Plano Hyd 385c

RENR7366-02 March 2012

Component Locations Part Machine Schematic Number  Location Location

Description  Accumulator&Mtg Gp- Hydraulic(Pilot)

160-4138

1

E-3

 AccumulatorGp- Hydraulic

215-4905

2

C-7

Cylinder Gp - Boom

Note A

3

F -6

Cylinder Gp - Bucket

Note A

4

F-7

Cylinder Gp - Stick

Note A

5

F-7

Filter Gp - Oil

185-0336

6

259-0681

7

 A-7

6E-5534

8

 A-6,A-7

B-7

9

2 4 7- 8 97 8

10

2 25 25 -4 61 61 4

11

B-6

12

F-4,F-5

234-4535

13

F-2

Motor Gp -S -Swing (Rear)

234-4537

14

F-3

P um p - Gp - P s i o t n (M ai n Hy dr au il c)

1 55 -9 20 5

15

 A-4,A-5

Pump Gp -G -Gear P ( ilot)

155-9222

16

 A-3

M ot or G p - P s i o t n ( Hy dr au au il c Oi l C oo le r) Motor Gp - Piston (T (Travel)

209-5895

Motor Gp -S -Swing (Front)

Pump Gp Gp - Piston (F (Fan Mo Motor)

VA R I A B LII T Y

SPRING (ADJUSTABLE)

SPR ING

LI N E RES T RI C TI ON (VARIABLE)

17

 A-3

18

 A-2,A-3

19

B-3

Swivel Gp

156-0622

21

E-5

20

173-3429

22

B-6

23

C-1

24

C-7

241-8929

25

E-3

Valve Gp -M - Main Control

C-1ThruC-7

230-0080

26

V al v e Gp - M a n i o f l d & R e du ci n g ( Pi l ot O i l )

1 4 0- 0 73 6

27

Valve Gp - Swing Cu Cushion

241-8929

28

E-3

Va v l e Gp - T ra ve l Co un te rb al an ce

1 55 -9 20 0

29

E-4,E-5

385C Excavator  Hydraulic System EE

DD

D-4

NOTE A: Check the parts manual for the correct cylinder part number.

15

Pilot Manifold Pressure Pilot Pump Delivery Pr essur e

B-3

Swing Pump Delivery Pr essure

B-3

DD

Front Pu Pump Delivery Pr essure

EE

Rear Pump Deliver y Pressure

B-4

Hydraulic Oil Sampling Port

B-3

20

S H UTTL E

P LIO T CONTROLLED

SOLENOID

FLOW

SOLENOID OR MANUAL

UN I DI RE CT O I N AL

SOLENOID &PILOT

SOLENOID& PILOTORMANUAL

PUSH - PULL LEVER

MANUALSHUTOFF

GENERAL MANUAL

25

THERMAL

© 2012 Caterpillar, All Rights Reserved

PUSH BUTTON

I NT E R NA L R E TU R N

ACCUMULATORS

DETENT

PEDAL

G A S CH A R GED

SIMPLIFIED

LIN E S C RO S SI N G

COMPLETE

FIXED DISPLACEMENT

INTERNAL SUPPLYPRESSURE

HYDRAULIC&PNEUMATICCYLINDERS

LIN E S J OI NN I G

SINGLEACTING

HYDRAULICMOTORS

VARIABLEDISPLACEM ENT NON-COMPENSATED

SPRING

REMOTESUPPLYPRESSURE

CROSSING&JOININGLINES

UNIDIRECTIONAL

24 26

SERVO

PILOT CONTROLSYMBOLS

RELEASEDPRESSURE

HYDRAULICPUMPS

14

BD I R I EC T I ON A L

MANUALCONTROLSYMBOLS

S P RI NG L O AD E D

23

RE T URN BEL OW FL U ID LE V E L

ROTATING SHAFTS

DOUBLEACTING

INTERNAL PASSAGEWAYS

VARIABLEDISPLACE MENT NON-COMPENSATED

INFINITE POSITIONING

3POSITION

2POSITION

UNIDIRECTIONAL

BIDIRECTIONAL

10

SPRING LOADED

RETU R N ABO VE FL U I DLE VEL

TEMPERATURE

FIXED DISPLACEMENT

PUMP GP MAIN HYDRAULIC

29

FOUR -WAY

COMBINATION CONTROLS

B-5

11

BASIC SYMBOL

I NFINI TEPOSI TIO N

PR E S S U R I Z ED

PRESSURE

EDA1-UP KGB1-UP KBC1-UP SBE1-UP T2E1-UP KKK1-UP JCM1-UP MNZ1-UP

D-3

BB

THREE -WAY

CHECKVALVES

MEASUREMENT

VIEW A

Schematic Location

CC

TWO -WAY

P T

E XT ER N A L RE TU R N

Tap Locations Pressure, Sampling, and Sensor 

27

 ATTACH MENT

VALVE PORTS

TH R EE P OS T I O I N

SHI FTEDPO SI TI ON

V E NTE D

201-9381

12

PUMP (VARIABLE&PRESSURE COMPENSATED)

LINERESTRICTION (VARIABLE&PRESSURE COMPENSATED)

 A B

P T

17

B-5

201-9382

1

HYDRAULIC PNEUMATIC ENERGYTRIANGLES

AUX

PUMP (2-SECTION)

FLUIDSTORAGERESERVOIRS

Valve Gp - Control (Swing)

SOS

LIN E R E ST RI C T ION (FIXED)

VALVES

T WO P O SI TI ON

 AB

NORMALPOSITION

170-9918

 AA

PRESSURE COMPENSATION

VALVE ENVELOPES

A

259-0784

Description

R E ST RI C T ION

CONTROLVALVES

2 21 -8 86 9

Tap Number 

CON T RO L V AL VE S

A

O NE P OS T I O I N

221-8869

Valve Gp Gp -C - Check (Return)

FLUIDCONDITION ER

B-6

Sensor As -P -Pressure (M (Main Pu Pump) ValveGp- Check(HydraulicFanMotor,Radiator)

PUMPORMOTOR

B-7

S en so r As - P e r ss ur e (S wi ng P um p)

Pump Gp -P - Piston (Swing)

BASICCOMPONENT SYMBOLS MAIN

234-4454 M oo t r G p - P i st o n ( HY d ra u il c O li C o o e l r F a n)

FLUID POWER SYMBOLS

15

FLOWINONE DIRECTION

BIDIRECTIONAL

PARALLEL FLOW

CROSS FLOW

FLOW IN EITHER DIRECTION

Printed in U.S.A.

26

ELECTRICAL SYMBOLS TABLE HYDRAULICSYMBOLS(ELECTRICAL)

G

21

M

27

22 3

TRANSDUCER (FLUID)

TRANSDUCER (GAS/ AIR)

GENERATOR

ELECTRICMOTOR

PRESSURE SWITCH

PRESSURESWITCH (ADJUSTABLE)

TEMPERATURE SWITCH

5

2

ELECTRICAL WIRE

1

9

ELECTRICALSYMBOLS(ELECTRICAL)

27

T

PRESSURE SWITCH

 AA

3

TEMPERATURE SWITCH

4

15

6

12

20

8

29

13 7

H YD RA UL IC S CH EM AT IC E XA MP LE

CURRENTSTANDARD

CURRENTSTANDARD

HARNESSIDENTIFICATIONCODETHISEXAMPLE INDICATESWIRE135 INHARNESS“AG”

VALVE GP - MANIFOLD & REDUCING

28

E LE CT RI CA L SC HE MAT IC E XA MP LE

WIRE CIRCUITNUMBER IDENTIFICATION

325-AG135 PK-14

16 17

6

1

18 19

8

27

7

14

3

FLOW SWITCH

WIRENUMBER IDENTIFICATIONCODES

16 17 18 19

LEVEL SWITCH

CIRCUITNUMBER IDENTIFICATION

5

WIRE COLOR

WIRECOLOR

WIREGAUGE

18

WIRE

WIRECOLOR

B

325-PK-14

CC

CIRCUITNUMBER IDENTIFICATION

WIREGAUGE

 A

(EXAMPLEVALVE)

19

13

17 SOS

28

10 15

7

9

20 22 BB

12 11

29

9 23 2

24 26

21

COMPONENT LOCATIONS

16

4 PILOT / FAN / SWING PUMPS

FILTER GP

   2    0      6    6    3    7    R    N    E  e ,    R  g   a

   P    4    2

325-PK

PREVIOUSSTANDARD

25

   )   s   e    h   c   n    i    8    2   x   s   e    h   c   n    i    4    3   :   s   n   o    i   s   n   e   m    i    D    (

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7

6

STICKCYLINDER

BUCKET CYLINDER

5

MOTOR GP RH TRAVEL 209-5895

BOOM CYLINDER

4

TRAVELMOTOR (RIGHT)

3

2

MOTOR GP LH TRAVEL 209-5895

TRAVELMOTOR (LEFT)

SWING MOTOR (REAR)

F

Pi Dr  BL3

BL4

 AL4

 AR3

Dr 

BR3

BG

 AG  A

PG

F

PB

VALVE GP RH TRAVEL COUNTERBALANCE 155-9200

 A

BG

 AG

B

E

B

A

B

 A

VALVE GP CONTROL (SWING) 241-8929 M1

M2

 AL1

VALVE GP LH TRAVEL SDr1 COUNTERBALANCE 155-9200

BR1

AR1

    4     i     P

    5     i     P

R

SP

B T

P

    3    2     i     P    i     P

    4     1     A     i     S     P    P

 A

S Dr2 VALVE GP SWING CUSHION 116-3420

    3     2     1     A     A     A     S     S     S     P     P     P

E

VALVE GP PILOT MANIFOLD & REDUCING 140-0736

PAC

    6     i     P DR2

    G     P

PS2

aL2

D

aL3

bL2

bL3

    2     1     R     R     D     D

 AA aL4

bR1

    T     U     O

    P     U

    )     R     (     L     E     V     A     R     T

    )     L     (     L     E     V     A     R     T

    D     W     F aR1

    N     I

LS

bL4 DR5

    D     W     F aL1

PR

 AR3

C

R2

DR4

PF

BR3 B L2 L2 A L2 L2

D

    V     E     R

    V     E     R

    K     C     I     T     S

bR3

VALVE GP CHECK (RETURN) 201-9382

bL1

VALVE GP MAIN CONTROL 230-0080

    M     O     O     B

    E     S     O     L     C

R1

    3     R     D

    N     W     O     D

    T     E     K     C     U     B

    H     C     T     A

    6     5     4     N     R     R     R     I     P     D     D     D

DR1

aR3

    N     E     P     O

 ACCUMULATORGP

DR3

PS3     T     U     O     T

C

M

 ACCUMULATORGP 160-4138

SWIVELGP 156-0622

DR4

PA

PB

P

B

BL1

PA M

P

   2    0      6    6    3    7    R    N    E  e ,    R  g

MOTOR GP SWING (FRONT) 234-4535

DB

PR

MOTOR GP SWING (REAR) 234-4537

Dr 

PG

   )   s   e    h   c   n    i    8    2   x   s   e    h   c   n    i    4    3   :   s   n   o    i   s   n   e   m    i    D    (

SWING MOTOR (FRONT)

PG2

PD

Pi Pi

Dr 

AL3

PS4

PG1

DB

PG Pi

1

VALVE GP CHECK 201-9381  AL4 BL4

SENSOR AS.

B R1

AR1

BL1

A L1