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INTERACTIVE SCHEMATIC

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Cover Page

Information

Schematic

Machine Views

Component Table

Tap Table

Fluid Power Symbols

Electrical Symbols

Front Frame

Rear Frame

Tap Views

Features

Options

Bookmarks X

EC-C3

EC-C2 E-C60

E-C61

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RENR8828-04January 201

966H and 972H Wheel LoaderHydraulic System

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COMPONENT TABLE

DescriptionPart

NumberMachineLocation

SchematicLocation

Accumulator Gp - Pilot 355-9981 1 E-1

Accumulator. Gp - Ride Control 325-7131 2 F-2

Cylinder Gp - Lift 242-4274

242-4275

(LH)

(RH)

3

F-2

Cylinder Gp - Tilt

Lift

Tilt

Cylinder Gp - Tilt - 966 Logger (Atch)

(966 Standard)

(972 Standard)

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

356-2220

356-2219

358-5190358-5189

4

F-3

Filter Gp - Pump Case Drain 337-4102

5

F-3

F-3

6

7

Pump Gp - Implement 292-8768

8

C-8

9

Breather 258-2829 C-7

10

11

D-7

Screens - Return 9T-9227 C-7,8

12

13

Tank Gp - Hydraulic Oil 340-5659

15

C-7

Valve Gp - Backpressure 353-7179

14

E-7

Valve Gp - Relief (Auxiliary Function) 272-2334 E-1

16

Valve Gp - Relief (Make-Up - Lift) 234-4869 E-3

17

Valve Gp - Relief (Margin) 328-0730 E-1

18

Valve Gp - Relief (Ride Control) 4T-7581 E-2

F-1

Valve Gp - 2 Function w/o Ride Control

3 Function w/ Ride Control (Atch)

3 Function w/o Ride Control (Atch)

261-3945

2 Function w/ Ride Control (Atch) 261-2337

261-3972

261-2338

3 Function w/ Ride Control (Logger Atch) 256-3644

21

26

27

28

Valve Gp - Dead Engine Lower 112-181722

E-7

23

24

25

Component Locations

Implement System

356-2220

Valve Gp - Relief (Load Sense) 346-0474 E-3

19

Valve Gp - Relief (Tilt) 332-1985 F-3

20

Valve Gp - Relief (Tilt - Logger Atch) 332-1986 F-3

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SAMPLING PORT LOCATION TABLE

Tap

Number Description

Schematic

Location

8-FerusserPekarBtnorFB

8-BerusserPekarBraeRC

6-FerusserPekarBkraPD

8-EBrake Accumulator Pressure1G4-EImplement Pump Discharge Pressure2G

G3 D-7

G4 D-7Steering Pump Discharge Pressure

3-BSteering Pump Load Sense Pressure5G

7-DFan Pump Discharge Pressure6G

8-DFan Pump Load Sense Pressure7G

G8 A-7

G9 B-5

Tap Location

Pressure and Sampling

Implement Pump Load Sense Pressure

CCS Steering Neutral Pilot Pressure

CCS Steering Left Pilot Pressure

CCS Steering Right Pilot Pressure 1-EG10

6-A

Case Drain Air Bleed

G11

G12 D-8

8-DtroPgnilpmaSdiulFSOS

CCS Steering Resolved Pilot Pressure

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FLUID POWER SYMBOLS

ONE POSITION TWO POSITION THREE POSITION

VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL

TWO-WAY THREE-WAY FOUR-W

SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION

(FIXED)

2-SECTION PUMP

MAIN AUX.

SPRING

(ADJUSTABLE)

VARIABILITY LINE RESTRICTION

(VARIABLE)

LINE RESTRICTIONVARIABLE and PRESSURE

COMPENSATED

PRESSURE

COMPENSATION

PUMP: VARIABLE and

PRESSURE COMPENSATED

ENERGY TRIANGLES

HYDRAULIC PNEUMATIC

MEASUREMENT ROTATING SHAFTS

FLUID STORAGE RESERVOIRS

VALVE ENVELOPES VALVE PORTS

BASIC COMPONENT SYMBOLS

FLUID CONDITIONERPUMP or MOTOR

VALVES

BASIC

SYMBOL

SPRING

LOADED

CHECK VALVES

NORMAL POSITION

A B

P T

A B

P T

SHIFTED POSITION INFINITE POSITION

CONTROL VALVES

ATTACHMENT

SHUTTLE PILO

CONTRO

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ELECTRICAL SYMBOLS

Hydraulic Symbols (Electrical)

Transducer

(Fluid)

Transducer

(Gas / Air)

G

Generator

Electrical WirePressure Switch

MElectric Motor

Pressure Switch

(Adjustable)

Temperature Switch

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

Electrical Symbols (Electrical)

T

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12345678

A

B

C

D

E

F

HYDRAULICCIRCUIT C

IMPLEMENT PIL

BRAKE COOLIN

IMPLEMENT PU

TRANSMISSIO

PRIMARY STEE

IMPLEMENT PU

STEERING CIRC

FANPUMP CIR

SUPPLY LINE

QUICK COUPLE

BRAKE CONTR

AUXILIARY CIR

MAINRELIEF VA

DRAIN/ RETUR

TILT CYLINDER

LIFT CYLINDER

SECONDARY S

ELECTRICALC

LINE PATTERNS

Drain/ ReturnLines

Component Group

Pilot / LoadSensingPressure

PressureLine

HMU

PA

PB

T

B

A

P

L R

PT

LS

LS P T

PS

A1 A2

E1

F

IMPLEMENTPUMPDISCHARGE

IMPLEMENTLOADSENSE SIGNAL

IMPLEMENTLOADSENSE RELIEF/PILOTRETURN

QUICK COUPLERSUPPLY

IMPLEMENTRETURN

AXLE OILCOOLERRETURN

AXLE OILCOOLERSUPPLY

B

SL

X

M

LS

REARAXLE

P T

T

P

LS

PA

PB

B A

PORTALEVERREARWARD,LEFTHANDLINE ONBOOM(WHENVIEWEDFROMCAB)

PORTB LEVERFORWARD,RIGHTHANDLINE ONBOOM(WHENVIEWEDFROMCAB)

RACKBACK

DUMP

HOLD

DUMP

RAISE

LOWER/FLOAT

RAISE

HOLD

LOWER

FLOAT

HOLD

PORTA

PORTB

PORTA

PORTB

E5

E6

E4

RACKBACK

E2

E3

E7

E8

E9

E10

E11

E12E13

B1A1 A2 B2 A3 B3 A4B4

PRIMARYPILOTSUPPLY-CCS STEERING ATTACHMENT

FRONTAXLE

E14

T

P

P

LS

LS

P

T

T

NC

NO

CC

TO TRANSMISSION CONTROL

TO BRAKELIGHTS

APPLY

RELEASE

AXLE

RESERVIOR

RESERVIOR

AXLE

TRANSMISSION

CONTROL

C

NO

NC

LS

HMUSTEERING (STANDARDCONFIGURATION)

(63)VALVE GPOUTPUT

PRESSURE210-5587

(64)VALVE GPPARK BRAKE

106-1774(53)ACTUATORASPARK BRAKE154-8042

(67)CYLINDERGPQUICK COUPLER

311-1463

(68)VALVE GPQUICK COUPLER180-8585

(21)VALVE GPMANUALLOWER112-1817

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

(4)CYLINDERGPLIFT- (LH)

242-4274

(5)CYLINDERGPLIFT- (RH)242-4275

(2)ACCUMULATORRIDE CONTROL325-7131

(23)VALVE GPLOADSENSERELIEF346-0474

(32)VALVE GPPRESSUREREDUCING313-7668

(32)VALVE GPPRESSUREREDUCING313-7668

(32)VALVE GPPRESSUREREDUCING313-7668

(25MARE328

(35)CYLINSTEERIN314-9336

(50)VALVE GP

STEERINGCROSSOVERRELIEF129-8222

(48)VALVE GPSTEERING

BACKUPRELIEF132-5258

(51)VALVE GPSTEERING (HMU)

142-3996

(11)FILTERGPCASE DRAIN337-4102

(3)BREATHER258-2829

(14)TANK GPHYDRAULIC340-5959

(54)BREAKERVACUUM220-0814

(33)VALVE -MANUALPUMPCASE FILL8T-6907

(13)SCREEN-RETURN 9T-9227

(66)VALVE GPDIVERTER237-8180

(56)FILTERGPKIDNEYLOOP330-9358

(61)VALVE GPCHECK (FILTERANTIDRAINBACK)307-5393

(55)COOLERHYDRAULICOIL244-4498

(59)PUMPGPFAN

254-5147

(62)VALVE GPCHECK(COOLERBYPASS)244-1426

(65)VALVE GPSAMPLING PORT8C-3451

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

MOTORGP-FAN

(60)VALVE GPCHARGE (FANDRIVE ANDBRAKE)352-1587

(52)ACCUMULATORBRAKE

198-9841

(21)VALVE GP-LOWER(DEADENGINE)

112-1817

(20)VALVE GPBACKPRESSURE

353-7179

(12)VALVE GPIMPLEMENT

292-8768

(69)PUMPGPTARNSMISSION

241-8686

(41)PUMPGPSTEERING241-9157

(43)VALVE GPCHECK

141-2597

(40)PUMPGPSECONDARYSTEERING (ATCH)275-8544

(47)VALVE GPSHUTTLE (ATCH)8J-6875

(45)VALVE GPPILOT(CSS ATCH)

164-4116

(44)VALVE GPCHECK

(CSS ATCH)111-7775

(37)NEUTRALIZERCCS (ATCH)321-5283

(42)SCREEN(ATCH)154-2883

(50)VALVE GP-STEERINGCROSSOVERRELIEF

111-7775

(46)VALVE GP-PRESSUREREDUCING (ATCH)

114-1267

(48)VALVE GP-RELIEFSTEERING BACKUP

132-5258

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

(34)CYLINDERGPSTEERING314-9336

(39)PUMPGPHMUMETERING349-6093

(38)ORIFICE108-2144

(36)NEUTRALIZERHMU296-5662

(22)VALVE GP-RELIEF(AUX FUNCTION)272-2334

IMPLEMENTVA

(15)2FUNCTIONW/O RIDE (16)2FUNCTIONW/ RIDE C(17)3FUNCTIONW/O RIDE (18)3FUNCTIONW/ RIDE C(19)3FUNCTIONW/ RIDE CO

(32)VALVE GPSOLENOID(PRESSUREREDUCING)313-7668

(32)VALVE GPSOLENOID(PRESSUREREDUCING)

313-7668

(32)VALVE GPSOLENOID(PRESSUREREDUCING)313-7668 (26)VALVE GP-RELIEF

(RIDE CONTROL)4T-7581

(29)VALVE GP-SHUTTLE235-6157

(30)VALVE GPSOLENOID

(ANTI-DRIFT)328-4314

(30)VALVE GPSOLENOID

(ANTI-DRIFT)328-4314

(30)VALVE GPSOLENOID

(ANTI-DRIFT)328-4314

(27)VALVE GPRELIEF (TILT)

332-1985

(28)VALVE GPRELIEF

(LOGGER ATCH)332-1985

(24)VALVE GPRELIEF

(MAKE UPLIFT)234-4869

G12

SOS

G7 G6

G3

G4

G2

G5G5

G1

G8

G11

G9G10

SOLENOID VALVE REFERENCES OL EN OI D LO CA TI ON S OL EN OI DN AM E

E 1 F AN / BR AK E V AL VE D EM AN DS PE ED FA N SO LE NO ID

E 2 I MP LE ME NT VA LV E - L IF T L OW ER SO LE NO ID

E 3 I MP LE ME NT VA LV E - LI FT R AI SE S O LE NO ID

E4 IMPLEMENTVALVE - R IDE CONTROL RIDE CONTROLBALANCE SOLENOID

E5 IMPLEMENTVALVE - R IDE CONTROL RIDE CONTROLHEADENDCHECK SOLENOID

E6 IMPLEMENTVALVE - R IDE CONTROL RIDE CONTROLRODENDCHECK SOLENOID

E 7 I MP LE ME NT VA LV E - T IL T D UM PS OL EN OI D

DB

C

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LEFT SIDE REAR VIEW

62

60

59

58

54

43

40

20

VIEW

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LEFT SIDE FRONT VIEW (HMU)

68

64

53

3836

35

32

3130

29

2725

23

22

19

18

17

16

15

109876

5

2

1

VIEW

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LEFT SIDE FRONT VIEW (CCS)

G11 D

6853

504946

45

44

42

37

35

1918171615

109876

5

2

VIEW

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RIGHT REAR VIEW

G12

G7

G6

69

65

6461

60

59

57

56

55

52

51

41

34

33

14

13

12 11

3

VIEW

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RIGHT SIDE FRONT VIEW (HMU)

G10G5

G3G2

68

67

63

51

39

36

32

30

28

2624

22

21

1918

1716

15

109876

4

2

VIEW

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RIGHT SIDE VIEW (CCS)

SOS

G9G8

G4 G1

C B

66 48

47

VIEW