34

9 18

12

42

47

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

52 31 52 54 21 36

43 13

35

38 50

37

19

22

41

52

19 46

51

12 39

38

42

16

24 54 28 30 51 34 33

45

39

25

19

52 52 16 34 14 23 51 20 21 51 28

51 40

37 52 37

18

52

13

12 52 52

40

52

2

34 52

51

12

52

15

13

52

52

12

12 17

11

50

52 38

17

52

20 52 20 52 52

52

51

25 52

52 52 52

49

34

9

52

40

51

51

51

39

12

51

51

24

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 78

42a

14a

21a

53

16a

43

46b

19b 19c 34f 20

23

52 21 52 29

34a

34b 41

18a

24e

26

50b 50c 37d

46a

31 51

13a 2c 13b

52 30

52 51

19a

34j

52 51 C

52

52 52

44 50

52

➤ 2

16

24d

11e/50a

37e 41a

36

38b #3

13

34 24 42

46

19

29

➤

14 21

52 19

25d

15a

51

39a 12h

12i

15b

29

52 35

12g 13c

52 52 2 52

17d 27b

33

45

16

25 52

14b

24b

15

41

50

34d

39c

39b

26a 40a

17a 37

45

17b 2b

27a

50

51b

24c

52

52

52 37 F

51

34 24

50 52 50

45

51

#2

2

14

52 52

24 52 52 27

51

25

11

10c

FRONT

J

27

12

11

26b

52

FRONT

K

➤ FRONT

39

24

21

14

51a 49a

14c 38c

38

24

21b

52

14

27 51 26 17

52

52 51

2

11

49 39

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

52

11b 11c

10b

10

52

17

38d

52 52

9 11a

10a

38e

34e

52

2a

10

17c

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47 12

52

50

51

48 47

32

43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

DRIVE RANGE 1ST GEAR 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

SHIFT SOL 1

N.L.

OFF

LINE PRESSURE CONTROL SOLENOID

N.H.

N.L.

ON

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

3

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46b

2d

32a 32b

2e

46a

EX LINE

PCS 35 REV CL

2c

12f 12e 12d

51

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. OFF

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

35a

43a

34l

EX

PS3 C1234 PRESSURE CONTROL SOLENOID 5

PRESSURE SWITCH 3 NORMALLY CLOSED

PS3

41a

PCS 26 CL

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

ACT FD LIM

4

SOL 2

PRESSURE SWITCH 4 NORMALLY CLOSED

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 79

42a

ACT FD LIM

ACT FD LIM

FILTER PLATE ASSEMBLY (311)

SOL 1

FLUID PAN (29)

44

35 CL REV FD

PS4

FLUID FILTER ASSEMBLY (26)

47b

ACT FD LIM

LINE

29b

21 28a 29a

ACT FD LIM

PCS LINE

LINE

29c

ACT FD LIM

PCS TCC

24e

36

CBR 1

29d

47a

PCS 1234 CL PCS LINE PCS TCC

ACT FD LIM

49a

PS1

24d

51c 29e

PS3 PS1 LINE PCS 35 REV CL

1234 CL DFLT ACT FD LIM

ACT FD LIM

1234 CL PCS LINE

31a

EX

28b

PCS 26 CL

LINE 1234 CL DFLT

ACT FD LIM ACT FD LIM

SUCTION

2b 24a 24b 24c

CSV2 LATCH

DRIVE CBR1/CBR FD

11

35 REV CL

EX

EX DRIVE

#2

17a 31c 31b

CBR

M

10c

COMP FD

ACT FD LIM

EX R N D

35 CL REV FD

P

SOL 1

EX

10b

CLUTCH SELECT VALVE 2

REVERSE

EX

EX

17c

40a

16a

22

DRIVE 1-6

REG APP

10 17b 17d 10a

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

SOL 1

38a

LINE

COMP FD

38b

REVERSE

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SHTL TCC REGULATOR VALVE

38c

31 13b 13c

38d 38f

39 48b

PS1

DRIVE 1-6

PCS TCC

38e

9a 9b 48a

PCS CBR1/456 CL

LINE

11c

LUBE 456 CL

12c

ACT FD LIM REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

SOL 1 35 REV CL

9

13a 13d 13e 30a

CBR

14

ISOLATOR VALVE

12b

12a

40

2a

5

26 CL

CBR1 FDBK

CBR1/456 CL FD 19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

37e

53b

37c

37b

53a 21d

37a

21e

37d

DRIVE 1-6

48 45b

13

PCS LINE

41

35 CL REV FD

11b

FLUID PUMP COVER (219)

37

45a

PS5

EXH

38

CSV2 LATCH PS5 ACT FD LIM

50a

11d 11a

DECREASE

12

456 CL

CBR EX

50b

26 11e

20

#4

CSV3 ENABLE

DRIVE 1-6

PCS TCC

LINE

42

LINE

REVERSE 456 CL

COMP FD

34

23

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e 50d

54a

DRV B

50f

EX BF

25

#3

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

EX BF

36a

44a

44b

44c

43 44d

12h

12g

12i

25b

25a 44e

25c 44f

51b

15a

25d

14a

14b

15b

14c

27a

27b

26b

51a

26a

32

456 CL

DRV B

50h 50g

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

3

33

LOWER CONTROL VALVE BODY (307)

39a

LINE

45

39b

29

2

50

#7

EX

39c

CONVERTER FEED LIMIT

GASKET

EX

SPACER PLATE (305)

#5

#1

#6

ACT FEED LIMIT VALVE

35 REV FD

35R SPL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

ACT FD LIM

CASE (7) CONV FD LIMIT

7

456 CL 35 REV CL FDBK

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

456 CL

26 CL/1234 CL FD 456 CL

35 REV CL

ISOLATOR

EX BF

EX BF

456 CL

CONV FD

84

2-6 CLUTCH REG

EX BF EX BF

PS1

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

26 CL/1234 CL FD EX BF

26 CL

PS1 EX

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

EX

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FDBK

1-2-3-4 CLUTCH REGULATOR VALVE

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

DRIVE RANGE – 1ST GEAR LOSS OF DRIVE

• CBR1/C456 Pressure Control Solenoid 3 - Commanded/failed HIGH (OFF) - Leaking

• Clutch Select Valve 2 (352) - Stuck

• #1 Ball Check Valve - Stuck - Missing

• #4 Ball Check Valve - Stuck - Missing

• #5 Ball Check Valve - Stuck - Missing

• 1-2-3-4 Clutch Regulator Valve (337) - Stuck

• 1-2-3-4 Clutch Piston (414) - Jammed or cracked - Leaking

• 1-2-3-4 Clutch Housing (427) - Passage plugged - Cracked

• 1-2-3-4 Clutch Piston Inner Seal (423) or Housing Seals (424 & 425) - Leaking

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG OFF

ON

ON

OFF

OFF

OFF

APPLIED

HOLDING

84A

DRIVE RANGE – 1ST GEAR PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

84B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 1ST GEAR

52 55

57

5

2a

3

5

5

51 51 57

52

7 7

2

34 8

38

8

2

49

26

38

2

2

2

34

2

26 11 14

14 11

9

9

6 5 11 34 26 14

52 2

49

7

➤

52

52

➤

10

10 56

52

➤

52

➤

11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2

2 6

57

5

5 4

4 51

2

52

6

2

3

➤

2

5

52 55

2

52

52

6

FRONT

55

52

52

55

55

➤

52

➤

55

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

17 38

34

11

10

11

49

49

9a

9

2

38f

38

10

34 38

9

11

J

50

26

40

12

11

24 52 52 27

51

25

G

51

34 24

#6

37

12

51

15 38

15

14 15 51

52 47

E

51

14 21

52 19

38 42

46

34

50

44

51

46

#7 9

30

46

34

30

53

9

46

52

52 51 C

24

29

12

52 50

29 34 52 52 31

31

34 13

14 52

2

52 34

B

48

51

51

51

44

34

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

52

21

52

#5

53

12

24a

29e

9b

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 44c

42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44b 12f

11d

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 85

52 24

2

51

12 49

52

41

25

19

44

34

16

52 52 16 34 14 23 51 20 21 51 28

34

31 33 13 51 22 20

22

12

41 38 50 12

34

42

47

37 9 18

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

52 31 52 54 21 36

43 13

35

12 39

52

19

51

45

38

42

19 46

24 54 28 30 51 34 33

40

37 52 37

18

52

51

52 52

52

2

13

12 52

40

15

13

52

34 52

12 17

11

50

52 38

17

52

52

12

51

25 52

20 52 20 52 52

52

49

34

9

52

40

51

51

51

39

12

51

51

24 52

52 52 52

51

51

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 80

42a

14a

21a

31 51

16a

43

46b

19b 19c 34f 20

23

52 21 52 29

34a

34b 41

18a

24e

26

50b 50c 37d

46a

52 30

52 51

13a 2c

34j 52

24d

11e/50a

37e 41a

36

52 35

12g

19a

13b

44 50

52

52

52 52

19

29

#3 2

16

25d

15a

51

39a 12h

12i

15b

29

38b

13

34 24

17d 27b

33

13c

52 52 2 52

16

25 50

14b

24b

45

41

45

34d

39c

39b

26a 40a

17a

52 37 F

51

17b 2b

27a

50

51b

24c

52

52

45

51

#2

2

14

52 50 52 52 50

11

10c

➤

27

FRONT

39

26b

52

➤

➤ FRONT

24

24

21

38

14

51a 49a

14c 38c

17

52

52 51

21b

52

14

27 51 26

FRONT

K

49 39

2

2 52

11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

52

11b 11c

10b

10

52 17

38d

52 52

9 11a

10a

38e

34e

52

2a

10

17c

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47 12

52

50

51

48 47

32

43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

DRIVE RANGE 2ND GEAR 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

M

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 81

SHIFT SOL 1

N.L.

OFF

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

N.L. ON

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

PRESSURE SWITCH 3 NORMALLY CLOSED

3

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46b

2d

32a 32b

2e

46a

12f

PCS 35 REV CL

EX

CSV2 LATCH PS5 ACT FD LIM

12e 12d

CB26 PRESSURE CONTROL SOLENOID 4

N.L.

LINE

2c

PCS 26 CL

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

PS3

41a

51

ON

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.H. OFF

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

35a

43a

34l

EX

42a

ACT FD LIM

ACT FD LIM

4

PCS TCC

PRESSURE SWITCH 4 NORMALLY CLOSED

ACT FD LIM

FILTER PLATE ASSEMBLY (311)

44

35 CL REV FD

ACT FD LIM

FLUID PAN (29)

SOL 1

FLUID FILTER ASSEMBLY (26)

47b

ACT FD LIM

PS4

LINE

29b

21

ACT FD LIM

PCS LINE

LINE

29c

ACT FD LIM

SOL 2

24e

36

PCS 1234 CL PCS LINE PCS TCC

CBR 1

29d

47a

1234 CL DFLT ACT FD LIM

ACT FD LIM

49a

51c 29e

PS3 PS1 LINE PCS 35 REV CL

PS3

24d

31a

EX

28a 29a

PS1

1234 CL PCS LINE

#2

17a 31c 31b

28b

PCS 26 CL

LINE 1234 CL DFLT

ACT FD LIM ACT FD LIM

SUCTION

2b 24a 24b 24c

CSV2 LATCH

DRIVE CBR1/CBR FD

11

35 REV CL

EX

EX DRIVE

10c

COMP FD

ACT FD LIM

EX R N D

35 CL REV FD

P

SOL 1

EX

10b

CLUTCH SELECT VALVE 2

REVERSE

EX

EX

17c

40a

16a

22

DRIVE 1-6

REG APP

10 17b 17d 10a

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

SOL 1

38a

LINE

COMP FD

38b

REVERSE

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SHTL TCC REGULATOR VALVE

38c

31 13b

CBR

LINE

38f

39 48b

PS1

DRIVE 1-6

PCS TCC

38e

9a 9b 48a

13c

38d

LUBE 456 CL

12c

ACT FD LIM REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

SOL 1 35 REV CL

11c

9

13a 13d 13e 30a

CBR

14

ISOLATOR VALVE

12b

12a

40

2a

5

26 CL

CBR1 FDBK

CBR1/456 CL FD 19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

37e

53b

37c

37b

53a 21d

37a

54a

37d

DRIVE 1-6

48 45b

13

PCS LINE

41

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

37

PCS CBR1/456 CL

EXH

38

45a

PS5

50a

11d 11a

DECREASE

12

456 CL

CBR EX

50b

26 11e

20

#4

CSV3 ENABLE

DRIVE 1-6

PCS TCC

LINE

42

LINE

35 CL REV FD

COMP FD

34

23

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e 50d

21e

DRV B

50f

EX BF

25

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

EX BF

36a

44a

44b

44c

43 44d

12h

12g

12i

25b

25a 44e

25c 44f

51b

15a

25d

14a

14b

15b

14c

27a

27b

26b

51a

32

#3

DRV B

50h 50g

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

3

33

LOWER CONTROL VALVE BODY (307)

39a

2

45

39b

29

LINE

50

#7

EX

39c

CONVERTER FEED LIMIT

GASKET

26a

SPACER PLATE (305)

EX

CONV FD LIMIT

7

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

ACT FD LIM

CASE (7)

456 CL 456 CL

35 REV CL FDBK

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

PS1 456 CL

35 REV CL

ISOLATOR

EX BF

EX BF 26 CL/1234 CL FD

CONV FD

86

2-6 CLUTCH REG

EX BF EX BF

456 CL

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

26 CL/1234 CL FD EX BF

26 CL

PS1 EX

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

EX

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FDBK

1-2-3-4 CLUTCH REGULATOR VALVE

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

DRIVE RANGE – 2ND GEAR NO 2ND GEAR

• CB26 Pressure Control Solenoid 4 - Commanded/failed LOW (OFF) - Leaking

• 2-6 Clutch Regulator Valve (334) - Stuck

• Center Support (459) - Broken - Feed hole plugged

• 2-6 Clutch Piston (457) - Leaking - Jammed or cracked

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG OFF

ON

ON

ON

OFF

OFF

APPLIED

APPLIED

86A

DRIVE RANGE – 2ND GEAR PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

86B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 2ND GEAR

52 55

57

5

2a

3

5

5

51 51 57

52

7 7

2

34

52 52 38

8

2

2

49

49

26

38

2

2

2

52

7

6 5 11 34 26 14

34 52 2

26 11 14

14 11

9

9

52

➤

8

10

10 56

➤

11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2

2 6

57

5

5 4

4 51

2

52

6

2

3

➤

2

5

52 55

2

52

52

6

FRONT

55

52

52

55

55

➤

52

➤

55

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

17 38

34

11

10

11

49

49

9a

9

2

38f

38

10

34 38

9

11

J

50

26

40

12

11

24 52 52 27

51

25

G

51

34 24

#6

37

12

51

15 38

15

14 15 51

52 47

E

51

14 21

52 19

38 42

46

34

50

44

51

46

#7 9

30

46

34

30

53

9

46

52

52 51 C

24

29

12

52 50

29 34 52 52 31

31

34 13

14 52

2

52 34

B

48

51

51

51

44

34

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

52

21

52

#5

53

12

24a

29e

9b

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 44c

42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44b 12f

11d

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 87

52 24

2

51

12 49

52

41

25

19

44

34

16

52 52 16 34 14 23 51 20 21 51 28

34

31 33 13 51 22 20

22

12

41 38 50 12

34

42

47

37 9 18

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

52 31 52 54 21 36

43 13

35

12 39

52

19

51

45

38

42

19 46

24 54 28 30 51 34 33

40

37 52 37

18

52

51

52 52

52

2

13

12 52

40

15

13

52

34 52

12 17

11

50

52 38

17

52

52

12

51

25 52

20 52 20 52 52

52

49

34

9

52

40

51

51

51

39

12

51

51

24 52

52 52 52

51

51

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 82

42a

14a

21a

31 51

16a

43

46b

19b 19c 34f 20

23

52 21 52 29

34a

34b 41

18a

24e

26

50b 50c 37d

46a

52 30

52 51

13a 2c

34j 52

24d

11e/50a

37e 41a

36

52 35

12g

19a

13b

44 50

52

52

52 52

19

29

#3 2

16

25d

15a

51

39a 12h

12i

15b

29

38b

13

34 24

17d 27b

33

13c

52 52 2 52

16

25 50

14b

24b

45

41

45

34d

39c

39b

26a 40a

17a

52 37 F

51

17b 2b

27a

50

51b

24c

52

52

45

51

#2

2

14

52 50 52 52 50

11

10c

➤

27

FRONT

39

26b

52

➤

➤ FRONT

24

24

21

38

14

51a 49a

14c 38c

17

52

52 51

21b

52

14

27 51 26

FRONT

K

49 39

2

2 52

11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

52

11b 11c

10b

10

52 17

38d

52 52

9 11a

10a

38e

34e

52

2a

10

17c

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47 12

52

50

51

48 47

32

43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

DRIVE RANGE 3RD GEAR 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH 4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

SHIFT SOL 1

N.L.

OFF

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

N.L. ON

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

PRESSURE SWITCH 3 NORMALLY CLOSED

3

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. ON

PS5

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46b

2d

32a

2e

32b

43b

35a

43a

34l

46a

EX LINE

EX

PCS 35 REV CL

2c

12f 12e 12d

51

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. OFF

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS3

41a

PCS 26 CL

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

ACT FD LIM

PS1

4

SOL 2

PRESSURE SWITCH 4 NORMALLY CLOSED

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 83

42a

ACT FD LIM

ACT FD LIM

FILTER PLATE ASSEMBLY (311)

SOL 1

FLUID PAN (29)

44

35 CL REV FD

PS4

FLUID FILTER ASSEMBLY (26)

47b

ACT FD LIM

LINE

29b

21 28a 29a

ACT FD LIM

PCS LINE

LINE

29c

ACT FD LIM

PS3

24e

36

CBR 1

29d

47a

PCS 1234 CL PCS LINE PCS TCC

PCS TCC

49a

ACT FD LIM

24d

51c 29e

PS3 PS1 LINE PCS 35 REV CL

1234 CL DFLT ACT FD LIM

ACT FD LIM

1234 CL PCS LINE

31a

EX

28b

PCS 26 CL

LINE 1234 CL DFLT

ACT FD LIM ACT FD LIM

SUCTION

2b 24a 24b 24c

CSV2 LATCH

DRIVE CBR1/CBR FD

11

35 REV CL

EX

EX DRIVE

#2

17a 31c 31b

CBR

M

10c

COMP FD

ACT FD LIM

EX R N D

35 CL REV FD

P

SOL 1

EX

10b

CLUTCH SELECT VALVE 2

REVERSE

EX

EX

17c

40a

16a

22

DRIVE 1-6

REG APP

10 17b 17d 10a

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

SOL 1

38a

LINE

COMP FD

38b

REVERSE

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SHTL TCC REGULATOR VALVE

38c

31 13b

PS1

LINE

38f

39 48b

PCS CBR1/456 CL

DRIVE 1-6

PCS TCC

38e

9a 9b 48a

13c

38d

LUBE 456 CL

12c

ACT FD LIM REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

SOL 1 35 REV CL

11c

9

13a 13d 13e 30a

CBR

14

ISOLATOR VALVE

12b

12a

40

2a

5

26 CL

CBR1 FDBK

CBR1/456 CL FD 19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

37e

53b

37c

37b

53a 21d

37a

54a

37d

DRIVE 1-6

48 45b

13

PCS LINE

41

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

37

45a

PS5

EXH

38

CSV2 LATCH PS5 ACT FD LIM

50a

11d 11a

DECREASE

12

456 CL

CBR EX

50b

26 11e

20

#4

CSV3 ENABLE

DRIVE 1-6

PCS TCC

LINE

42

LINE

35 CL REV FD

COMP FD

34

23

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e 50d

21e

DRV B

50f

EX BF

25

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

EX BF

36a

44a

44b

44c

43 44d

12h

12g

12i

25b

25a 44e

25c 44f

51b

15a

25d

14a

14b

15b

14c

27a

27b

26b

51a

32

#3

DRV B

50h 50g

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

3

33

LOWER CONTROL VALVE BODY (307)

39a

2

45

39b

29

LINE

50

#7

EX

39c

CONVERTER FEED LIMIT

GASKET

26a

SPACER PLATE (305)

EX

CONV FD LIMIT

7

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

ACT FD LIM

CASE (7)

456 CL 456 CL

35 REV CL FDBK

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

PS1 456 CL

35 REV CL

ISOLATOR

EX BF

EX BF 26 CL/1234 CL FD

CONV FD

88

2-6 CLUTCH REG

26 CL EX BF

EX BF

456 CL

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

26 CL/1234 CL FD EX BF

EX

PS1 EX

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FDBK

1-2-3-4 CLUTCH REGULATOR VALVE

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

DRIVE RANGE – 3RD GEAR NO 3RD GEAR

• C35R Pressure Control Solenoid 2 - Commanded/failed LOW (ON) - Leaking

• 3-5 Reverse Clutch Regulator Valve (336) - Stuck

• 3-5 Reverse Clutch Piston (421) - Leaking - Jammed or cracked

• 3-5 Reverse Clutch Piston Inner Seal (419) or Outer Seal (422) - Leaking - Missing

• Compensator Feed Regulator Valve (356) - Stuck

• CB26 Pressure Control Solenoid 4 - Commanded/failed HIGH (ON)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG OFF

ON

ON

OFF

ON

OFF

APPLIED

APPLIED

88A

DRIVE RANGE – 3RD GEAR PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

88B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 3RD GEAR

52

➤

55 55

57

55

5 4

2a

3

5

5

51 51 57

52

7 7

2

34

52

38

8

2

2

49

49

26

38

2

2

2

7

6 5 11 34 26 14

34 52 2

26 11 14

14 11

9

9

52

➤

52

52

➤

8

10

10 56

➤

11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2

2 6

57

5

➤

5 4

51

2

52

6

2

3

➤

2

5

55

2

52

52

6 52

52

55

55

FRONT

52 52

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

38

34

11

10

11

49

49

9a

9

2 17

38f

38

10

34 38

9

50

26

G

51

40

12

14 34 24

#6

12

51

38

15

14 15 51

47

E

51

38 34

50

44

51

46

#7 9

30

46

34

30

53

9

46

52 24

29

12

52

52 50

29 34 52 31

52

31

34 13

14 52

2

52 34

B

48

51

51

51

44

34

21

52

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

#5

52

12

24a

29e

9b

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 44c

42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44b 12f

11d

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 89

51

52

52 24

2

52

49

18

52

41

25

19

16

52 52 16 34 14 23 51 20 21 51 28

44

34

31 33 13 51 22 20

22

12

41 39 38 50 12

34

42

47

37 9 18

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

52 31 52 54 21 36

43 13

35

12

37

52

19

51

45

38

42

19 46

24 54 28 30 51 34 33

51 40

37 52 39

34

13

12 52 52

40

52

2

34 52

51

12

52

15

13

52

52

12

12 17

11

50

52 38

17

52

20 52 20 52 52

52

51

25 52

52 52 52

49

34

9

52

40

51

51

51

39

12

51

51

24

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 84

42a

14a

21a

53

16a

43

46b

19b 19c 34f 20

23

52 21 52 29

34a

34b 41

18a

24e

26

50b 50c 37d

46a

31 51

13a 2c 13b

52 30

52 51

19a

34j

52 51 C

52

52 52

44 50

52

➤ 2

16

24d

11e/50a

37e 41a

36

38b #3

13

34 24 42

46

19

29

➤

14 21

52 19

25d

15a

51

39a 12h

12i

15b

29

52 35

12g 13c

52 52 2 52

17d 27b

33

45

16

25 52

14b

24b

15

41

50

34d

39c

39b

26a 40a

17a 37

45

17b 2b

27a

50

51b

24c

52

52

52 37 F

51

#2

2

50 52 50

45

51

24 52 52 27

51

25

11

10c

FRONT

J

27

52 52

26b

52

FRONT

K

➤ FRONT

39

24 11

21

14

51a 49a

14c 38c

38

24

21b

52

14

27 51 26 17

52

52 51

2

11

49 39

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

52

11b 11c

10b

10

52

17

38d

52 52

9 11a

10a

38e

34e

52

2a

10

17c

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47 12

52

50

51

48 47

32

43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

(Torque Converter Clutch Applied) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

DRIVE 1-6

M

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 85

SHIFT SOL 1

N.L.

OFF

LINE PRESSURE CONTROL SOLENOID

N.H.

PS3 C1234 PRESSURE CONTROL SOLENOID 5

N.L.

ON

TCC PRESSURE CONTROL SOLENOID

N.L.

ON

PRESSURE SWITCH 3 NORMALLY CLOSED

3

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

46a

46b

2d

32a 32b

2e

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE EX PS3

PCS 35 REV CL

41a

LINE

2c

12f 12e 12d

51

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

35a

43a

EX

42a

PCS 26 CL

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

ACT FD LIM

4

SOL 2

PRESSURE SWITCH 4 NORMALLY CLOSED

ACT FD LIM

FILTER PLATE ASSEMBLY (311)

SOL 1

FLUID PAN (29)

44

35 CL REV FD

PS4

FLUID FILTER ASSEMBLY (26)

47b

ACT FD LIM

LINE

29b

21 28a 29a

ACT FD LIM

PCS LINE

LINE

29c

ACT FD LIM

PCS TCC

24e

36

CBR 1

29d

ACT FD LIM

PCS 1234 CL PCS LINE PCS TCC

ACT FD LIM

49a

PS1

24d

51c 29e

47a

1234 CL DFLT ACT FD LIM

ACT FD LIM

1234 CL PCS LINE

31a

EX

PS3 PS1 LINE PCS 35 REV CL

LINE 1234 CL DFLT

ACT FD LIM ACT FD LIM

SUCTION

2b 24a 24b 24c

#2

17a 31c 31b

28b

PCS 26 CL

11

35 REV CL

CSV2 LATCH

DRIVE CBR1/CBR FD

10c

COMP FD

EX

EX DRIVE

35 CL REV FD

R N D

SOL 1

EX

10b

P

REVERSE

EX

17c 17d 10a

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

REG APP

10 17b

40a

LUBE 456 CL

SOL 1

38a

LINE

COMP FD

38b

CLUTCH SELECT VALVE 2

TCC REGULATOR VALVE

EX

SHTL

38c

ISOLATOR VALVE

34l

DRIVE 1-6

38d 38f

16a

22

EX

PCS TCC

38e

31 13b

CBR

9

39 48b

PS1

LINE

11c

5

ACT FD LIM

ACT FD LIM

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SOL 1 35 REV CL

14

9a 9b 48a

13c

2a

PCS LINE

12b

12a

CLUTCH SELECT VALVE 3

13

FLUID PUMP COVER (219)

26 CL

CBR1 FDBK

CBR1/456 CL FD 19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

DRIVE 1-6

37e

37d

53b

37c

37b

53a 21d

37a

54a

11b

CSV2 LATCH PS5 ACT FD LIM

50a

13a 13d 13e 30a

CBR

PCS CBR1/456 CL

EXH

48 40

REVERSE 456 CL

COMPENSATOR FD REG VALVE

11d 11a

DECREASE

41

45b

PS5

50b

26 11e

37

45a

REVERSE

PCS TCC LINE

38

CSV3 ENABLE

REVERSE 35 CL REV FD EX DRV B

34

12

456 CL

CBR EX

50c

20

456 CL

DRIVE 1-6

47

42

#4

35 CL REV FD

COMP FD

50d

23

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e

EX BF

21e

35 REV CL ACT FD LIM ACT FD LIM

50f

EX

REG APPLY

EX BF

46

LINE

DRV B

50h 50g

COMP FD LINE EX

LUBE

35

25

#3

DRIVE 1-6

DRV B

39a

36a

44a

44b

44c

43 44d

12h

12i

32

12g

25b

25a 44e

25c 44f

51b

15a

25d

14a

14b

15b

14c

27a

27b

26b

51a

26a

33

LOWER CONTROL VALVE BODY (307)

29

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

3

45

39b

TCC CONTROL VALVE

2

LINE

50

#7

EX

39c

CONVERTER FEED LIMIT

GASKET

EX

SPACER PLATE (305)

PCS 1234 CL

CONV FD LIMIT

7

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

ACT FD LIM

CASE (7)

456 CL 456 CL

35 REV CL FDBK

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

PS1 456 CL

35 REV CL

ISOLATOR

EX BF

EX BF 26 CL/1234 CL FD

CONV FD

90

2-6 CLUTCH REG

EX BF EX BF

456 CL

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

26 CL/1234 CL FD EX BF

26 CL

PS1 EX

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

EX

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FDBK

1-2-3-4 CLUTCH REGULATOR VALVE

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

12c

DRIVE RANGE 4TH GEAR

DRIVE RANGE – 4TH GEAR (Torque Converter Clutch Applied) The torque converter clutch (TCC) applies during 4th gear operation when the transmission control module (TCM) receives the appropriate input signals to energize (turn ON) the Torque Converter Clutch Pressure Control Solenoid. The TCC can apply in 2nd and 3rd gear also.

NO 4TH GEAR

• CBR1/C456 Pressure Control Solenoid 3 - Commanded/failed LOW (ON) - Leaking

• CBR1/C456 Clutch Regulator Valve (327) - Stuck

• 4-5-6 Clutch Piston (439) - Leaking - Jammed or cracked

• Turbine Shaft Fluid Seal Rings (442) - Leaking - Missing

• 4-5-6 Clutch Housing Assembly (441) - Leaking - Cracked NO TCC APPLY

• TCC Pressure Control Solenoid -

Commanded/failed LOW (OFF) Stuck OFF Leaking Poor connection

• TCC Regulator Apply Valve (355) - Stuck in OFF position

• TCC Control Valve (227) - Stuck in OFF position

• Turbine Shaft Seal (443) - Damaged - Missing TCC STUCK ON

• TCC Pressure Control Solenoid - Stuck ON

• TCC Regulator Apply Valve (355) - Stuck ON

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG OFF

ON

ON

OFF

OFF

ON

APPLIED

APPLIED

90A

DRIVE RANGE – 4TH GEAR (Torque Converter Clutch Applied) PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

90B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 4TH GEAR

(Torque Converter Clutch Applied)

52 55

57

2 5

2a

5

51 51 57

52

7 7

2

34 8

10

10 52

56 38

8

2

2

49

49

26

38

2

2

2

52

7

6 5 11 34 26 14

➤

34 52 2

26 11 14

14 11

9

9

52

➤

52

➤

11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2 3

5

57

5

5 4 2

6

2

52

6

2

3

4 51

52 55

2

52

52

6 5

FRONT

55

52

52

55

55

➤

52

➤

55

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

34

10

11

49

49

38f

38

10

34 38

9

50

26 52

52 G

51

37

12

51

F

45

38

15

14 15 51

E

34

50

44

51

46

2 16

#7 30

46

50

34

53

9

46

52

C

24

29

12

52

52 50

29 52

34 52 31

31

34 13

14 52

2

52 34

B

48

51

51

51

44

34

21

52

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

#5

52

12

24a

29e

9b

34

47

37d

25c 32 38a 25a/44e 34i 44d

37a/53a 44c

42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44b 12f

11d

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 91

51

52

52 24

2

52

49

18

52

41

16

52 52 16 34 14 23 51 20 21 51 28

44

34

31 33 13 51 22 20

22

12

41 39 38 50 12

34

42

47

37 9 18

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

52 31 52 54 21 36

43 13

35

12

37

52

19

51

45

38

42

19 46

24 54 28 30 51 34 33

40

37 52 39

25

19

51

52 52

34

13

12

40

52

2

34 52

51

12

52

15

13

52

52

12

12 17

11

50

52 38

17

52

20 52 20 52 52

52

51

25 52

52 52 52

49

34

9

52

40

51

51

51

39

12

51

51

24

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 86

42a

14a

21a

53

16a

43

46b

19b 19c 34f 20

23

52 21 52 29

34a

34b 41

18a

24e

26

50b 50c 37e

46a

31 51

13a 2c 13b

52 30

52 51

19a

34j

52 51 52

52

52 52

44 30

24d

11e/50a

12g

41a

36

52 35

33

15a

51

39a 12h

12i

15b

29

38b #3

13

34 24 42

46

19

9

➤

14 21

17d 27b

25d

24b

13c

52 52 2 52

52 19

52

29

14b

45

50 47

34d

39c

39b

26a 40a

2b

52

16

25

51

17b

15

41

52 37 #6

#2

2

27a

50

51b

24c

17a

45

51

51

50 52 50

➤

24 52 40 52 27 17 14 34 24 52 51

25

11

10c

FRONT

J

27

12

11

26b

52

FRONT

K

➤ FRONT

39

24

21

14

51a 49a

14c 38c

38

24

21b

52

14

27 51 26 17

52

52 51

2

11

49 39

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

52

11b 11c

10b

10

52

17

38d

52 52

9 11a

10a

38e

34e

52

2a

10

17c

➤

38

11

9a

9

2 17

➤

14

26

26

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47 12

52

50

51

48 47

32

43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

(Torque Converter Clutch Applied) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

DRIVE 1-6

M

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 87

SHIFT SOL 1

N.L.

OFF

LINE PRESSURE CONTROL SOLENOID

N.H.

PS3 C1234 PRESSURE CONTROL SOLENOID 5

N.L. OFF

TCC PRESSURE CONTROL SOLENOID

N.L.

ON

PRESSURE SWITCH 3 NORMALLY CLOSED

3

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H.

ON

46a

46b

2d

32a 32b

2e

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE EX PS3

PCS 35 REV CL

41a

LINE

2c

12f 12e 12d

51

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

35a

43a

EX

42a

PCS 26 CL

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

ACT FD LIM

4

SOL 2

PRESSURE SWITCH 4 NORMALLY CLOSED

ACT FD LIM

FILTER PLATE ASSEMBLY (311)

SOL 1

FLUID PAN (29)

44

35 CL REV FD

PS4

FLUID FILTER ASSEMBLY (26)

47b

ACT FD LIM

LINE

29b

21 28a 29a

ACT FD LIM

PCS LINE

LINE

29c

ACT FD LIM

PCS TCC

24e

36

CBR 1

29d

ACT FD LIM

PCS 1234 CL PCS LINE PCS TCC

ACT FD LIM

49a

PS1

24d

51c 29e

47a

1234 CL DFLT ACT FD LIM

ACT FD LIM

1234 CL PCS LINE

31a

EX

PS3 PS1 LINE PCS 35 REV CL

LINE 1234 CL DFLT

ACT FD LIM ACT FD LIM

SUCTION

2b 24a 24b 24c

#2

17a 31c 31b

28b

PCS 26 CL

11

35 REV CL

CSV2 LATCH

DRIVE CBR1/CBR FD

10c

COMP FD

EX

EX DRIVE

35 CL REV FD

R N D

SOL 1

EX

10b

P

REVERSE

EX

17c 17d 10a

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

REG APP

10 17b

40a

LUBE 456 CL

SOL 1

38a

LINE

COMP FD

38b

CLUTCH SELECT VALVE 2

TCC REGULATOR VALVE

EX

SHTL

38c

ISOLATOR VALVE

34l

DRIVE 1-6

38d 38f

16a

22

EX

PCS TCC

38e

31 13b

CBR

9

39 48b

PS1

LINE

11c

5

ACT FD LIM

ACT FD LIM

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SOL 1 35 REV CL

14

9a 9b 48a

13c

2a

PCS LINE

12b

12a

CLUTCH SELECT VALVE 3

13

FLUID PUMP COVER (219)

26 CL

CBR1 FDBK

CBR1/456 CL FD 19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

DRIVE 1-6

37e

37d

53b

37c

37b

53a 21d

37a

54a

11b

CSV2 LATCH PS5 ACT FD LIM

50a

13a 13d 13e 30a

CBR

PCS CBR1/456 CL

EXH

48 40

REVERSE 456 CL

COMPENSATOR FD REG VALVE

11d 11a

DECREASE

41

45b

PS5

50b

26 11e

37

45a

REVERSE

PCS TCC LINE

38

CSV3 ENABLE

REVERSE 35 CL REV FD EX DRV B

34

12

456 CL

CBR EX

50c

20

456 CL

DRIVE 1-6

47

42

#4

35 CL REV FD

COMP FD

50d

23

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e

EX BF

21e

35 REV CL ACT FD LIM ACT FD LIM

50f

EX

REG APPLY

EX BF

46

LINE

DRV B

50h 50g

COMP FD LINE EX

LUBE

35

25

#3

DRIVE 1-6

DRV B

39a

36a

44a

44b

44c

43 44d

12h

12i

32

12g

25b

25a 44e

25c 44f

51b

15a

25d

14a

14b

15b

14c

27a

27b

26b

51a

26a

33

LOWER CONTROL VALVE BODY (307)

29

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

3

45

39b

TCC CONTROL VALVE

2

LINE

50

#7

EX

39c

CONVERTER FEED LIMIT

GASKET

EX

SPACER PLATE (305)

PCS 1234 CL

CONV FD LIMIT

7

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

ACT FD LIM

CASE (7)

456 CL 456 CL

35 REV CL FDBK

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

PS1 456 CL

35 REV CL

ISOLATOR

EX BF

EX BF 26 CL/1234 CL FD

CONV FD

92

2-6 CLUTCH REG

26 CL EX BF

EX BF

456 CL

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

26 CL/1234 CL FD EX BF

EX

PS1 EX

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

1234 CL FDBK

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

12c

DRIVE RANGE 5TH GEAR

DRIVE RANGE – 5TH GEAR (Torque Converter Clutch Applied) NO 5TH GEAR

• C35R Pressure Control Solenoid 2 - Commanded/failed LOW (ON) - Leaking

• 3-5 Reverse Clutch Regulator Valve (336) - Stuck

• 3-5 Reverse Clutch Piston (421) - Leaking - Jammed or cracked

• 3-5 Reverse Clutch Piston Inner Seal (419) or Outer Seal (422) - Leaking - Missing

• Compensator Feed Regulator Valve (356) - Stuck

• C1234 Pressure Control Solenoid 5 - Commanded/failed HIGH (ON)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG OFF

ON

OFF

OFF

ON

ON

APPLIED APPLIED

92A

DRIVE RANGE – 5TH GEAR (Torque Converter Clutch Applied) PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

92B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 5TH GEAR

(Torque Converter Clutch Applied)

52 55

57

2 5

2a

5

51 51 57

52

7 7

2

52 52 38

8

2

2

49

49

26

38

2

2

2

➤

34 52 2

26 11 14

14 11

9

9

52

➤

8

10

10 56

52 7

6 5 11 34 26 14

34 11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2 3

5

57

5

5 4 2

6

2

52

6

2

3

4 51

52 55

2

52

52

6 5

FRONT

55

52

52

55

55

➤

52

➤

55

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

34

10

11

49

49

38f

38

10

34 38

9

12

50

26

G

51

40 14

#6

37

12

51

52 47

E

51

38

14 21

52 19

38 34

50

44

51

46

30

46

34

30

53

9

46

52 24

29

12

52

52 50

29 52

34 52 31

31

B

48

51

51

51

44

52 34

2

34

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51

#5

52

12

24a

29e

9b

34

47

37d

25c 32 38a 25a/44e 34i 44d

37a/53a 44c

42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44b 12f

11d

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 93

51

52

52 24

2

34

9

52 52

52

18

52

52 52

13

52 52

12

16

52 52 16 34 14 23 51 20 21 51 28

20 52 20 52 52

34

44

31 33 13 51 22 20

24 54 28 30 51 34 33

51 22

12

12 41 39 38

38

50 12 34

42

47

37

9 18

12

34 44

12

18

50

18

12 12

45

29

52

51

45 12

51

52 31 52 54 21 36

43 13

35

45

52

19

51 40

37 52 39 37

42

19 46

34 52

12

41

34 52

49

52 52

25

19

51

12

52

52

2

12 17

11

25

15

13

52

51

50

40

52 38

17

52

49

51

51

51

39

12

51

51

24

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 88

42a

14a

21a

21 52 29

16a

43

46b

19b 19c 34f 20

23

52

53 21

52

51

➤

34 13

14 52

34a

34b 41

18a

24e

26

50b 50c 37e

46a

31 51

13a 2c 13b

52 30

52 51

19a

34j

52 51

C

52

52 52

44 50

52

#3 2

16

24d

11e/50a

12g

41a

36

52 35

33

15a

51

39a 12h

12i

15b

29

38b

13

34 24 42

46

17d 27b

25d

24b

13c

52 52 2 52

16

15

14 15 51

#7 9

14b

45

19

29

34d

39c

39b

26a 40a

2b

15

25 50

17b

52

41

45

#2

27a

50

51b

24c

17a

52 37

F

51

34 24 52

11

10c

2

50 52 50

45

51

24 52 52 27

51

25

52 52

➤

27

FRONT

J

11

26b

52

FRONT

K

➤ FRONT

24

39

21

14

51a 49a

14c 38c

38

24

21b

52

14

27 51 26 17

52

52 51

2

11

49 39

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

52

11b 11c

10b

10

52

17

38d

52 52

9 11a

10a

38e

34e

52

2a

10

17c

➤

38

11

9a

9

2 17

➤

14

26

26

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47 12

52

50

51

48 47

32

43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

DRIVE RANGE 6TH GEAR

(Torque Converter Clutch Applied) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH 4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

DRIVE 1-6

M

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 89

SHIFT SOL 1

N.L.

OFF

LINE PRESSURE CONTROL SOLENOID

N.H.

PS3 C1234 PRESSURE CONTROL SOLENOID 5

N.L. OFF

TCC PRESSURE CONTROL SOLENOID

N.L.

ON

PRESSURE SWITCH 3 NORMALLY CLOSED

3

SHIFT SOL 2

N.L.

ON

C35R PRESSURE CONTROL SOLENOID 2

N.H. OFF

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46b

2d

32a 32b

2e

46a

EX LINE

PCS 35 REV CL

2c

12f 12e 12d

CB26 PRESSURE CONTROL SOLENOID 4

N.L.

PS3

41a

51

ON

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

35a

43a

34l

EX

42a

PCS 26 CL

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

ACT FD LIM

4

SOL 2

PRESSURE SWITCH 4 NORMALLY CLOSED

ACT FD LIM

FILTER PLATE ASSEMBLY (311)

SOL 1

FLUID PAN (29)

44

35 CL REV FD

PS4

FLUID FILTER ASSEMBLY (26)

47b

ACT FD LIM

LINE

29b

21 28a 29a

ACT FD LIM

PCS LINE

LINE

29c

ACT FD LIM

PCS TCC

24e

36

CBR 1

29d

ACT FD LIM

PCS 1234 CL PCS LINE PCS TCC

ACT FD LIM

49a

PS1

24d

51c 29e

47a

1234 CL DFLT ACT FD LIM

ACT FD LIM

1234 CL PCS LINE

31a

EX

PS3 PS1 LINE PCS 35 REV CL

LINE 1234 CL DFLT

ACT FD LIM ACT FD LIM

SUCTION

2b 24a 24b 24c

#2

17a 31c 31b

28b

PCS 26 CL

11

35 REV CL

CSV2 LATCH

DRIVE CBR1/CBR FD

10c

COMP FD

EX

EX DRIVE

35 CL REV FD

R N D

SOL 1

EX

10b

P

REVERSE

EX

17c 17d 10a

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

REG APP

10 17b

40a

LUBE 456 CL

SOL 1

38a

LINE

COMP FD

38b

CLUTCH SELECT VALVE 2

TCC REGULATOR VALVE

EX

SHTL

38c

ISOLATOR VALVE

ACT FD LIM

DRIVE 1-6

38d 38f

16a

22

EX

PCS TCC

38e

31 13b

CBR

9

39 48b

PS1

LINE

11c

5

12c

ACT FD LIM

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SOL 1 35 REV CL

14

9a 9b 48a

13c

2a

PCS LINE

12b

12a

CLUTCH SELECT VALVE 3

13

FLUID PUMP COVER (219)

26 CL

CBR1 FDBK

CBR1/456 CL FD 19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

DRIVE 1-6

37e

37d

53b

37c

37b

53a 21d

37a

54a

11b

CSV2 LATCH PS5 ACT FD LIM

50a

13a 13d 13e 30a

CBR

PCS CBR1/456 CL

EXH

48 40

REVERSE 456 CL

COMPENSATOR FD REG VALVE

11d 11a

DECREASE

41

45b

PS5

50b

26 11e

37

45a

REVERSE

PCS TCC LINE

38

CSV3 ENABLE

REVERSE 35 CL REV FD EX DRV B

34

12

456 CL

CBR EX

50c

20

456 CL

DRIVE 1-6

47

42

#4

35 CL REV FD

COMP FD

50d

23

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50e

EX BF

21e

35 REV CL ACT FD LIM ACT FD LIM

50f

EX

REG APPLY

EX BF

46

LINE

DRV B

50h 50g

COMP FD LINE EX

LUBE

35

25

#3

DRIVE 1-6

DRV B

39a

36a

44a

44b

44c

43 44d

12h

12i

32

12g

25b

25a 44e

25c 44f

51b

15a

25d

14a

14b

15b

14c

27a

27b

26b

51a

26a

33

LOWER CONTROL VALVE BODY (307)

29

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

3

45

39b

TCC CONTROL VALVE

2

LINE

50

#7

EX

39c

CONVERTER FEED LIMIT

GASKET

EX

SPACER PLATE (305)

PCS 1234 CL

CONV FD LIMIT

7

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

ACT FD LIM

CASE (7)

456 CL 456 CL

35 REV CL FDBK

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

PS1 456 CL

35 REV CL

ISOLATOR

EX BF

EX BF 26 CL/1234 CL FD

CONV FD

94

2-6 CLUTCH REG

26 CL EX BF

EX BF

456 CL

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

456 CL

26 CL/1234 CL FD EX BF

EX

PS1 EX

PCS 26 CL

26 CL

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

1234 CL FDBK

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

DRIVE RANGE – 6TH GEAR (Torque Converter Clutch Applied) NO 6TH GEAR

• CB26 Pressure Control Solenoid 4 - Commanded/failed LOW (OFF) - Leaking

• 2-6 Clutch Regulator Valve (334) - Stuck

• Center Support (459) - Broken - Feed hole plugged

• 2-6 Clutch Piston (457) - Leaking - Jammed or cracked

• C35R Pressure Control Solenoid 2 - Commanded/failed HIGH (OFF)

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG OFF

ON

OFF

ON

OFF

ON

APPLIED APPLIED

94A

DRIVE RANGE – 6TH GEAR (Torque Converter Clutch Applied) PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

94B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 6TH GEAR

(Torque Converter Clutch Applied)

52 55

57

2

5

5

2a

5

51 51 57

52

7 7

2

52 52 38

8

2

49

26

38

2

2

2

34

2

26 11 14

14 11

9

9

7

52 2

49

52

8

10

10 56

52

6 5 11 34 26 14

34 11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2 3

5

57

5

5 4 2

6

2

52

6

2

3

4 51

52 55

2

52

52

6

FRONT

55

52

52

55

55

➤

52

➤

55

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

17 38

34

11

10

11

49

49

9a

9

2

38f

38

10

34 38

9

11

J

50

26

40

12

11

24 52 52 27

51

25

G

51

34 24

#6

37

12

51

15 38

15

14 15 51

52 47

E

51

14 21

52 19

38 42

46

34

50

44

51

46

#7 9

30

46

34

30

53

9

46

52

52 51 C

24

29

12

52 50

29 34 52 52 31

31

34 13

14 52

2

52 34

B

48

51

51

51

44

34

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

52

21

52

#5

53

12

24a

29e

9b

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 44c

42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44b 12f

11d

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 95

52 24

2

51

12 49

52

15

13

52

18

52

41

25

19

16

52 52 16 34 14 23 51 20 21 51 28

34

31 33 13 51 22 20

22

12

41 38 50 12

34

42

47

37 9 18

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

52 31

51

52

52 54 21 36

43 13

35

12 39

52

19

51

45

38

42

19 46

24 54 28 30 51 34 33

40

37 52 39 37

44

34

51

52 52

52

2

13

12 52

40

34 52

12 17

11

50

52 38

17

52

52

12

51

25 52

20 52 20 52 52

52

49

34

9

52

40

51

51

51

39

12

51

51

24 52

52 52 52

51

51

51

2

42

37b/53b

12e 12d

34

52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 90

42a

14a

21a

31 51

16a

43

46b

19b 19c 34f 20

23

52 21 52 29

34a

34b 41

18a

24e

26

50b 50c 37d

46a

52 30

52 51

13a 2c

34j 52

24d

11e/50a

37e 41a

36

52 35

12g

19a

13b

44 50

52

52

52 52

19

29

#3 2

16

25d

15a

51

39a 12h

12i

15b

29

38b

13

34 24

17d 27b

33

13c

52 52 2 52

16

25 50

14b

24b

45

41

45

34d

39c

39b

26a 40a

17a

52 37 F

51

17b 2b

27a

50

51b

24c

52

52

45

51

#2

2

14

52 50 52 52 50

11

10c

➤

27

FRONT

39

26b

52

➤

➤ FRONT

24

24

21

38

14

51a 49a

14c 38c

17

52

52 51

21b

52

14

27 51 26

FRONT

K

49 39

2

2 52

11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10

34

52

11b 11c

10b

10

52 17

38d

52 52

9 11a

10a

38e

34e

52

2a

10

17c

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

12

52

50

51

48 32

47

47 43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

(Torque Converter Clutch Released) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH 4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

EX

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

PCS 1234 CL PCS LINE PCS TCC

SHIFT SOL 1

N.L.

OFF

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

N.L. OFF

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

PRESSURE SWITCH 3 NORMALLY CLOSED

3

SHIFT SOL 2

N.L. OFF

C35R PRESSURE CONTROL SOLENOID 2

N.H. ON

EX PS3

41a

LINE

2c

12f 12e 12d

PCS 26 CL

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

ACT FD LIM

PS1

4

SOL 2

PRESSURE SWITCH 4 NORMALLY CLOSED

SOL 1

FILTER PLATE ASSEMBLY (311)

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46a

46b

2d

32a 32b

PCS 35 REV CL

42a

51

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

35a

43a

2e

44

35 CL REV FD

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 91

47b

ACT FD LIM

PS4

FLUID PAN (29)

29b

21 28a 29a

ACT FD LIM

LINE

FLUID FILTER ASSEMBLY (26)

29c

ACT FD LIM

PCS LINE

LINE

CBR 1

29d

ACT FD LIM

ACT FD LIM

36

51c 29e

47a

PS3

24e

PCS TCC

49a

ACT FD LIM

24d

31a

EX

PS3 PS1 LINE PCS 35 REV CL

1234 CL DFLT ACT FD LIM

ACT FD LIM

1234 CL

#2

17a 31c 31b

28b

PCS 26 CL

LINE 1234 CL DFLT

ACT FD LIM ACT FD LIM

SUCTION

2b 24a 24b 24c

CSV2 LATCH

DRIVE CBR1/CBR FD

11

COMP FD

EX

EX DRIVE

10c

35 REV CL

ACT FD LIM

EX M

35 CL REV FD

R N D

REVERSE

P

SOL 1

EX

CLUTCH SELECT VALVE 2

EX

10b

PCS LINE

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

EX

17c 17d 10a

16a

22

DRIVE 1-6

REG APP

10 17b

40a

LUBE 456 CL

SOL 1

38a

LINE

COMP FD

38b

REVERSE

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SHTL TCC REGULATOR VALVE

38c

31 13b 13c

38d 38f

39 48b

CBR

DRIVE 1-6

PCS TCC

38e

9a 9b 48a

PS1

LINE

11c

ISOLATOR VALVE

12c

ACT FD LIM REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

SOL 1 35 REV CL

14 9

13a 13d 13e 30a

CBR

2a

5

12b

12a

40

13

PCS LINE

26 CL

CBR1 FDBK 19b

19a

19c

34k

34i

34g

34h

34e 34j

34a

18a

34b

34f

34c

34d

21a

21b

37d

53b

37c

37b

53a 21d

37a

21e

54a

37e

DRIVE 1-6

48 45b

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

41

PCS CBR1/456 CL

EXH

37

45a

CSV2 LATCH PS5 ACT FD LIM

50a

11d 11a

DECREASE

38

456 CL

PS5

26 11e

12

#4

CSV3 ENABLE

DRIVE 1-6

50b

LINE

20

LINE

35 CL REV FD

COMP FD

34

PCS TCC

42

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

23

CBR EX

50e 50d

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50f

EX BF

25

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

EX BF

36a

44a

44b

44c

44d

12h

12g

12i

25b

25a 44e

25c 44f

51b 25d

15a

43

EX

14a

14b

15b

14c

27a

27b

26b

51a

26a

32

#3

DRV B

50h 50g

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

LINE

33

LOWER CONTROL VALVE BODY (307)

39a

3

45

39b

29

2

50

#7

DRV B

CONVERTER FEED LIMIT

GASKET

EX

SPACER PLATE (305) 39c

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

ACT FD LIM

CASE (7) CONV FD LIMIT

7

456 CL 35 REV CL FDBK

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

456 CL

26 CL/1234 CL FD 456 CL

35 REV CL

ISOLATOR

EX BF

EX BF

456 CL

CONV FD

96

CBR1/456 CL FD

26 CL EX BF

EX BF

PS1

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

PCS 35 REV CL CBR1 FDBK

EX BF

2a

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

EX BF EX BF

LUBE

6

PS3 EX

EXH

26 CL/1234 CL FD EX BF

26 CL

EX

PS1 EX

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

2-6 CLUTCH REG

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

35 REV CL ACT FD LIM

1234 CL FDBK

EX BF EX EX BF

1234 CL

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

34l

DRIVE RANGE 3RD GEAR DEFAULT

DRIVE RANGE – 3RD GEAR DEFAULT (Torque Converter Clutch Released) NO 3RD GEAR

• Shift Solenoid 2 - Stuck ON

• C35R Pressure Control Solenoid 2 - Stuck OFF - Leaking

• CB26 Pressure Control Solenoid 4 - Stuck ON

• 3-5 Reverse Clutch Regulator Valve (336) - Stuck

• 3-5 Reverse Clutch Piston (421) - Leaking - Jammed or cracked

• 3-5 Reverse Clutch Piston Inner Seal (419) or Outer Seal (422) - Leaking - Missing

• Clutch Select Valve 3 - Stuck Open

• Compensator Feed Regulator Valve (356) - Stuck

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG OFF

OFF

OFF

OFF

ON

ON

APPLIED

APPLIED

96A

DRIVE RANGE – 3RD GEAR DEFAULT (Torque Converter Clutch Released) PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

96B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 3RD GEAR DEFAULT

(Torque Converter Clutch Released)

52 55

57

5

2a

5

51 51 57

52

7 7

2

34

52

38

8

2

2

49

49

26

38

2

2

2

7

6 5 11 34 26 14

34 52 2

26 11 14

14 11

9

9

52

➤

52

52

➤

8

10

10 56

➤

11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2 3

5

57

5

5 4 2

6

2

52

6

2

3

➤

2 4

51

52 55

2

52

52

6 5

FRONT

55

52

52

55

55

➤

52

➤

55

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

38

34

11

10

11

49

49

9a

9

2 17

38

10

34 38

9

11

12

24 50 51 25 26 52 40 52 27 52

52

G

51

#6

12

51

38

15

14 15 51

47

E

51

14 21

52 19

38 34

50

44

51

46

#7 9

30

46

34

30

53

9

46

52

C

24 52

52 51 52 50

29 34 52 31

52

31

34 13

14 52

2 52

52 34

34

B

31 51

48

51

51

51

44

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

52

21

52

#5

53

12

42a

14a 24a

29e

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44c

11d 26

50b 50c 37d

44b 12f

24e

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 97

51

52 24

2

49

18

52

41

25

19

16

52 52 16 34 14 23 51 20 21 51 28

44

34

31 33 13 51 22 20

22

12

41 38 50 12

34

42

47

37 9 18

45 18

12

34 44

12 50

18

12 12

45

29

52

51

45 12

51

52 31 52 54 21 36

43 13

35

12 39

52

19

51

45 37

38

42

19 46

24 54 28 30 51 34 33

51 40

37 52 39

34

13

12 52 52

40

52

2

34 52

51

12

52

15

13

52 52

52

12

12 17

11

50

52 38

17

52

20 52 20 52 52

52

51

25 52

52 52 52

49

34

9

52

40

51

51

51

39

12

51

51

24

51

2

42

37b/53b

12e 12d

34

52 52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 92

43

46b

46a 19b 9b 19c 34f 20

21a

21 52 29

16a

41

18a 34a

34b

23

52 30

52 51

13a 2c

34j 29

12

19a

13b

44 50

52

52

52 52

19

29

#3 2

16

24d

11e/50a

37e 41a

36

38b

13

34 24 42

46

25d

15a

51

39a 12h

12i

15b

29

52 35

12g 13c

52 52 2 52

17d 27b

33

45

16

25 52

14b

24b

15

41

50

34d

39c

39b

26a 40a

17a 37

45

17b 2b

27a

50

51b

24c

52

52

52 37

F

51

34 24

50 52 50

45

51

#2

2

14

11

10c

➤

27

FRONT

J

24

39

➤

FRONT

24

51

26b

52

FRONT

K

➤

52

52

38

17

14

51a 49a

14c 38c

21

34

52

11b

21b

52

14

27 51 26

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10 17

11c

2

11

49 39

10a

10b

10

52

11a

38d

52 52

9

17c

38e

34e

52

2a

10

38f

➤

14

26

26

➤

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47 12

52

50

51

48 47

32

43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

DRIVE RANGE 5TH GEAR DEFAULT (Torque Converter Clutch Released) 1-2-3-4 CLUTCH 3-5 REVERSE CLUTCH

4-5-6 CLUTCH ASSEMBLY (431-443)

TORQUE CONVERTER ASSEMBLY (1) COMP FD

49

COMP FD LUBE

LUBE

CASE (7) UPPER CONTROL VALVE BODY (304)

PCS 35 REV CL 26 CL 26 CL

1234 CL DFLT

456 CLUTCH BOOST VALVE

EX

SOL 1 REG APPLY PS4 REG APPLY

LINE

MANUAL VALVE

SHIFT SOL 1

N.L.

OFF

LINE PRESSURE CONTROL SOLENOID

N.H.

C1234 PRESSURE CONTROL SOLENOID 5

N.L. OFF

TCC PRESSURE CONTROL SOLENOID

N.L. OFF

3

SHIFT SOL 2

N.L. OFF

C35R PRESSURE CONTROL SOLENOID 2

N.H.

ON

EX PS3

41a

LINE

2c

12f 12e 12d

PCS 26 CL

PRESSURE SWITCH 3 NORMALLY CLOSED

ACT FD LIM

1

ACT FD LIM

PRESSURE SWITCH 1 NORMALLY CLOSED

SOL 2

4

ACT FD LIM

PRESSURE SWITCH 4 NORMALLY CLOSED

SOL 1

FILTER PLATE ASSEMBLY (311)

PCS 35 REV CL PCS CBR1/456 CL PCS CBR1/456 CL PCS 26 CL PS3 PS1 LINE CBR1/456 CL FD EX CBR 1 CBR LUBE

46a

46b

2d

32a 32b

PCS 35 REV CL

42a

51

CB26 PRESSURE CONTROL SOLENOID 4

CBR1/C456 PRESSURE CONTROL SOLENOID 3

N.L. OFF

N.H. ON

PRESSURE SWITCH 5 NORMALLY CLOSED

5

54b

30b

LUBE

CBR 1 CBR

PCS CBR1/456 CL PCS 26 CL

26 CL

LINE

PS5 43b

35a

43a

34l

2e

44

35 CL REV FD

CONTROL SOLENOID VALVE ASSEMBLY (314)

Figure 93

47b

ACT FD LIM

PS4

FLUID PAN (29)

29b

21 28a 29a

ACT FD LIM

LINE

FLUID FILTER ASSEMBLY (26)

29c

ACT FD LIM

PCS LINE

LINE

CBR 1

29d

ACT FD LIM

PS3

36

51c 29e

47a

PCS 1234 CL PCS LINE PCS TCC

PCS TCC

24e

ACT FD LIM

49a

PS1

24d

31a

EX

PS3 PS1 LINE PCS 35 REV CL

1234 CL DFLT ACT FD LIM

ACT FD LIM

1234 CL

#2

17a 31c 31b

28b

PCS 26 CL

LINE 1234 CL DFLT

ACT FD LIM ACT FD LIM

SUCTION

2b 24a 24b 24c

CSV2 LATCH

DRIVE CBR1/CBR FD

11

COMP FD

EX

EX DRIVE

10c

35 REV CL

ACT FD LIM

EX M

35 CL REV FD

R N D

REVERSE

P

SOL 1

EX

CLUTCH SELECT VALVE 2

EX

10b

PCS LINE

PRESSURES INTAKE & DECREASE (SUCTION) CONVERTER & LUBE LINE PCS LINE SOLENOID SIGNAL ACTUATOR COMPENSATOR

EX

17c 17d 10a

16a

22

DRIVE 1-6

REG APP

10 17b

40a

LUBE 456 CL

SOL 1

38a

LINE

COMP FD

38b

REVERSE

DRIVE BRAKE CSV2 ENABLE CBR1/CBR FD SOL 1 CBR1/456 CL FD

SHTL TCC REGULATOR VALVE

38c

31 13b 13c

38d 38f

39 48b

CBR

DRIVE 1-6

PCS TCC

38e

9a 9b 48a

PS1

LINE

11c

ISOLATOR VALVE

12c

ACT FD LIM REVERSE 35 CL REV FD EX DRV B

CLUTCH SELECT VALVE 3

SOL 1 35 REV CL

14 9

13a 13d 13e 30a

CBR

2a

5

12b

12a

19b

19a

19c

34k

34i

34g

34h

34e 34j

40

13

PCS LINE

26 CL

CBR1 FDBK

CBR1/456 CL FD

EX BF

34a

18a

34b

34f

34c

34d

21a

21b

37e

53b

37c

37b

53a 21d

37a

21e

54a

37d

DRIVE 1-6

48 45b

REVERSE 456 CL

11b

FLUID PUMP COVER (219)

41

PCS CBR1/456 CL

EXH

37

45a

CSV2 LATCH PS5 ACT FD LIM

50a

11d 11a

DECREASE

38

456 CL

PS5

26 11e

12

#4

CSV3 ENABLE

DRIVE 1-6

50b

LINE

20

LINE

35 CL REV FD

COMP FD

34

PCS TCC

42

456 CL

COMPENSATOR FD REG VALVE

EX

50c

COMP FD LINE EX

47

23

CBR EX

50e 50d

46

1234 CL DFLT 1234 CL DFLT FD 456 CL FD

50f

EX BF

25

DRIVE 1-6

35 REV CL ACT FD LIM ACT FD LIM

EX BF

36a

44a

44b

44c

44d

12h

12g

12i

25b

25a 44e

25c 44f

51b 25d

15a

43

EX

14a

14b

15b

14c

27a

27b

26b

51a

32

#3

DRV B

50h 50g

PCS 1234 CL

REG APPLY

LUBE COMP FD 35 REV CL 456 CL 1234 CL 1234 CL 35 REV CL 456 CL 1234 CL DFLT PS4 EX BF

35

LUBE

TCC CONTROL VALVE

LINE

33

LOWER CONTROL VALVE BODY (307)

39a

3

45

39b

29

2

50

#7

DRV B

CONVERTER FEED LIMIT

GASKET

26a

SPACER PLATE (305) 39c

35 REV FD

35R SPL #5

#1

#6

ACT FEED LIMIT VALVE

456 CL

21c

1234 CL

EX BF

EX BF EX BF

35 REV CL FDBK

EX

CONV FD LIMIT

7

456 CL 35 REV CL FDBK

ACT FD LIM

CASE (7)

456 CL

GASKET

EXH

LINE

PRESSURE REGULATOR VALVE

CBR1/456 CL FD DRIVE 1-6 PS1

456 CL

26 CL/1234 CL FD 456 CL

35 REV CL

ISOLATOR

26 CL/1234 CL FD EX BF

26 CL

EX BF

PS1

1

LINE DRIVE 1-6 PS5 EX

PS3

35 REV CL

FRONT LUBE

EX

EX BF EX BF

CONV FD

98

EXHAUST BACKFILL EXH PRESSURE RELIEF VALVE

EX BF

PCS 35 REV CL CBR1 FDBK

EX BF

2a

PS3 EX

EXH

EX BF EX BF

LUBE

6

2-6 CLUTCH REG

EX

PS1 EX

456 CL

PCS CBR1/456 CL EX

PS3

EX BF EX BF

FLUID PRESSURE TEST PLUG (40)

PCS 26 CL

26 CL

EX

PCS CBR1/456 CL

35 REV FD PCS 35 REV CL 35 REV CL FDBK

35 REV CL ACT FD LIM

1234 CL FDBK

EX

35R CLUTCH BOOST VALVE

3-5 REV CLU REGULATOR VALVE

EX BF EX EX BF

1234 CL

1234 CL FD PS4 EX

PCS 1234 CL

1234 CL DFLT PS4

COMP FD 35 REV CL 456 CL 1234 CL

LUBE

1234 CL 1234 CL FDBK EX

1-2-3-4 CLUTCH REGULATOR VALVE SHTL

1234 CLUTCH BOOSTVALVE

PCS 1234 CL

TCC APPLY

COOLER FEED

TCC RELEASE

PS4

2-6 GAIN

LUBE

PCS 35 REV CL

PCS 1234 CL

PRESSURE RELIEF VALVE (LOCATED IN PUMP)

LUBE

456 CL

456 CL LUBE

COOLER

LOW & REVERSE CLUTCH ASSEMBLY (461-470)

2-6 CLUTCH ASSEMBLY (450-457)

CBR1/C456 CLU REG VALVE

TCC APPLY

COOLER FEED

26 CL CBR CBR 1

CENTER SUPPORT ASSEMBLY (459)

DRIVE RANGE – 5TH GEAR DEFAULT (Torque Converter Clutch Released) NO 5TH GEAR

• C35R Pressure Control Solenoid 2 - Stuck OFF - Leaking

• C1234 Pressure Control Solenoid 5 - Stuck ON

• 3-5 Reverse Clutch Regulator Valve (336) - Stuck

• 3-5 Reverse Clutch Piston (421) - Leaking - Jammed or cracked

• 3-5 Reverse Clutch Piston Inner Seal (419) or Outer Seal (422) - Leaking - Missing

• Clutch Select Valve 3 - Stuck Closed

• Compensator Feed Regulator Valve (356) - Stuck

SHIFT SHIFT 1-2-3-4 CL 2-6 CL 3-5 REV CL 4-5-6 CL LOW LOW 1-2-3-4 3-5 REV 4-5-6 2-6 SOL SOL PC PC PC PC & REV CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH 1 2 SOL 5 N.L. SOL 4 N.L. SOL 2 N.H. SOL 3 N.H. CLUTCH SPRAG OFF

OFF

OFF

OFF

ON

ON

APPLIED APPLIED

98A

DRIVE RANGE – 5TH GEAR DEFAULT (Torque Converter Clutch Released) PASSAGES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

98B

SUCTION LINE DECREASE CONVERTER FEED CONVERTER FEED LIMIT TCC RELEASE TCC APPLY COOLER FEED CENTER LUBE REGULATOR APPLY COMPENSATOR FEED ACTUATOR FEED LIMIT REVERSE 35 REVERSE CLUTCH 35 REVERSE CLUTCH FEEDBACK CSV2 ENABLE SOLENOID 1 SOLENOID 2 CSV3 ENABLE DRIVE DRIVE 1-6 DRIVE BRAKE 1234 CLUTCH DEFAULT FEED 1234 CLUTCH DEFAULT 1234 CLUTCH FEED 1234 CLUTCH 1234 CLUTCH FEEDBACK CBR1/CBR FEED CBR1 CBR CBR1/456 CLUTCH FEED CBR1 FEEDBACK 456 CLUTCH FEED 456 CLUTCH CSV2 LATCH DRIVE B 35 REVERSE FEED PCS TCC PCS 1234 CLUTCH PCS 4 PCS 1 PCS 3 PCS 5 26 CLUTCH/1234 CLUTCH FEED PCS 35 REVERSE CLUTCH 26 CLUTCH PCS 26 CLUTCH PCS CBR1/456 CLUTCH PCS LINE EXHAUST BACKFILL EXHAUST VOID 35 REVERSE SUPPLY 35 REVERSE CLUTCH FEED VENT TORQUE CONV SEAL DRAINBACK FRONT LUBE

DRIVE RANGE 5TH GEAR DEFAULT

(Torque Converter Clutch Released)

52 55

57

5 4

2a

5

51 51 57

52

7 7

2

52 52 38

8

2

2

49

49

26

38

2

2

2

➤

34 52 2

26 11 14

14 11

9

9

52

➤

8

10

10 56

52 7

6 5 11 34 26 14

34 11

7

1

5

52 51

7

7 1

52

6

6

5

6 5

7 51

51 56

8

4

3

2

1

51

2 3

5

57

5

5

2 6

2

52

6

2

3

➤

2 4

51

52 55

2

52

52

6 5

FRONT

55

52

52

55

55

➤

52

➤

55

46

30

9

29

52

52 52 10

49

52 52

52 10 52 52

9

49

1

10

9

38

38

9

1-2-3-4 & 3-5 REV CL SUPPORT (219) (Pump Side)

34

2

2

FLUID PUMP COVER (219) (Torque Converter Housing Side)

10 14 11 26 49

1

FLUID PUMP COVER (219) (Case Side)

52

NOTE: –

INDICATES BOLT HOLES

– NON FUNCTIONAL HOLES HAVE BEEN REMOVED FROM COMPONENT DRAWINGS TO SIMPLIFY TRACING FLUID FLOW. – DUAL PURPOSE PASSAGES HAVE UPPER VALVE BODY SIDE NUMBERS LISTED FIRST.

CASE (7) (Upper Valve Body Side)

– EXHAUST FLUID NOT SHOWN.

34

10

11

49

49

38

10

34 38

9

11

12

24 50 51 25 26 52 40 52 27 52

52

G

51

#6

12

51

38

15

14 15 51

47

E

51

14 21

52 19

38 34

50

44

51

46

#7 9

30

46

34

30

53

9

46

52

C

24 52

52 51 52 50

29 52

34 52 31

31

34 13

14 52

2 52

52 34

34

B

31 51

48

51

51

51

44

A

#1

43 31 51 48 51 50 2 21 51

2

35

2 52

#4

32 52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Case Side)

12 12

13

32

51 51

52

21

52

#5

53

12

42a

14a 24a

29e

25c

34

47

32 38a 25a/44e 34i 44d

37a/53a 42

45b

51

48

52 13 52

37c 40

45a

25b/44f

44c

11d 26

50b 50c 37d

44b 12f

24e

52

50d 47b 34h 50e

50f

29d 30b/54b 30a 21 29c 34k 28a/29a 34g 34c 51 50g 31a 47a 31b 31c 21d 48b 12a 44a 54a 13d 12 36a 31 50h 21c 21e 12b 32b 32a 43a 39 51c 43b 34l 37 13e 38 48a 35a 2e 12c 2d 28b/29b

CONTROL VALVE BODY SPACER PLATE ASSEMBLY (305) (Upper Valve Body Side)

FOLDOUT ➤ 99

51

52 24

2

34

9

52 52

52 52

18

52

52 52

13

52 52

12

16

52 52 16 34 14 23 51 20 21 51 28

20 52 20 52 52

34

44

31 33 13 51 22 20

24 54 28 30 51 34 33

51 22

12

12 41 39 38

38

50 12 34

42

47

37

9 18

12

34 44

12

18

50

18

12 12

45

29

52

51

45 12

51

52 31 52 54 21 36

43 13

35

45

52

19

51 40

37 52 39 37

42

19 46

34 52

12

41

34 52

49

52 52

25

19

51

12

52

52

2

12 17

11

25

15

13

51

50

40

52 38

17

52

49

51

51

51

39

12

51

51

24

51

2

42

37b/53b

12e 12d

34

52 52

52

44

52

CONTROL VALVE UPPER BODY ASSEMBLY (304) (Spacer Plate Side)

Figure 94

43

46b

46a 19b 9b 19c 34f 20

21a

21 52 29

16a

41

18a 34a

34b

23

52 30

52 51

13a 2c

34j 29

12

19a

13b

44 50

52

52

52 52

19

29

#3 2

16

24d

11e/50a

37e 41a

36

38b

13

34 24 42

46

25d

15a

51

39a 12h

12i

15b

29

52 35

12g 13c

52 52 2 52

17d 27b

33

45

16

25 52

14b

24b

15

41

50

34d

39c

39b

26a 40a

17a 37

45

17b 2b

27a

50

51b

24c

52

52

52 37

F

51

34 24

50 52 50

45

51

#2

2

14

11

10c

➤

27

FRONT

J

24

39

➤

FRONT

24

26b

52

FRONT

K

➤

52

52 51

21

38

17

14

51a 49a

14c 38c

34

52

11b

21b

52

14

27 51 26

2 51 52 11 38 10 38 2 51 51 52 10 52 11 52 21 39 52 14 26 51 52 49 51 39 52 52 52 38 27 52 17 10 17

11c

2

11

49 39

10a

10b

10

52

11a

38d

52 52

9

17c

38e

34e

52

2a

10

38f

➤

38

11

9a

9

2 17

➤

14

26

26

14

2

FRONT

9

FRONT

TORQUE CONVERTER HOUSING (204) (Fluid Pump Cover Side)

44

51

52 47 12

52

50

51

48 47

32

43

48 52 52 52 2

51

51 52

12

2

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Spacer Plate Side)

CONTROL VALVE LOWER BODY ASSEMBLY (307) (Control Solenoid Valve Assembly Side)

LUBRICATION POINTS COOLER AND LUBRICATION CIRCUITS COOLER CIRCUIT:

• • • FRONT LUBE FLUID FROM CONVERTER FEED

• OIL PUMP ASSEMBLY

•

Line pressure from the fluid pump assembly is directed to the pressure regulator valve (223) located inside the fluid pump cover assembly (219). Line pressure passes through the pressure regulator valve (223) and enters the converter feed fluid circuit. Converter feed fluid is routed to the converter feed limit valve (220) where it passes through the valve into the converter feed limit circuit. Converter feed limit fluid is routed to the TCC control valve (227) where it passes through the valve into the TCC release circuit. Release fluid passes through the fluid pump cover assembly (219) and flows between the stator shaft

•

•

•

(part of the pump cover assembly) and the turbine shaft [part of the 4-5-6 clutch housing assembly (441)]. Release fluid enters a passage in the turbine shaft and flows to the release side of the torque converter clutch pressure plate. Release fluid then passes around the pressure plate and enters the apply side of the converter clutch pressure plate. TCC apply fluid from the torque converter assembly (1) is then routed back to the TCC control valve (227) where it passes through the valve and enters the cooler feed fluid circuit. Cooler feed fluid is routed through the fluid pump cover assembly (219), into the torque converter housing (203) and is sent to the transmission cooler located inside the radiator. Note: In TCC apply mode, converter feed limit fluid is routed through the TCC control valve (227) into the cooler feed circuit and does not enter the torque converter.

REAR LUBE REAR LUBE (COMP FEED)

Center Lube

•

•

CENTER LUBE FROM COOLER

LUBRICATION CIRCUITS: Front Lube

Rear Lube

•

•

•

100

Figure 95

Fluid leaving the transmission cooler enters the center lube circuit at the torque converter housing (203) and is routed to the fluid pump cover assembly (219). Center lube passes through the fluid pump cover and is directed to a passage in the control valve assembly (21) and then to the center support (67). Center lube fluid lubricates the center transmission components.

Converter feed limit fluid passes through the pump cover assembly (219) and enters a passage located in the stator shaft. Lube then passes between the stator shaft and turbine shaft and flows throughout the front components of the transmission.

Compensator feed fluid inside the 45-6 (w/turbine shaft) clutch assembly is fed into the 4-5-6 clutch hub assembly center passage where it passes through an orifice to lube the rear case and extension bushings.

Bushing, Bearing and Washer Locations 426

229

218

440

458

428 57

460 488

63

498

69

491

35

206

228

59

54

65

60

55

13. 35. 54. 55. 57. 59. 60. 62. 63. 65. 69. 71. 206. 218. 228. 229.

Output Shaft Bushing Prop Shaft Front Slip Yoke Bushing Input Sun Gear Thrust Bearing Input Sun Gear Thrust Washer Turbine Shaft Thrust Bearing Assembly 4–5–6 Clutch Hub Thrust Bearing Assembly Output Carrier Inner Sun Gear Shaft (Front) Bushing Output Carrier Inner Sun Gear Shaft Bushing 1–2–3–4 Clutch Hub Thrust Bearing Assembly 2–6 and 3–5 Reverse Clutch Hub Thrust Bearing Assembly Output Carrier Thrust Bearing Assembly Output Shaft Thrust Bearing Assembly Torque Converter Bushing Turbine Shaft Front Bushing Turbine Shaft Rear Bushing 1–2–3–4 and 3–5 Reverse Clutch Housing Thrust Washer

485

486

62

71

13

426. 1–2–3–4 and 3–5 Reverse Clutch Housing Rear Bushing 428. 1–2–3–4 and 3–5 Reverse Clutch Bearing Assembly 440. Output Carrier Shaft Housing Bushing 458. Output Carrier Outer Sun Gear Shaft (Front) Bushing 460. Output Carrier Outer Sun Gear Shaft Rear Bushing 485. Center Support Roller Bearing Assembly 486. Output Carrier Front Sun Gear Thrust Bearing Assembly 488. Output Carrier Front Sun Gear Rear Thrust Bearing Assembly 491 Output Carrier Rear Sun Gear Thrust Bearing Assembly-Captured 498. Output Carrier Bushing

Figure 96

1555272-A

101

Seal Locations 412 209

210

5

213

230

418

416

457 442

10

9

201 468 14

33 36

443

510 205

27

419 470 18-19

25

422

425

424

20

423 439

5. 9. 10. 14. 18. 19. 20. 25. 27. 33. 36. 201. 205. 209. 210. 213. 230.

A/Trans Fluid Pump Seal A/Trans Connector Seal A/Trans Connector (O-ring) Seal Output Shaft Seal Assembly A/Trans Fluid Pump Seal Assembly A/Trans Fluid Pump Seal Assembly Center Support Fluid Passage Seal Assembly A/Trans Fluid Filter Seal Assembly A/Trans Fluid Pan Gasket A/Trans Case Extension Seal Prop Shaft Front Slip Yoke Oil Seal Torque Converter Fluid Seal Assembly Trans Fluid Cooler Pipe Fitting Seal A/Trans Fluid Pump Slide Fluid Seal Ring A/Trans Fluid Pump Slide (O-ring) Seal A/Trans Fluid Pump Slide Seal 1–2–3–4 and 3–5 Reverse Clutch Fluid Seal Ring

412. 416. 418. 419. 422. 423. 424. 425. 437. 439. 442. 443. 457. 468. 470. 507. 510.

507

437

1–2–3–4 Clutch Piston Dam Assembly 1–2–3–4 Clutch Piston Seal 3–5 Reverse Clutch Piston Dam (O-ring) Seal 3–5 Reverse Clutch Piston Inner Seal 3–5 Reverse Clutch Piston Outer Seal 1–2–3–4 Clutch Piston Inner Seal 1–2–3–4 Clutch Piston Housing Seal 1–2–3–4 Clutch Piston Housing Seal 4–5–6 Clutch Piston Dam Assembly 4–5–6 Clutch Piston Assembly Turbine Shaft Fluid Seal Ring Turbine Shaft (O-ring) Seal 2–6 Clutch Piston Assembly Low Clutch Sprag Seal Low and Reverse Clutch Piston Assembly Manual Shift Shaft Seal Park Pawl Actuator Guide (O-ring) Seal 1555274-A

102

Figure 97

ILLUSTRATED PARTS LIST

103

Case and Associated Parts 16 9

15

11

10

17

12

8

7 5

13

6

2

14

12

3 1 34 18

33

20

19

4

36

21

35

25 22 23

24

2

26

29 27

28

32

29

4

30 2

31

32

4

1537630-A

104

Figure 98

Case and Associated Parts Legend 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18.

Torque Converter Assembly Torque Converter (with Fluid Pump) Housing Assembly - Model Dependent Bolt, M10 x 50 mm Torque Converter Housing Access Hole Cover A/Trans Fluid Pump Seal Torque Converter Housing Locator Pin A/Trans Case Assembly Transmission Fluid Fill Tube Plug Assembly– Model Dependent A/Trans Connector Seal A/Trans Connector (O-ring) Seal A/Trans Electrical Connector Passage Sleeve A/Trans Case Plug Output Shaft Bushing Output Shaft Seal Assembly A/Trans Case Extension – Model Dependent Bolt, M10 x 40 mm A/Trans Case Extension Stud – Model Dependent A/Trans Fluid Pump Seal Assembly

19. 20. 21. 22 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36.

A/Trans Fluid Pump Seal Assembly Center Support Fluid Passage Seal Assembly Control (with Body and Valve) Valve Assembly Bolt, M5 x 73 mm Bolt, M6 x 14.5 mm Manual Shaft Detent Assembly A/Trans Fluid Filter Seal Assembly A/Trans Fluid Filter Assembly A/Trans Fluid Pan Gasket A/Trans Fluid Pan Magnet A/Trans Fluid Pan Assembly– Model Dependent Bolt, M6 x 16 mm Trans Oil Level Check Plug – Model Dependent Torque Converter Housing Access Hole Cover – Model Dependent A/Trans Case Extension Seal– Model Dependent A/Trans Case Extension– Model Dependent Prop Shaft Front Slip Yoke Bushing– Model Dependent Prop Shaft Front Slip Yoke Seal– Model Dependent

105

Clutch Assemblies and Associated Parts 58 57 56

55 54

51

52

53

67 66 65 64

63

61

62

60

59

71

70

69 68

70

51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61.

106

1–2–3–4 and 3–5 Reverse Clutch Assembly Input Carrier Assembly Input Sun Gear Input Sun Gear Thrust Bearing Input Sun Gear Thrust Washer 4–5–6 (w/ Turbine Shaft) Clutch Assembly Turbine Shaft Thrust Bearing Assembly 4–5–6 Clutch (w/ Output Carrier Shaft and Dampener) Hub Assembly 4–5–6 Clutch Hub Thrust Bearing Assembly Output Carrier Inner Sun Gear Shaft (Front) Bushing 1–2–3–4 Clutch (w/ Output Carrier Inner Sun Gear Shaft) Hub Assembly

62. 63. 64. 65. 66. 67. 68. 69. 70. 71.

Output Carrier Inner Sun Gear Shaft Bushing 1–2–3–4 Clutch Hub Thrust Bearing Assembly 2–6 and 3–5 Reverse Clutch (w/ Output Carrier Outer Sun Gear Shaft) Hub Assembly 2–6 and 3–5 Reverse Clutch Hub Thrust Bearing Assembly Center Support Retaining Ring Center (w/ 2–6 Low and Reverse Clutch) Support Assembly Output Carrier Assembly Output Carrier Thrust Bearing Assembly Output Shaft Assembly – Model Dependent Output Shaft Thrust Bearing Assembly 1537631

Figure 99

Torque Converter (w/Fluid Pump) Housing Assembly 203 204 214

213 204 210 208

203

207

202

212

206

211 209

205

201 200 203

222 221 204 220

223 224 225

222 226 227

219 230 228

218 216

229

207 231 233

234

232

235 217 236

200. 201. 202. 203. 204. 205. 206. 207. 208. 209. 210. 211. 212. 213. 214. 215. 216. 217. 218. 219. 220.

Torque Converter Fluid Seal Retaining Ring 215 Torque Converter Fluid Seal Assembly Line Pressure Test Hole Plug Torque Converter Housing – Model Dependent A/Trans Vent Pipe – Model Dependent Trans Fluid Cooler Pipe Fitting Seal Torque Converter Bushing A/Trans Fluid Pump Vane Ring A/Trans Fluid Pump Rotor Guide A/Trans Fluid Pump Slide Fluid Seal Ring A/Trans Fluid Pump Slide (O-ring) Seal A/Trans Fluid Pump Slide Outer Spring A/Trans Fluid Pump Slide A/Trans Fluid Pump Slide Seal A/Trans Fluid Pump Slide Seal Support A/Trans Fluid Pump Slide Pivot Pin A/Trans Fluid Pump Vane A/Trans Fluid Pump Rotor Turbine Shaft Front Bushing A/Trans Fluid Pump Cover Assembly Converter Feed Limit Valve

223 237

221. 222. 223. 224. 225. 226. 227. 228. 229. 230. 231. 232. 233. 234. 235. 236. 237.

Figure 100

Converter Feed Limit Valve Spring Valve Spring Retainer Pressure Relief Ball Valve Spring Pin Pressure Relief Ball Valve Spring Pressure Relief Ball Valve TCC Control Valve Spring TCC Control Valve Turbine Shaft Rear Bushing 1–2–3–4 and 3–5 Reverse Clutch Housing Thrust Washer 1–2–3–4 and 3–5 Reverse Clutch Fluid Seal Ring Bolt, M6 x 40 mm A/Trans Fluid Pump Locator Pin Pressure Regulator Valve Pressure Regulator Valve Outer Spring Pressure Regulator Valve Inner Spring Isolator Valve Isolator Valve Sleeve 1537636

107

Control (with Body and Valve) Valve Assembly 316 303

302

302

316 301

304

306

305

301. Bolt, M5 x 36 mm 302. Bolt, M6 x 20 mm 303. A/Trans Input and Output Speed Sensor Assembly 304. Control Valve Upper Body Assembly 305. Control Valve Body Spacer (w/ Gasket) Plate Assembly 306. Control Valve Body Ball Check Valve 307. Control Valve Lower Body Assembly 308. A/Trans Manual Shift Shaft Position Switch Assembly 309. Bolt, M5 x 45 mm 310. Bolt, M5 x 55 mm 311. Filter Plate Assembly 312. Bolt, M5 x 53 mm 314. Control Solenoid (w/ Body and TCM) Valve Assembly 315. A/Trans Manual Shaft Position Switch Wiring Harness Clip 316. A/Trans Input and Output Speed Sensor Wiring Harness Clip

307

308

310

315 309

311

312

314

310

309

1537647

108

Figure 101

Upper Control Valve Body Assembly

313

322

313

321

329 326

330 337

326

323 336

338

325 329

328

328 323

324

326

323

330

323

334 323

335

329 313

323

326

330

328

327

323 328 323

313. 321. 322. 323. 324. 325. 326. 327. 328. 329. 330. 334. 335. 336. 337. 338.

Control Valve Body Locator Pin Control Valve Upper Body Control Valve Body Locator Pin Retainer Actuator Feed Limit Valve Spring Actuator Feed Limit Valve Clutch Regulator Valve Spring 1st/Reverse Band and 4–5–6 Clutch Regulator Valve Clutch Regulator Valve Bore Plug Clutch Boost Valve Clutch Boost Valve Spring 2–6 Clutch Regulator Valve 2–6 Clutch Regulator Valve Gain Valve 3–5 Reverse Clutch Regulator Valve 1–2–3–4 Clutch Regulator Valve Shuttle Valve

1537644

Figure 102

109

Lower Control Valve Body Assembly

328

323

353 352

351 323 353

328

356 352 357 323

323

353 355 338

328

354

323. 328. 338. 351. 352. 353. 354. 355. 356. 357.

Retainer Clutch Regulator Valve Bore Plug Shuttle Valve Control Valve Lower Body Clutch Select Solenoid Valve Clutch Select Solenoid Valve Spring Manual Valve TCC Regulator Apply Valve Clutch Piston Dam Feed Regulator Valve Clutch Piston Dam Feed Regulator Valve Spring

1537645

110

Figure 103

1-2-3-4 and 3-5 Reverse Clutch Assembly 400 401 402 403 403

405

404 429 407 408 409

402 409

410

412

411

414 415

413

416 417

408 420

419

418

421 422 425 427

424 423

426 428

400. 3–5 Reverse Clutch Backing Plate Retaining Ring 401. 3–5 Reverse Clutch Backing Plate 402. 3–5 Reverse Clutch Plate Assembly 403. 3–5 Reverse Clutch Plate 404. 3–5 Reverse Clutch (Waved) Plate 405. 3–5 Reverse Clutch Apply Ring 407. 1–2–3–4 Clutch Backing Plate 408. 1–2–3–4 Clutch Plate Assembly 409. 1–2–3–4 Clutch Plate 410. 1–2–3–4 Clutch (Waved) Plate 411. 1–2–3–4 Clutch Piston Dam Retaining Ring 412. 1–2–3–4 Clutch Piston Dam Assembly 413. 1–2–3–4 Clutch Spring 414. 1–2–3–4 Clutch Piston 415. 1–2–3–4 Clutch Piston Housing Retaining Ring 416. 1–2–3–4 Clutch Piston Seal

417. 418. 419. 420. 421. 422. 423. 424. 425. 426.

1–2–3–4 Clutch Piston Housing 3–5 Reverse Clutch Piston Dam (O-ring) Seal 3–5 Reverse Clutch Piston Inner Seal 3–5 Reverse Clutch Spring 3–5 Reverse Clutch Piston 3–5 Reverse Clutch Piston Outer Seal 1–2–3–4 Clutch Piston Inner Seal 1–2–3–4 Clutch Piston Housing Seal 1–2–3–4 Clutch Piston Housing Seal 1–2–3–4 and 3–5 Reverse Clutch Housing Rear Bushing 427. 1–2–3–4 and 3–5 Reverse Clutch Housing Assembly 428. 1–2–3–4 and 3–5 Reverse Clutch Bearing Assembly 429. 1–2–3–4 Clutch Backing Plate Retaining Ring

Figure 104

1537632

111

4-5-6 (with Turbine Shaft) Clutch Assembly 431 432 433 434

434

435

437

436

438

433 439 441 440 442

443

431. 432. 433. 434. 435. 436. 437. 438. 439. 440. 441. 442. 443.

4–5–6 Clutch Backing Plate Retaining Ring 4–5–6 Clutch Backing Plate 4–5–6 Clutch Plate Assembly 4–5–6 Clutch Plate 4–5–6 Clutch (Waved) Plate 4–5–6 Clutch Piston Dam Retaining Ring 4–5–6 Clutch Piston Dam Assembly 4–5–6 Clutch Spring 4–5–6 Clutch Piston Assembly Output Carrier Shaft Housing Bushing 4–5–6 (w/ Turbine Shaft) Housing Assembly Turbine Shaft Fluid Seal Ring Turbine Shaft (O-ring) Seal

1537634

112

Figure 105

2-6 Clutch Assembly 454

452

453 452 451 450

453

460 459 458 457 456 455

450. 451. 452. 453. 454. 455. 456. 457. 458.

2–6 Clutch Backing Plate Retaining Ring 2–6 Clutch Backing Plate 2–6 Clutch Plate Assembly 2–6 Clutch Plate 2–6 Clutch (Waved) Plate 2–6 Clutch Spring Retaining Ring 2–6 Clutch Spring 2–6 Clutch Piston Assembly Output Carrier Outer Sun Gear Shaft (Front) Bushing 459. Center Support Assembly 460. Output Carrier Outer Sun Gear Shaft Rear Bushing

1537637

Figure 106

113

Low and Reverse Clutch Assembly 462

461

464 463 464 465

463

467

466

469 468

470 459

459. Center Support Assembly 461. Low and Reverse Clutch Backing Plate Retaining Ring 462. Low and Reverse Clutch Backing Plate 463. Low and Reverse Clutch Plate Assembly 464. Low and Reverse Clutch Plate 465. Low and Reverse Clutch (Waved) Plate 466. Low and Reverse Clutch Spring Retaining Ring 467. Low Clutch Sprag Assembly 468. Low Clutch Sprag Seal 469. Low and Reverse Clutch Spring 470. Low and Reverse Clutch Piston Assembly

1537639

114

Figure 107

4-5-6 Clutch Hub Assembly 478 477 476

475

475. 4–5–6 Clutch (w/ Output Carrier Shaft) Hub Assembly 476. 4–5–6 Clutch Dampener 477. 4–5–6 Clutch Dampener Apply Plate 478. 4–5–6 Clutch Dampener Retaining Ring

1550019

Figure 108

Output Carrier Assembly 490

491 489 488 487 486 485

485. Center Support Roller Bearing Assembly 486. Output Carrier Front Sun Gear Thrust Bearing Assembly 487. Output Carrier Front Sun Gear 488. Output Carrier Front Sun Gear Rear Thrust Bearing Assembly 489. Output Carrier Rear Sun Gear 490. Output Carrier 491. Output Carrier Rear Sun Gear Thrust Bearing Assembly– Captured 1537641 Figure 109

115

Output Shaft Assembly 499 498 497 496 494 495 494

499

494. 495. 496. 497. 498. 499.

Output Output Output Output Output Output

Carrier Internal Gear Retaining Ring Carrier Internal Front Gear Carrier Internal Gear Spacer Carrier Internal Rear Gear Carrier Bushing Shaft Assembly – Model Dependent 1537635

Figure 110

116

Park System Components 504

503

505

502

506

501

507 508

511

509

510 500 12

12. 500. 501. 502. 503. 504. 505. 506. 507. 508. 509. 510. 511.

A/Trans Case Plug Park Pawl Shaft Park Pawl Spring Park Pawl Park Pawl Actuator Assembly Manual Shaft Detent Lever Hub Pin Manual Shaft Detent Lever Assembly Manual Shift Shaft Pin Manual Shift Shaft Seal Manual Shift Shaft Park Pawl Actuator Guide Park Pawl Actuator Guide (O-ring) Seal Park Pawl Actuator Guide Pin 1537643

Figure 111

117

BASIC SPECIFICATIONS

HYDRA-MATIC 6 Speed RWD TRANSMISSION Produced at: Ypsilanti, MI (USA)

HYDRA-MATIC 6L80

Transmission Drive Rear Wheel Drive All Wheel Drive 4-Wheel Drive Transmission Type 6: Six Speed L: Longitudinal Mount 80: Product Series Electronic Controls

Maximum Gross Vehicle Weight 1745 - 2360 kg (3847 - 5203 lb) Transmission Fluid Type Dexron® VI Transmission Fluid Capacity (Approximate) 258 mm Converter (Dry): 9.7 L (10.3 qt) 300 mm Converter (Dry): 11.9 L (12.6 qt) Bottom Pan Removal: 6.2L (6.5 qt)

Automatic Overdrive with a Torque Converter Clutch Assembly.

Current Engine Range 4.4 L - 6.0 L Gasoline Control Systems Shift Pattern – PC Solenoids & on/off solenoids Shift Quality – Pressure Control Solenoid Torque Converter Clutch – Pressure Control Solenoid Gear Ratios 1st 2nd 3rd 4th 5th 6th Rev

6L80 4.027 2.364 1.532 1.152 0.852 0.667 3.064

Maximum Engine Torque 6L80: 583 N•m (430 lb ft) Sustained Input Speed 6L80: 6,500 RPM

118

Transmission Weight w Torque Converter (Wet) 6L80: 96 - 104 kg (212 - 229 lb) Converter Sizes Available 258 / 300 mm Converter Stall Torque Ratio Range 258 mm Converter – 1.7 300 mm Converter – 1.9 Converter “K” Factor Range 258 mm Converter – 112 to 146 K 300 mm Converter – 101 K Not all “K” Factors are applicable across the range of Converter Stall Torque Ratios.

Pressure Taps Available Line Pressure Information may vary with application. All information, illustrations and specifications contained in this book are based on the latest product information available at the time of publication. The right is reserved to make changes at any time without notice.

HYDRA-MATIC PRODUCT DESIGNATION SYSTEM The product designation system used for all Hydra-matic transaxles and transmissions consists of a series of numbers and letters that correspond with the special features incorporated in that product line. The first character is a number that designates the number of forward gear ranges available in that unit. For example: 6 = six forward gear ranges. The second character is a letter that designates how the unit is mounted in the vehicle. When the letter “T” is used, it designates that the unit is transversely mounted and is used primarily for front wheel drive vehicles. The letter “L” designates that it is longitudinally mounted in the vehicle and it is used primarily for rear wheel drive vehicles. The letter “M” designates that the unit is a manual transaxle or transmission but not specific to a front or rear-wheel drive vehicle application.

The third and fourth characters consists of a set of numbers, (i.e. “80”), that designate the transaxle or transmission “Series” number. This number signifies the relative torque capacity of the unit. There is no fifth character used on the new transmissions to designate electronic controls, as all the new Hydra-matic transmission incorporate electronic controls. By using this method of classification, the HYDRA-MATIC 6L80 is a 6-speed, longitudinally-mounted, 80 series unit.

HYDRA-MATIC 6L80 HYDRA-MATIC

6

L

80

Number of Speeds: 4 5 6

Type: T - Transverse L - Longitudinal M - Manual

Series: Based on Relative Torque Capacity

119

GLOSSARY OF TECHNICAL TERMS Adaptive Learning: Programming within the TCM that automatically adjusts hydraulic pressures in order to compensate for changes in the transmission (i.e. component wear). Applied: An apply component that is holding another component to which it is splined or assembled with. Also referred to as “engaged”. Apply Components: Hydraulically operated clutches, servos, bands, and mechanical one-way roller or sprag clutches that drive or hold members of a planetary gear set.

De-energize(d): To interrupt the electrical current that flows to an electronically controlled device making it electrically inoperable. Downshift: A change in a gear ratio where input speed and torque increases. Driver Shift Control: A selector system variant which is configured to be shifted only manually, and allows for engine braking in first, second, third and fourth gears. Duty Cycle: In reference to an electronically controlled solenoid, it is the amount of time (expressed as a percentage) that current flows through the solenoid coil.

Apply Plate: A steel clutch plate in a clutch pack located next to the (apply) piston.

Engine Control Module (ECM): An electronic device that manages the electrical system of the engine.

Backing Plate: A steel plate in a clutch pack that is usually the last plate in that clutch assembly (farthest from the clutch piston).

Energize(d): To supply a current to an electronically controlled device enabling it to perform its designed function.

Ball Check Valve: A spherical hydraulically controlled component (made of steel or plastic) that either seals or opens fluid circuits. It is also referred to as a check valve or checkball.

Engine Compression Braking: A condition where compression from the engine is used with the transmission to decrease vehicle speed. Braking (slowing of the vehicle) occurs when a lower gear ratio is manually selected by moving the gear selector lever.

Brake Switch: An electrical device that provides signals to the Transmission Control Module (TCM) based on the position of the brake pedal. The TCM uses this information to apply or release the torque converter clutch (TCC).

Exhaust: The release of fluid pressure from a hydraulic circuit. (The words exhausts and exhausting are also used and have the same intended meaning.)

Centrifugal Force: A force that is imparted on an object (due to rotation) that increases as that object moves further away from a center/point of rotation. Clutch Pack: An assembly of components generally consisting of clutch plates, an apply plate and a backing plate. Clutch Plate: A hydraulically activated component that has two basic designs: (1) all steel, or (2) a steel core with friction material bonded to one or two sides of the plate. Compensator: A component of the transmission that absorbs hydraulic pressure during the apply of a clutch. Controlled in the circuit with a regulator valve. Component: Any physical part of the transmission. Control Valve Body: A machined metal casting that contains valve trains and other hydraulically controlled components that shift the transmission. Coupling Speed: The speed at which a vehicle is traveling and no longer requires torque multiplication through the torque converter. At this point the stator free wheels to allow fluid leaving the turbine to flow directly to the pump. (See torque converter) 120

Fluid: Generally considered a liquid or gas. In this publication fluid refers primarily to “transmission fluid”. Fluid Pressure: A pressure (in this textbook usually transmission fluid) that is consistent throughout its circuit. Force: A measurable effort that is exerted on an object (component). Freewheeling: A condition where power is lost through a driving or holding device (i.e. roller or sprag clutches). Friction Material: A heat and wear resistant fibrous material bonded to clutch plates and bands. Gear: A round, toothed device that is used for transmitting torque through other components. Gear Range: A specific speed to torque ratio at which the transmission is operating (i.e. 1st gear, 2nd gear etc.). Gear Ratio: Revolutions of an input gear as compared to the revolutions of an output gear. It can also be expressed as the number of teeth on a gear as compared to the number of teeth on a gear that it is in mesh with. Hydraulic Circuit: A fluid passage which often includes the mechanical components in that circuit designed to perform a specific function.

GLOSSARY OF TECHNICAL TERMS Input: A starting point for torque, revolutions or energy into another component of the transmission. Internal Gear: The outermost member of a gear set that has gear teeth in constant mesh with planetary pinion gears of the gear set. Internal Leak: Loss of fluid pressure in a hydraulic circuit. Land (Valve Land): The larger diameters of a spool valve that contact the valve bore or bushing. Line Pressure: The main fluid pressure in a hydraulic system created by the pump and pressure regulator valve. Manual Valve: A spool valve that distributes fluid to various hydraulic circuits and is mechanically linked to the gear selector lever. Orifice: A restricting device (usually a hole in the spacer plate) for controlling pressure build up into another circuit. Overdrive: An operating condition in the gear set allowing output speed to be higher than input speed and output torque to be lower than input torque. Overrunning: The function of a one-way mechanical clutch that allows the clutch to freewheel during certain operating conditions of the transmission. Pinion Gear: A small toothed gear that meshes with a larger gear. Planet Pinion Gears: Pinion gears (housed in a carrier) that are in constant mesh with a circumferential internal gear and centralized sun gear. Planetary Gear Set: An assembly of gears that consists of an internal gear, planet pinion gears with a carrier, and a sun gear.

Residual Fluid Pressure: Excess pressure contained within an area after the supply pressure has been terminated. Safety Mode: A condition whereby a component (i.e. engine or transmission) will partially function even if its electrical system is disabled. Solenoid Valve: An electronic device used to control transmission shift patterns or regulate fluid pressure. Spool Valve: A cylindrical hydraulic control device having a variety of land and valley diameters, used to control fluid flow. Sprag Clutch: A mechanical clutch (holding device) consisting of figure eight like elements assembled between inner and outer races. Throttle Position: The travel of the throttle plate that is expressed in percentages and measured by the throttle position (TP) sensor. Torque: A measurable twisting force expressed in terms of Newton-meters (N•m), pounds feet (lbs ft) or pounds inches (lbs in). Torque Converter: A component of an automatic transmission, (attached to the engine flywheel) that transfers torque from the engine to the transmission through a fluid coupling. Transmission Control Module (TCM): An electronic device that manages the electrical system of the transmission. Variable Capacity Pump: The device that provides fluid for operating the hydraulic circuits in the transmission. The amount of fluid supplied varies depending on vehicle operating conditions.

Pressure: A measurable force that is exerted on an area and expressed as kilopascals (kPa) or pounds per square inch (psi). Pressure Control (PC): An electronic signal that continuously cycles the ON and OFF time of a device (such as a solenoid) while varying the amount of ON time. Race (Inner or Outer): A highly polished steel surface that contacts bearings or sprag or roller elements. Reduction (Gear Reduction): An operating condition in the gear set allowing output speed to be lower than input speed and output torque to be higher than input torque. 121

ABBREVIATIONS AC - Alternating Current A/C - Air Conditioning ACT - Actuator AFL - Actuator Feed Limit ALDL - Assembly Line Diagnostic Link AMP - Amperage ASM - Assembly AT - Automatic Transmission BF - Backfill °C - Degrees Celsius CBR1 - Clutch Braking 1st CC - Converter Clutch CL - Clutch COMP - Compensator CONT - Control CONV - Converter CSV - Clutch Select Valve DC - Direct Current D.C. - Duty Cycle DFLT - Default DLC - Diagnostic Link Connector DRAC - Digital Ratio Adaptor Converter DSC - Driver Shift Control DTC - Diagnostic Trouble Code DRV - Drive ECM - Engine Control Module ECT - Engine Coolant Temperature EX - Exhaust °F - Degrees Fahrenheit FD - Feed FDBK - Feedback FWD - Forward

N - Neutral NC - Normally Closed N.H. - Normally High N.L. - Normally Low N.m - Newton Meters NO - Normally Open ORF - Orificed ORUN - Overrun OSS - Output Speed Sensor P - Park PC - Pressure Control (solenoid) PCM - Powertrain Control Module PCS - Pressure Control Solenoid PR - Park Reverse (circuit) PRESS REG - Pressure Regulator PS - Pressure Switch PSI - Pounds per Square Inch PWM - Pulse Width Modulated R - Reverse REV - Reverse REG - Regulated RPM - Revolutions per Minute RWD - Rear Wheel Drive SEL - Selective SIG - Signal SOL - Solenoid SS - Shift Solenoid TCC - Torque Converter Clutch TCM - Transmission Control Module TFP - Transmission Fluid Pressure TFT - Transmission Fluid Temperature TP - Throttle Position (sensor) TRANS - Transmission or Transaxle

Hz - Hertz ISS - Input Speed Sensor

V - Volts VSS - Vehicle Speed Sensor

KM/H - Kilometers per Hour kPa - KiloPascals

2WD - 2 Wheel Drive 4WD - 4 Wheel Drive

LIM - Limit MAP - Manifold Absolute Pressure MPH - Miles per Hour

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INDEX A Abbreviations ........................................................................... 122 Actuator Feed Limit Valve ........................................................ 34 Accelerator Pedal Position Sensor ............................................. 48 Apply Components ............................................................... 17-24 1-2-3-4 clutch ................................................................. 18 3-5 and reverse clutch .................................................... 19 4-5-6 clutch .................................................................... 20 4-5-6 clutch dampener .................................................... 21 2-6 clutch ........................................................................ 22 low and reverse clutch .................................................... 23 low clutch sprag ............................................................. 24 B Ball Check Valves Location and Function ........................... 36-37 Basic Specifications ................................................................. 118 Brake Switch ............................................................................. 48 Bushing, Bearing and Washer Locations ................................ 101

E Electrical Components .......................................................... 39-48 component locations ....................................................... 39 transmission manual shift shaft position switch assembly .......................................................... 40 automatic transmission output speed sensor .................. 41 automatic transmission input speed sensor .................... 41 control solenoid (w body and TCM) valve assembly .... 42 transmission fluid temperature sensor ............................ 42 transmission fluid pressure switch ................................. 43 shift solenoid valves ....................................................... 44 TCC PC solenoid valve .................................................. 45 line pressure control solenoid valve ............................... 46 clutch pressure control solenoid valve ........................... 47 components external to the transmission ....................... 48 Engine Coolant Temperature Sensor ......................................... 48 Engine Speed Sensor ................................................................. 48 Explanation of Gear Ranges .................................................. 9-9A F

C Case and Associated Parts ................................................ 104-105 Center Support Assembly ............................................. 22-23, 106 Clutch Pressure Control Solenoids ............................................ 47 Color Legend ...................................................................... 10A-B Complete Hydraulic Circuits ................................................ 75-99 park ............................................................................ 76-77 reverse ....................................................................... 78-79 neutral ........................................................................ 80-81 drive range – 1st gear (engine braking) .................... 82-83 drive range – 1st gear ................................................ 84-85 drive range – 2nd gear ............................................... 86-87 drive range – 3rd gear ............................................... 88-89 drive range – 4th gear (TCC applied) ....................... 90-91 overdrive range – 5th gear (TCC applied) ................ 92-93 overdrive range – 6th gear (TCC applied) ................ 94-95 drive range – 3rd gear default ................................... 96-97 drive range – 5th gear default ................................... 98-99 lubrication points .......................................................... 100 Contents, Table of ....................................................................... 2 Control Valve Body Lower Assembly ................................. 32-33 Control Valve Body Upper Assembly .................................. 34-35 Controller Area Network (CAN) Bus ........................................ 48 Cooler and Lubrication Circuits .............................................. 100 Cross Sectional Views ........................................................... 8-8A

Fluid Pump Assembly .................................................. 29-31, 107 First (1st) Gear ........................................................... 58-61, 82-85 G General Description ..................................................................... 9 Glossary Of Technical Terms ........................................... 120-121 H How To Use This Book ............................................................ 4-5 Hydra-matic Product Designation System ............................... 119 Hydraulic Control Components ............................................ 28-37 location of major components ........................................ 28 fluid pump assembly ...................................................... 29 pressure regulation ......................................................... 30 valves located in the fluid pump cover assembly .......... 31 valves located in the lower control valve body ......... 32-33 valves located in the upper control valve body ......... 34-35 ball check valves location and function .................... 36-37

D Dampener - 4-5-6 Clutch ........................................................... 21 Diagnostic Link Connector ........................................................ 48 Driver Shift Control Gear Ranges ............................................... 9 Driver Shift Control Switches ................................................... 48

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INDEX I Illustrated Parts List .......................................................... 103-117 case and associated parts ....................................... 104-105 clutch and associated parts ........................................... 106 torque converter (w/fluid pump) housing assembly ..... 107 control (w/body and valve) valve assembly ................. 108 upper control valve body assembly .............................. 109 lower control valve body assembly .............................. 110 1-2-3-4 and 3-5 reverse clutch assembly ..................... 111 4-5-6 (w/turbine shaft) clutch assembly ....................... 112 2-6 clutch assembly ........................................................... 113 low and reverse clutch assembly .................................. 114 4-5-6 clutch hub assembly ............................................ 115 output carrier assembly ................................................ 115 output shaft assembly ................................................... 116 park system components .............................................. 117 Input Speed Sensor .................................................................... 41 Input Sun Gear ...................................................................... 25-27 Input Planetary Gear Set ....................................................... 25-27 Introduction ................................................................................. 3 L Line Pressure Control Solenoid ................................................. 46 Low and Reverse Clutch ........................................................... 23 Low Clutch Sprag ...................................................................... 24 Lubrication Points .................................................................... 100 M Major Mechanical Components ................................................. 10 Manifold Absolute Pressure (MAP) Sensor .............................. 48 Manifold Air Temperature (MAT) Sensor ................................ 48 Manual Valve ............................................................................ 33 Minimum Pump Output ............................................................. 30 Maximum Pump Output ............................................................ 30

P Park ............................................................................ 52-53, 76-77 Park System Components ........................................................ 117 Planetary Gear Sets ............................................................... 25-27 description ...................................................................... 25 reduction ......................................................................... 26 overdrive ......................................................................... 26 reverse ............................................................................ 26 Power Flow ........................................................................... 49-73 mechanical powerflow from TC to Turbine Shaft ......... 50 common hydraulic functions .......................................... 51 park ............................................................................ 52-53 reverse ....................................................................... 54-55 neutral ........................................................................ 56-57 drive range – 1st gear (engine braking) .................... 58-59 drive range – 1st gear ................................................ 60-61 drive range – 2nd gear ............................................... 62-63 drive range – 3rd gear ............................................... 64-65 drive range – 4th gear ................................................ 66-67 drive range – 5th gear TCC applied .......................... 68-69 drive range – 6th, TCC applied ................................. 70-71 drive range – 3rd gear default ................................... 72-73 drive range – 5th gear default ................................... 74-75 Preface ...................................................................................... 1 Pressure Control Solenoid ........................................ 42, 45, 46-47 Pressure Regulation ................................................................... 30 Pressure Regulator Valve Train ................................................. 31 Pressure Relief Valve ................................................................ 31 Principles of Operation ........................................................ 9A-46 major mechanical components ....................................... 10 color legend ............................................................. 10A-B range reference chart ...................................................... 11 torque converter ......................................................... 12-15 apply components ...................................................... 17-24 planetary gear sets ..................................................... 25-27 hydraulic control components ................................... 28-37 electrical components ................................................ 39-48

N R Neutral

.................................................................... 56-57, 80-81 O

Operating Conditions - Range Reference Chart ........................ 74 Output Speed Sensor ................................................................. 41 Output Planetary Gear Set ......................................................... 25 Overdrive .............................................................................. 26-27

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Range Reference Charts ...................................................... 11, 74 Reduction ................................................................................... 26 Reverse ............................................................. 26, 54-55, 78-79 S Seal Locations ......................................................................... 102 Second (2nd) Gear .................................................... 62-63, 86-87 Shift Solenoid Valves ................................................................ 44 Shift Solenoid Valve 1 ............................................................... 44 Shift Solenoid Valve 2 ............................................................... 44 Speed Sensors ............................................................................ 41 Stator Assembly ......................................................................... 13

INDEX T Table of Contents ........................................................................ 2 TCC PC Solenoid Valve ...................................................... 42, 45 Throttle Position (TP) Sensor .................................................... 48 Torque Converter Clutch Control Valve ............................. 31, 45 Torque Converter Clutch Regulator Valve ................................ 33 Transmission Manual Shift Shaft Position Switch Assembly ... 40 Third (3rd) Gear ........................................................ 64-65, 88-89 Torque Converter Clutch ...................................................... 12-15 converter pump and turbine ............................................ 12 pressure plate .................................................................. 12 stator assembly ............................................................... 13 torque converter apply and release ............................ 14-15 Torque Converter Clutch Applied ........................................ 14-15 Torque Converter Clutch Released ....................................... 14-15 Torque .................................................................................... 25 Torque vs. Speed ....................................................................... 25 Transmission Fluid Temperature Sensor ................................... 42 Transmission Adapt Function .................................................... 47 U Understanding The Graphics ................................................. 6-8A V Valves Located In The Lower Control Valve Body ............. 32-33 clutch select valve 2 ....................................................... 32 clutch select valve 3 ....................................................... 32 compensator feed regulator valve ................................. 32 TCC regulator valve ....................................................... 33 manual valve .................................................................. 33 Valves Located In The Upper Control Valve Body ............. 34-35 actuator feed limit valve ................................................. 34 CBR1/C456 clutch regulator valve ................................ 34 4-5-6 boost valve ............................................................ 34 2-6 clutch regulator valve ............................................... 34 2-6 clutch regulator gain valve ....................................... 34 3-5 reverse clutch boost valve ........................................ 34 3-5 reverse clutch regulator valve .................................. 34 1-2-3-4 clutch regulator valve ........................................ 34 1-2-3-4 clutch shuttle valve ............................................ 35 1-2-3-4 clutch boost valve .............................................. 35 Valves Located In The Fluid Pump Cover Assembly ............... 31 pressure regulator valve ................................................. 31 isolator valve .................................................................. 31 pressure relief ball valve ................................................ 31 torque converter clutch control valve ............................. 31 torque converter clutch feed limit valve ......................... 31

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HYDRA-MATIC 6 Speed RWD

Litho in U.S.A.

TECHNICIAN'S GUIDE

October 2005 GENERAL MOTORS CORPORATION 2M

HYDRA-MATIC 6 Speed RWD TECHNICIAN'S GUIDE