Manual 950G

RENR4322-03 May 2005

950G II and 962G II Hydraulic Component Locations Schematic Location

Component Main Control Valve %

A1

2

Auxiliary Cylinders @

A2

3

Tilt Cylinder

A3

4

Lift Cylinders

A4

5

Front Service Brakes

A5

6

Left Pedal Assembly

7

Right Pedal Assembly

8

Brake Control Valve (SERVICE)

9

Front Service Brakes Accumulator

10

Rear Service Brakes Accumulator

11

2

BASIC COMPONENT SYMBOLS

3 MAIN AUX.

4

PUMP or MOTOR

5

CONTROL VALVES

SPRING

FLUID CONDITIONER

LINE RESTRICTION (FIXED)

RESTRICTION

PUMP: VARIABLE and PRESSURE COMPENSATED

2-SECTION PUMP

6 PRESSURE COMPENSATION

LINE RESTRICTION (VARIABLE)

SPRING (ADJUSTABLE)

VARIABILITY

7

HYDRAULIC PNEUMATIC ENERGY TRIANGLES

ATTACHMENT

LINE RESTRICTION VARIABLE and PRESSURE COMPENSATED

VALVES VALVE ENVELOPES

VALVE PORTS

A6

Parking Brake Parking Brake Actuator

13

Accumulator (Ride Control) #

A5

14

Shuttle Valve (Ride Control) #

A4

15

Line Relief Valve (Aux. Cylinder Head End) @

A1

16

Line Relief Valve (Aux. Cylinder Rod End) @

A2

17

Line Relief Valve (Tilt Cylinder Rod End)

18

Line Relief Valve (Tilt Cylinder Head End)

19

Piloted Operated Check Valve (Float)

B4

20

Check Valve (Ride Control) #

B4

21

Relief Valve (Ride Control Diverter Valve) #

B4

22

Solenoid Valve (Ride Control) #

B5

23

Rear Service Brakes

B5

24

Proirity Stage Valve (Accumulator Charge)

B5

25

Check Valve (Accumulator Charge)

B5

26

Shuttle Valve (Accumulator Charge)

B6

27

Accumulator Charge Valve (Braking)

B6

28

Brake Valve (Parking)

B7

29

Pressure Switch (Parking Brake)

30

Spool (Ride Control Diverter Valve)

B7 B4

12 13 15

14

Reversing Fan Attachment

950G II and 962G II Hydraulic Components

Main Relief Valve

C1

Strainers (Pilot Manifold)

C1

34

Relief Valve (Accumulator Charge)

C5

1

Relief Valve

10

Relief Valve

Check Valve

11

Valve

Item No.

Item No.

Component

35

Pressure Switch (Service Brake Oil)

C6

36

Primary Reducing Valve (Pilot Manifold)

C2

3

Solenoid Valve

12

Cooler

C3

4

Check Valve

13

Piston Motor

C3, C4

5

Solenoid Valve

14

Reversing Valve

C4

6

Valve

15

Filter

16

Screen

17

Piston Pump

40

Float Valve (Pilot Manifold)

C2

7

Diverter Valve

41

Shuttle Valve (Pilot Manifold)

C4

8

Diverter Valve

42

Cylinder (Quick Coupler)

D6

9

Relief Valve

43

Diverter Valve (Quick Coupler)

D6

44

Secondary Reducing Valve (Pilot Manifold)

D1

45

Selector Spool (Steering Valve)

D6

46

Directional Spool (Steering Valve)

D6

47

Check Valve (Steering Valve)

D6

48

Cylinders (Steering)

D6

49

Gear Motor (Hydraulic Fan)

D2

50

Pressure Switch (Steering Diverter Valve)

D3

51

D4

52

Steering Diverter Valve Steering Neutralizer Valve (Left)

53

Steering Neutralizer Valve (Right)

D5

54

Check Valve (Hydraulic Oil Cooler Bypass)

E2

55

Hydraulic Oil Cooler

E2

56

Connector (Orifice 1.6MM)

E4

57

Solenoid Valve (Hydraulic Fan)

E3

58

Piston Pump (Steering)

E1

59

Piston Pump (Hydraulic Fan)

E2

60

Pressure Switch (Secondary Steering) *

E4

61

Oil Filter (Hydraulic)

F2

62

Pressure and Flow Compensator (Hyd Fan) Vane Pump (Implement)

F3

63 64

Vane Pump (Pilot/Braking)

F1

65

Breaker Relief Valve

F1

66

Strainer (Hydraulic Tank)

F1

67

Secondary Steering Pump and Electric Motor

F3

68

Metering Pump (Steering)

F4

69

Check Valve (Steering)

F4

70

Backup Relief Valve (Steering)

F5

71

Make-up Check Valves (Steering)

F5

72

Control Valve (Steering)

F6

73 74

Crossover Relief Valve (Steering) Hydraulic Tank

F3

75

Relief Valve (Secondary Steering Pump) *

F3

Note: Installed on the following machines 950G II - AXX and 962G II - AXY

PILOT CONTROLLED

UNIDIRECTIONAL

BIDIRECTIONAL

FLUID STORAGE RESERVOIRS

VENTED

RETURN ABOVE FLUID LEVEL

PRESSURIZED

RETURN BELOW FLUID LEVEL

COMBINATION CONTROLS

SOLENOID or MANUAL

SERVO

SOLENOID and PILOT or MANUAL

SOLENOID and PILOT

DETENT

THERMAL

MANUAL CONTROL SYMBOLS

PUSH-PULL LEVER

MANUAL SHUTOFF

GENERAL MANUAL

PUSH BUTTON

PEDAL

SPRING

PILOT CONTROL SYMBOLS RELEASED PRESSURE

Volume 2: Electrohydraulic and Command Control Steering 950G II: 962G II: AYB1-UP AYE1-UP AYD1-UP AYG1-UP AXR1-UP AXS1-UP

Component

2

Pilot Control Valve %

Volume 1: Pilot Hydraulics and HMU Steering 950G II: 962G II: AYL1-UP AXY1-UP AYS1-UP BAB1-UP AXX1-UP BAC1-UP BAA1-UP BAD1-UP

17

33

39

FLOW

TEMPERATURE

SOLENOID

32

Connector (Orifice 1.7MM)

950G Series II and 962G Series II Wheel Loader Hydraulic System

16

B6

38

PRESSURE

SHUTTLE

SPRING LOADED

BASIC SYMBOL

ROTATING SHAFTS

A2

Priority Valve (Brake Accumulator Charge)

Ball Valve (Implement Lockout)

INFINITE POSITION

MEASUREMENT

10

31

37

CHECK VALVES

P T SHIFTED POSITION

P T NORMAL POSITION

11

FOUR-WAY

THREE-WAY

AB

AB

9

TWO-WAY

THREE POSITION

CONTROL VALVES

A7

12

TWO POSITION

ONE POSITION

8

EXTERNAL RETURN

REMOTE SUPPLY PRESSURE

INTERNAL RETURN

CROSSING AND JOINING LINES

ACCUMULATORS

SPRING LOADED

SIMPLIFIED

GAS CHARGED

LINES CROSSING

HYDRAULIC PUMPS FIXED DISPLACEMENT

HYDRAULIC AND PNEUMATIC CYLINDERS

SINGLE ACTING

LINES JOINING

FIXED DISPLACEMENT

VARIABLE DISPLACEMENT NON-COMPENSATED

UNIDIRECTIONAL

UNIDIRECTIONAL

BIDIRECTIONAL

BIDIRECTIONAL

DOUBLE ACTING

INTERNAL PASSAGEWAYS

HYDRAULIC MOTORS

VARIABLE DISPLACEMENT NON-COMPENSATED

INTERNAL SUPPLY PRESSURE

COMPLETE

PARALLEL FLOW

FLOW IN ONE DIRECTION

TWO POSITION

THREE POSITION

INFINITE POSITIONING

CROSS FLOW

Volume 1

Reversing Fan Attachment

Printed in U.S.A.

© 2005 Caterpillar All Rights Reserved

228-8530

D4

Electrical Symbols Table Hydraulic Symbols (Electrical)

24, 25, 26, 27, 28, 29, 31, 34, 35, EE

1, 14, 15, 16, 17, 18, 19, 20, 21, 22, 30, 32 33, 36, 37, 38, 39, 40, 41, 44, FF, GG

G

67, 74 Transducer (Fluid)

58, 63, 64

Transducer (Gas / Air)

M

Generator

Electric Motor

F1

Pressure Switch (Adjustable)

Pressure Switch

Electrical Wire

Temperature Switch

49, 54, 55 Electrical Symbols (Electrical)

T

F3

Pressure Symbol

Temperature Symbol

Flow Symbol

Level Symbol

* Secondary Steering is an optional attachment. # Ride Control is an optional attachment. @ Auxiliary Cylinders are an optional attachment.

Wire Number Identification Codes

% The one stem valve (third function) is an optional attachment field conversion. The three stem valve is an optional attachment. The two stem valve is standard.

Electrical Schematic Example

Hydraulic Schematic Example Current Standard

Current Standard

45, 46, 47, 70, 71, 72, 73

Pressure Tap Locations Pressure Tap

9, 10

Harness identification code This example indicates wire 135 in harness "AG".

11, 12

13

AA

Tilt Cylinder Rod End Pressure

BB

Tilt Cylinder Head End Pressure

CC

Rear Service Brake Pressure

Circuit Number Identification

325-PK Circuit Identification Number

57, 59, 62

A5

Front Service Brake Pressure

EE

Service Brake Accumulator Pressure

C6

FF

Implement Pilot Pump Pressure

C4

GG

Implement Pump Pressure

D1

HH

Fluid Sampling Valve

E3

JJ

Steering Pump Pressure

E5

KK

Hydraulic Fan Pump Pressure

E2

LL

Steering Signal Pressure

F4

Wire Color

325-AG135 PK-14

A3

DD

Wire

4

Schematic Location

Description

6, 7, 8

68, 69, LL

AA, BB

3

Wire Color

Wire Gauge

Previous Standard Wire Color

Wire

325-PK-14 B Circuit Number Identification

A

Wire Gauge (EXAMPLE VALVE)

Media References Media Number

Media Number

Systems (Continued)

Parts Manual SEBP3281

SEBP3352 SEBP3280

962G II AYE 962G II AXS

950G II AXR

SEBP3494

962G II AXY

950G II AXX

SEBP3495

962G II BAB

SEBP3496 SEBP3285

950G II BAA

SEBP3492

962G II BAD

SEBP3339

950G II AYB 950G II AYL

SEBP3497

Engine SENR9617

Troubleshooting

Power Train

Test and Adjusting (Steering) Specifications (Braking)

RENR4314 RENR4315

System Operation (Braking)

RENR4316

Testing and Adjusting (Braking) Specifications (Electrohydraulic/Pilot)

RENR4318

Systems Operation (Electrohydraulic/Pilot)

RENR4319

RENR4317

Testing and Adjusting (Hydraulic)

RENR4320

Testing and Adjusting (Electrohydraulic)

RENR4321 RENR6042

RENR4308 RENR4309

Specifications (Machine Systems)

Systems Operation Testing and Adjusting

RENR4310

Schematic (Electrohydraulic System)

RENR4362

Schematic (Pilot System)

RENR4324

Specifications

Systems Specifications (Steering)

RENR4312

Systems Operation (Steering)

RENR4313

Electrical System

23, CC

61, 65, 66, 74, HH

48

50, 51, 52, 53, 56, 60, JJ

5, DD

Operation & Maintenance Manual English

FLOW ALLOWED IN EITHER DIRECTION

SEBU7459

MACHINE COMPONENT LOCATIONS

42, 43

24 Page,

1

1

RENR4322-03 VOL 1

Item No.

FLUID POWER SYMBOLS

2

1 1

4

3

2

3

AA

6

5

4

6

5

7 7

8

9

10

11

12

21 13

A

14

CC

BB

15

16

20

18

17

A

19 DD

23

22

B

24

25

26

27

29

28

B

30

31 FF 32

33

EE 35

34 36

38

38

37

38

39

C

40

41

42

44 43

45

D

24 Page, B/W

RENR4322-03 VOL 1

C

46

D 47

GG 49

50

52

51

48

53

54 55

JJ

KK

56 61

E 58

E 57

HH

59

60

71 66 63

72

73

62

LINEAR PATTERNS

LL

66

64

67

68

Implement Pressure

70

69

Pilot Pressure

M

F

Return Lines

65

Components 74

75

THIS SCHEMATIC IS FOR THE 950G AND 962G SERIES II WHEEL LOADER PART #: 187-6675 CHG 01 Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.

g00984677

1

2

3

4

5

6

7

F

Chart A 950G II and 962G II Hydraulic Component Locations Schematic Location

1

Main Control Valve %

A1

2

Auxiliary Cylinders @

A2

3

Tilt Cylinder

A3

4

Lift Cylinders

A4

5

Front Service Brakes

A5

6

Left Pedal Assembly

A6

7

Right Pedal Assembly

A6

8

Brake Control Valve (Service)

A6

9

Front Service Brakes Accumulator

10

Rear Service Brakes Accumulator

A7 A7

11

Parking Brake

A7

12

Parking Brake Actuator

13

Accumulator (Ride Control) #

A7 A5

14

Shuttle Valve (Ride Control) #

A5

15

Ride Control Accumulator #

A5

16

Line Relief Valve (Aux. Cylinder Head End) @

A1

17

Line Relief Valve (Aux. Cylinder Rod End) @

F1

18

Line Relief Valve (Tilt Cylinder Rod End)

A2

19

Line Relief Valve (Tilt Cylinder Head End)

A3

20

Pilot Operated Check Valve (Float)

B4

21

Relief Valve (Ride Control) #

B5

22

Rear Service Brakes

B5

23

Pressure Switch (Parking Brake)

B7

24

Check Valve (Accumulator Charge)

B6

25

Shuttle Valve (Accumulator Charge)

B6

26

Solenoid Valve (Ride Control) @

B5

27

Auxiliary Spool (Main Control Valve) @

B1

28

Tilt Spool (Main Control Valve)

B2

29

Lift Spool (Main Control Valve)

B3

30

Spool (Ride Control) #

B4

31

Resolver Valve (Dead Engine Lower)

B4

32

Priority Valve (Accumulator Charge Pilot)

C6

33

Primary Reducing Valve (Pilot Manifold)

C2

34

Proportional Valve (Tilt Dump)

C2

35

Proportional Valve (Lift Lower)

C3

36

Proportional Valve (Auxiliary Lower)

C4

37 38

Main Relief Valve

C1

Relief Valve (Accumulator Charge)

C5

39

Piority Stage Valve (Accumulator Charge)

C6

40

Accumulator Charging Valve (Braking)

C6

41

Strainers (Pilot Manifold)

C1

42

Solenoid Valve (Pilot Pressure Supply)

C2

43

Ball Valve (Dead Battery, Lift Arm Lower)

44

1 4

Item No.

C1

3

Solenoid Valve

12

Cooler

Float Valve (Pilot Manifold)

C4

4

Check Valve

13

Piston Motor

5

Solenoid Valve

14

Reversing Valve

6

Valve

15

Filter

16

Screen

17

Piston Pump

45

Pressure Switch (Service Brakes)

C6

46

Parking Brake Valve

C7

47

Proportional Valve (Tilt Tiltback)

C3

48

Proportional Valve (Lift Raise)

C3

7

Diverter Valve

49

Proportional Valve (Auxiliary Raise)

C4

8

Diverter Valve

9

Relief Valve

50

Secondary Reducing Valve (Pilot Manifold)

D2

Shuttle Valve (Pilot Manifold)

D2

52

Cylinder (Quick Coupler)

D6

53

Diverter Valve (Quick Coupler)

D6

54

Steering Cylinders

D7

55

Pilot Valve (Steering)

D4

56

Wheel (Steering Assembly)

D4

57

Steering Oil Screen Group

D5

E5

61

Crossover Relief Valve (Steering)

E6

62

Resolver Valve (Steering)

E7

63

Proportional Valve (Hydraulic Fan)

E3

64

Check Valve (Hydraulic Oil Cooler Bypass) Hydraulic Oil Cooler

E2 E2

66

Gear Motor (Hydraulic Fan)

E2

67

Check Valves (Steering Valve)

E7

68

Piston Pump (Hydraulic Fan)

69

Pressure and Flow Compensator (Hyd Fan)

E3 E3

70

Piston Pump (Steering)

E1

71

Oil Filter (Hydraulic)

E2

72

Shuttle Valve (Steering)

F6

73

Vane Pump (Implement)

F1

74

Vane Pump (Pilot/Braking)

F1

75

Resolver Valve (Steering)

F4

76

Diverter Valve (Steering)

F5

77

Pressure Switch (Secondary Steering) *

F4

78

Right Neutralizer Valve (Steering)

E5

79

Pressure Reducing Valve (Steering)

F6

80

Backup Relief Valve (Steering)

F7

Secondary Steering Pump and Electric Motor *

F1

82

Breaker Relief Valve

F1

83

Pressure Switch (Steering Pump)

F5

84

Hydraulic Tank

F1

85

Strainers (Hydraulic Tank)

F2

86

Relief Valve (Secondary Steering Pump) *

F4

Volume 2: Electrohydraulic and Command Control Steering 950G II: 962G II: AYB1-UP AYE1-UP AYD1-UP AYG1-UP AXR1-UP AXS1-UP

Tilt Cylinder Head End Pressure

CC

Rear Service Brake Pressure

DD EE

Front Service Brake Pressure Auxiliary Pilot Pump Pressure (Open)

Reversing Fan Attachment

228-8530

59

B2

Tilt Pilot Pump Pressure (Dump)

B2

HH

Tilt Pilot Pump Pressure (Tiltback)

B3

JJ

Lift Pilot Pump Pressure (Lower)

B3

KK LL

Lift Pilot Pump Pressure (Raise) Pilot Pressure (Ride Control)

B4

MM

Service Brake Accumulator Pressure

NN

Pump Pressure (Implement)

B6 D1

PP RR

Pump Pressure (Steering)

E1

SS

Fluid Sampling Valve Pilot Pressure (Steering)

E2 E6

Hydraulic Fan Pump Pressure

E3

UU

Steering Control Valve Neutral Pilot Pressure

E4

VV

Pilot Pressure (Steering)

F4

WW

Pilot Pressure (Steering )

F6

XX

Pump Signal Pressure (Steering)

F5

TT

Parts Manual

SEBP3281

SEBP3352 SEBP3280

962G II AYE 962G II AXS

950G II AXR

SEBP3494

962G II AXY

950G II AXX

SEBP3495

962G II BAB

SEBP3496 SEBP3285

950G II BAA

SEBP3492

962G II BAD

SEBP3339

Engine Troubleshooting

SEBP3497

SENR9617

SPRING LOADED

GAS CHARGED

LINES CROSSING

HYDRAULIC PUMPS VARIABLE DISPLACEMENT NON-COMPENSATED

FIXED DISPLACEMENT

HYDRAULIC AND PNEUMATIC CYLINDERS SINGLE ACTING

LINES JOINING

UNIDIRECTIONAL

BIDIRECTIONAL

BIDIRECTIONAL

PARALLEL FLOW

FLOW IN ONE DIRECTION

TWO POSITION

THREE POSITION

INFINITE POSITIONING

CROSS FLOW

FLOW ALLOWED IN EITHER DIRECTION

Printed in U.S.A.

Hydraulic Symbols (Electrical)

M

G Transducer (Gas / Air)

Pressure Switch (Adjustable)

Generator

Electric Motor

Electrical Wire

Temperature Switch

Temperature Symbol

Flow Symbol

Level Symbol

Hydraulic Schematic Example Current Standard

Current Standard

9, 10

13

77

Harness identification code This example indicates wire 135 in harness "AG".

4

Wire

Circuit Number Identification

Wire Color

325-AG135 PK-14

63, 68, 69, TT

6, 7, 8

56

55, UU, VV

AA, BB

325-PK

Circuit Identification Number

3

Wire Color

Wire Gauge

Previous Standard Wire Color

Wire

325-PK-14 B Circuit Number Identification

Systems (Continued)

A

Wire Gauge (EXAMPLE VALVE)

Media Number

Test and Adjusting (Steering) Specifications (Braking)

RENR4314 RENR4315

System Operation (Braking)

RENR4316

Testing and Adjusting (Braking) Specifications (Electrohydraulic/Pilot)

RENR4317 RENR4318

Systems Operation (Electrohydraulic/Pilot)

RENR4319

Testing and Adjusting (Hydraulic)

RENR4320

RENR4310

Schematic (Electrohydraulic System)

RENR4362

Schematic (Pilot System)

RENR4324

Electrical System

23, CC

71, 82, 84, 85

14, 15

11, 12

52

5, DD

Operation & Maintenance Manual English

DOUBLE ACTING

INTERNAL PASSAGEWAYS

VARIABLE DISPLACEMENT NON-COMPENSATED

UNIDIRECTIONAL

INTERNAL SUPPLY PRESSURE

COMPLETE

HYDRAULIC MOTORS

Transducer (Fluid)

57, 58, 60, 61, 62, 67, 72, 75 76, 78, 79, 80, 83, SS, WW, XX

Testing and Adjusting

RENR4313

CROSSING AND JOINING LINES

ACCUMULATORS

SPRING

REMOTE SUPPLY PRESSURE

SIMPLIFIED

Electrical Schematic Example

RENR6042

Systems Operation (Steering)

PILOT CONTROL SYMBOLS

PEDAL

Wire Number Identification Codes

Systems Operation

RENR4312

PUSH BUTTON

INTERNAL RETURN

Pressure Symbol

Testing and Adjusting (Electrohydraulic)

Systems

GENERAL MANUAL

T

Specifications (Machine Systems)

Specifications (Steering)

DETENT

THERMAL

Electrical Symbols (Electrical)

RENR4308 RENR4309

Power Train

MANUAL SHUTOFF

Pressure Switch

RENR4321

Specifications

SERVO

SOLENOID and PILOT or MANUAL

SOLENOID and PILOT

64, 65, 66, RR

Media References 950G II AYB 950G II AYL

SOLENOID or MANUAL

EXTERNAL RETURN

B5

Media Number

RETURN BELOW FLUID LEVEL

COMBINATION CONTROLS

1, 14, 15, 16, 17, 18, 19, 20, 21, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 38, 39, 41, 42, 43, 44, 47, 48, 49, 50 51, 54, EE, FF, GG, HH, JJ, KK, LL, NN, PP

70, 73, 74

B1

Auxiliary Pilot Pump Pressure (Close)

RETURN ABOVE FLUID LEVEL

PRESSURIZED

81, 86

A5

FF

VENTED

© 2005 Caterpillar All Rights Reserved

23, 24, 25, 32, 37, 39, 40, 45, 46, MM

A3

GG

BIDIRECTIONAL

Volume 2

Schematic Location

Tilt Cylinder Rod End Pressure

UNIDIRECTIONAL

FLUID STORAGE RESERVOIRS

FIXED DISPLACEMENT

950G II and 962G II Hydraulic Pressure Tap Locations AA

FLOW

RELEASED PRESSURE

% The one stem valve (third function) is an The three stem valve is an optional attachment.The two stem valve is standard.optional attachment field conversion.

BB

ROTATING SHAFTS

TEMPERATURE

PUSH-PULL LEVER

@ Auxiliary Cylinders are an optional attachment.

Description

PILOT CONTROLLED

MANUAL CONTROL SYMBOLS

* Secondary Steering is an optional attachment. # Ride Control is an optional attachment.

Pressure Tap

SHUTTLE

SPRING LOADED

BASIC SYMBOL

Electrical Symbols Table

65

81

Note: Installed on the following machines 950G II - AXR and 962G II - AXS

Component

Valve

E5

Reversing Fan Attachment

950G II and 962G II Hydraulic Components

Relief Valve

Control Valve (Steering)

Volume 1: Pilot Hydraulics and HMU Steering 950G II: 962G II: AYL1-UP AXY1-UP AYS1-UP BAB1-UP AXX1-UP BAC1-UP BAA1-UP BAD1-UP

17

11

60

950G Series II and 962G Series II Wheel Loader Hydraulic System

14

10

E5

PRESSURE

16

Component

INFINITE POSITION

MEASUREMENT

12

Item No.

CHECK VALVES

P T SHIFTED POSITION

10 11

FOUR-WAY

THREE-WAY

AB

P T NORMAL POSITION

15

TWO-WAY

THREE POSITION

ATTACHMENT

LINE RESTRICTION

VARIABLE and PRESSURE COMPENSATED

VALVE PORTS

CONTROL VALVES AB

Relief Valve

Left Neutralizer Valve (Steering)

TWO POSITION

ONE POSITION

8

13

PUMP: VARIABLE and PRESSURE COMPENSATED

2-SECTION PUMP

HYDRAULIC PNEUMATIC ENERGY TRIANGLES

VALVES

VALVE ENVELOPES

9

LINE RESTRICTION (FIXED)

RESTRICTION

PRESSURE COMPENSATION

LINE RESTRICTION (VARIABLE)

SPRING (ADJUSTABLE)

VARIABILITY

SOLENOID

51

CONTROL VALVES

SPRING

FLUID CONDITIONER

6

7

Check Valve

Check Valve (Steering Quad)

MAIN AUX.

5

2

58

3 PUMP or MOTOR

1

59

2

BASIC COMPONENT SYMBOLS

SEBU7459

MACHINE COMPONENT LOCATIONS

52, 53

24 Page,

Component

FLUID POWER SYMBOLS

RENR4322-03 May 2005

RENR4322-03 VOL 2

Item No.

2

1

4

3

3

2

7 6

5

4

AA

7

9

11

10

12

8

BB

1

6

5

13 14

CC

15

A

A

16

17

18

19

20

DD

23

22 25

24 26 B

B

27

28

29

30 31

EE

FF

GG

HH

JJ

KK

LL 32

33

34

38

40

39

C

45

44

43

46

49

48

47

52 51

50

53

D

24 Page, B/W

RENR4322-03 VOL 2

MM

37

42

41

C

36

35

54

D

NN 55

57

56

58

59

60

61

63 PP

64

65

66

E

SS

TT 68

E

67

69

70

UU RR

71

VV WW

73

62

74

75

76

77

72 79

78

80

81 82

LINEAR PATTERNS

F

M

84

85 86

83 XX

F

Implement Pressure Pilot Pressure Return Lines Components

THIS SCHEMATIC IS FOR THE 950G AND 962G SERIES II WHEEL LOADER PART #: 187-6675 CHG 01 Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.

g00986326

1

2

3

4

5

6

7

G