966h.pdf

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Features Cover Page Information Component Table Tap Table Fluid Power Symbols Electrical Symbols

Schematic Machine Views Front Frame Rear Frame Tap Views

The Bookmarks panel will allow you to quickly navigate to points of interest. EC-C2 EC-C3

E-C60 E-C61

RENR8828-04 January 2012

966H and 972H Wheel Loader Hydraulic System

COMPONENT TABLE

Component Locations Part Machine Number Location

Description

Schematic Location

Implement System Accumulator Gp - Pilot

355-9981

1

Accumulator. Gp - Ride Control

325-7131

2

F-2

258-2829

3

C-7

242-4274 242-4275

4 5

F-2

356-2219 356-2220

6 7

F-3

Cylinder Gp - Tilt - (966 High Lift - Atch) Tilt - (972 High Lift - Atch)

358-5189 358-5190

8 9

F-3

Cylinder Gp - Tilt - 966 Logger (Atch)

356-2220

10

F-3

Filter Gp - Pump Case Drain

337-4102

11

C-8

Pump Gp - Implement

292-8768

12

D-7

Screens - Return

9T-9227

13

C-7,8

Tank Gp - Hydraulic Oil

340-5659

14

C-7

Valve Gp - 2 Function w/o Ride Control 2 Fu Fu nc nction w/ w/ Ri Ride Co Control (A (Atch ) 3 Function w/o Ride Control (Atch) 3 Function w/ Ride Control (Atch) 3 Function Function w/ Ride Ride Control Control (Logger (Logger Atch) Atch)

261-3945 261 -2 -2337 261-3972 261-2338 256-3644 256-3644

15 16 17 18 19

F-1

Valve Gp - Backpressure

353-7179

20

E-7

Valve Gp - Dead Engine Lower

112-1817

21

E-7

Valve Gp - Relief (Auxiliary Function)

272-2334

22

E-1

Valve Gp - Relief (Load Sense)

346-0474

23

E-3

Valve Gp - Relief (Make-Up - Lift)

234-4869

24

E-3

Valve Gp - Relief (Margin)

328-0730

25

E-1

4T 7581

26

E2

Breather Cylinder Gp - Lift Lift Cylinder Gp - Tilt Tilt

(LH) (RH) (966 Standard) (972 Standard)

Valve Gp Relief (Ride Control)

E-1

SAMPLING PORT LOCA LO CATION TION TABLE

Tap Location Pressure and Sampling Tap Number

Description

Schematic Location

B

Fr ont Br ake Pr essur e

F -8

C

Rear Br ake Pr essur e

B -8

D

Par k Br ake Pr essur e

F -6

G1

Brake Accumulator Pressure

E -8

G2

Implement Pump Discharge Pressure

E-4

G3

Implement Pump Load Sense Pressure

D-7

G4

Steering Pump Discharge Pressure

D-7

G5

Steering Pump Load Sense Pressure

B -3

G6

Fan Pump Discharge Pressure

D-7

G7

Fan Pump Load Sense Pressure

D-8

G8

CCS Steering Neutral Pilot Pressure

A-7

G9

CCS Steering Left Pilot Pressure

B-5

G10

CCS Steering Right Pilot Pressure

E -1

G11

CCS Steering Resolved Pilot Pressure

A-6

G12

Case Drain Air Bleed

D-8

SOS

Fluid Sampling Por t

D-8

FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS

MAIN AUX.

PUMP or MOTOR

SPRING (ADJUSTABLE)

VARIABILITY

CONTRO L VALVES

SPRING

FLUID CONDITIONER

LINE RESTRICTION (VARIABLE)

PRESSURE COMPENSATION

TWO POSITION

RESTRICTION

LINE RESTRICTION (FIXED)

HYDR HY DRAU AULI LIC C PNEU PN EUMA MATI TIC C ENERGY ENERG Y TRIANG TRIANGLES LES

THREE POSITION

P T NORMAL POSITION

PUMP: VARIABLE and PRESSURE COMPENSATED

LINE RESTRICTION

ATTACHMENT ATTAC HMENT

VALVE PORTS

TWO-WAY

THREE-WAY

CONTROL VALVES A B

2-SECTION PUMP

VARIABLE and PRESSURE COMPENSATED

VALVES

VALVE VAL VE ENVELOPES ENVEL OPES

ONE POSITION

CHECK VALVES

A B

P T SHIF SH IFTE TED D PO POSI SITI TION ON

INFI IN FINI NITE TE PO POSI SITI TION ON

BASIC SYMBOL

SPRING LOADED

SHUTTLE

FLUID STORAGE RESERVOIRS

VENTED

FOUR-WAY

PRESSURIZED

MEASUREMENT

RETURN ABOVE FLUID LEVEL

RETURN BELOW FLUID LEVEL

ROTATING SHAFTS

PILOT CONTROLLED

ELECTRICAL SYMBOLS Hydraulic Symbols (Electrical)

G Transducer (Fluid)

Pressure Switch

Transducer (Gas / Air)

Pressure Switch (Adjustable)

Generator

Temperature Switch

Electrical Symbols (Electrical)

T

M Electric Motor

Electrical Wire

8

7

6

5

4

3

2

1

AXLE OILCOOLERSUPPLY

TOBRAKE LIGHTS AXLE

(63)VALVEGP OUTPUT PRESSURE 210-5587

TOTRANSMISSION CONTROL

(67)CYLINDERGP QUICKCOUPLER 311-1463

(64)VALVEGP PARKBRAKE 106-1774 RELEASE APPLY

NO

RESERVIOR

(53)ACTUATORAS PARKBRAKE 154-8042

FRONTAXLE

C

C

NC NO

B

D

TRANSMISSION CONTROL

(30)VALVEGP SOLENOID (ANTI-DRIFT) 328-4314 A1

(21)VALVE GP MANUALLOWER 112-1817

(20)VALVE GP BACKPRESSURE 353-7179

(52)ACCUMULATOR BRAKE 198-9841

A1

F

(32)VALVEGP SOLENOID (PRESSURE REDUCING) 313-7668

B2

A3


B4

B3

A4

(22)VALVE GP-RELIEF (AUXFUNCTION) IMPLEMENTVALVEGP 272-2334 (15)2FUNCTIONW/ORIDE CONTROL CONTROL 261-3945 (16)2FUNCTIONW/RIDE CONTROL(ATCH) 261-2337 (17)3FUNCTIONW/ORIDE CONTROL(ATCH) 261-3972 (18)3FUNCTIONW/RIDE CONTROL(ATCH) 261-3338 (19)3FUNCTIONW/ RIDECONTROL(LOGGERATCH) CONTROL(LOGGERATCH) 256-3644 E9

E12 E5

(1)ACCUMULATOR PILOT 355-9981

E6 E8

E3

RACK BACK

E10

(26)VALVE GP-RELIEF (RIDE CONTROL) 4T-7581

RAISE

PORT A

A2

G2

PS

(60)VALVE GP CHARGE (FAN DRIVEAND BRAKE) 352-1587

A2

(24)VALVEGP RELIEF (MAKE UPLIFT) 234-4869

E G1

B1

(30)VALVEGP SOLENOID (ANTI-DRIFT) 328-4314


E13

(68)VALVE GP QUICKCOUPLER 180-8585

(21)VALVE GP-LOWER (DEADENGINE) 112-1817

PORTB LEVERFORWARD, RIGHTHANDLINE ONBOOM (WHENVIEWEDFROMCAB) PORTALEVERREARWARD, LEFTHANDLINE ONBOOM (WHENVIEWEDFROMCAB)

(28)VALVE GP RELIEF (LOGGERATCH) 332-1985 (27)VALVE GP (30)VALVE GP RELIEF(TILT) SOLENOID 332-1985 (ANTI-DRIFT) 328-4314

C

AXLE OILCOOLERRETURN

(2)ACCUMULATOR RIDE CONTROL 325-7131

(5)CYLINDERGP LIFT- (RH) 242-4275

(4)CYLINDERGP LIFT- (LH) 242-4274

TILTCYLINDER (6)966STANDARD356-2219 (6)966STANDARD 356-2219 (7)972STANDARD 356-2220 (7)972STANDARD356-2220 (8)966HIGHLIFT 358-5189 (9)972HIGHLIFT 358-5190 (10)966LOGGER 356-2220

NC

F

RACK BACK

RAISE

HOLD

HOLD

E

HOLD

LOWER

DUMP

G10

PORT A E4

PORT B

(31)VALVE GP PRESSURE REDUCING 335-1074

E14 E1

FLOAT

MOTORGP-FAN (57) 161-8919 (58) 334-6234(ATCH)

F

(62)VALVE GP CHECK (COOLER BYPASS) 244-1426

LS (59)PUMPGP F AN 254-5147

(65)VALVEGP SAMPLINGPORT 8C-3451

QUICKCOUPLERSUPPLY

T

G7

IMPLEMENTLOADSENSERELIEF/PILOTRETURN

G6

PORT B

E2

(23)VALVEGP LOADSENSE RELIEF 346-0474

IMPLEMENTLOADSENSESIGNAL

G3

(55)COOLER HYDRAULICOIL 244-4498

D

LOWER/ FLOAT

DUMP E7

IMPLEMENTRETURN

P

E11

(32)VALVEGP PRESSURE REDUCING 313-7668



(29)VALVE GP-SHUTTLE 235-6157

(25)VALVEGP MARGIN RELIEF 328-0730

IMPLEMENTPUMPDISCHARGE

X (12)VALVE GP IMPLEMENT 292-8768

(61)VALVE GP CHECK (FILTER ANTIDRAINBACK) 307-5393

G4

D

PRIMARYPILOTSUPPLY-CCSSTEERINGATTACHMENT

LS

SOS (56)FILTERGP KIDNEYLOOP 330-9358

B

L

(69)PUMPGP T ARNSMISSION 241-8686

(51)VALVEGP STEERING(HMU) 142-3996

LS

S

LS LS

G12 (66)VALVEGP DIVERTER 237-8180

(50)VALVEGP STEERING CROSSOVERRELIEF 129-8222

(41)PUMPGP STEERING 241-9157 (11)FILTERGP CASEDRAIN 337-4102

PB B A

(33)VALVE -MANUAL PUMPCASE FILL 8T-6907

C

(54)BREAKER V ACUUM 220-0814

(35)CYLINDERGP STEERING 314-9336

PA

M P P

(40)PUMPGP SECONDARY STEERING(ATCH) 275-8544

P

C

(43)VALVEGP CHECK 141-2597 P

(3)BREATHER 258-2829

T T HMU

T

T

C (13)SCREEN-RETURN 9T-9227

(48)VALVEGP STEERING BACKUPRELIEF 132-5258

(14)TANKGP HYDRAULIC 340-5959 (36)NEUTRALIZER HMU 296-5662

(34)CYLINDERGP STEERING 314-9336

REARAXLE

(38)ORIFICE 108-2144

AXLE

L

R

RESERVIOR

B (42)SCREEN(ATCH) 154-2883 (44)VALVEGP CHECK (CSS ATCH) 111-7775 (45)VALVE GP PILOT(CSS ATCH) 164-4116

(39)PUMPGP HMUMETERING 349-6093

(49)VALVE GP-STEERING (CCS ATCH) 133-1728

(50)VALVE GP-STEERING CROSSOVERRELIEF 111-7775 B

B

A

LS

LS

G9 G10

G5

G5

T

P

PA

HMUSTEERING (STANDARDCONFIGURATION) (37)NEUTRALIZER CCS (ATCH) 321-5283

PB

HYDRAULICCIRCUIT COLORDESCRIPTIONS T

P

IMPLEMENT PILOT SUPPLY OIL IMPLEMENT PUMP OUTPUT TRANSMISSIONPUMP PRIMARYSTEERINGPUMPCIRCUIT IMPLEMENTPUMPLOADSENSECIRCUIT STEERINGCIRCUIT

LEFT SIDE REAR VIEW VIEW ALL CALLOUTS

54

62 20 43

58 59

40

60

LEFT SIDE FRONT VIEW (HMU) 22

31

30

25 6

7

8

9

10

VIEW ALL CALLOUTS

27

1 23

64

36

38

29 32

5

2 16

18 17

68 19

53

35

LEFT SIDE FRONT VIEW (CCS) VIEW ALL CALLOUTS

6

7

8

9

10 44

37

5

D

G11

19 15 16 17 18

68

45

53

2

42

46

49

50

35

RIGHT REAR VIEW VIEW ALL CALLOUTS

3 13 57

33

65

41

14 G12

55

59

51

G7 G6

60

69

12

34

52

11

56

61

64

RIGHT SIDE FRONT VIEW (HMU) VIEW ALL CALLOUTS

26

24 30 63

G5

G10

28

6

7

8

9

10

36 22 32

39

4

51

G2 G3

21

2

68

15

16

17

18

67 19

RIGHT SIDE VIEW (CCS) VIEW ALL CALLOUTS

SOS

C G4

G1

B

47

966h.pdf

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