966H 972H

8

9

7

6

5

4

2

3

1

41

49a 49b FRONT AXLE

51

TILT

15

20

21

LIFT

RELEASE  APPLY

50 52

 AUX 46 47

F

53

TOBRAKE LIGHTS

YY

24

R

TOTRANSMISSIO NCONTROL

 A1

F

30

PS

45

  HITCH

H

 A2

NO

B4

QQ

A4

NC C

PP

48

RACK 

23

25

C

RR

BACK 

RAISE HEAD END

F

GG To Fan Motor

P

LS

T

RACK  BACK 

HEAD END

RAISE

BRAKE SYSTEM

CC E HOLD

HYDRAULIC TANK

To Case Drain  Manifold

REAR AXLE

E

HOLD

HOLD

DUMP

ROD END

LOWER

12

8 8 7

a1

FLOAT

10

CROSSOVER RELIEF

LL

KK

CYL PORT "B"

CYL PORT "A" SHUTTLE VLV

LOWER/ DUMP

LOAD SENSING PUMP PORT

ROD END

FLOAT

DIRECTIONAL SPOOL

LS

DR

D )(

PILOT PORT"A"

P

22

26

FOR REVERSING FAN SEE ITEM 42 & 43.

6

36 T

QUICKCOUPLER

17

NN

C2 TO REAR BRAKES

TO FRONT BRAKES

TO PARKING BRAKE

 A1

PILOT PORT"B"

b1 19

MM

9

TANK PORT

BACK UP RELIEF

PRESSURE REDUCING VALVE

18 REVERSING FAN

42

A2

43

P

a1

C1 T

P

ZZ

T

c1

16

C

REGULATED PRESS. PORT TO PILOT VALVE

11

e1

PS

   1    0   -   2   r    8   o    l    2   o    C    8  ,    8  e   g   a    R    P    0    N    3    E    R

D

MAKE UP CHECK

1

FF

17

30

C

d1

COMMAND CONTROL STEERING  AND 3PC IMPLEMENT ATTACHMENT

LINE PATTERNS PressureLine HYDRAULIC

CIRCUIT

COLOR

Pilot/LoadSensingPressure

DESCRIPTIONS

IMPLEMENT PUMP OUTPUT IMPLEMENT PILOT SUPPLY OIL

SECONDARY STEERING CIRCUIT IMPLEMENT PUMP LOAD SENSING CIRCUIT

 AirLine

SUPPLY LINE DRAIN / RETURN LINE

27

P

LS

CALLOUTS

LIFT CYLINDER CIRCUIT TILT CYLINDER CIRCUIT

T

 AUXILIARY CIRCUIT

YY

Taps (Pressure,Sampling,Sensor)byletter 

52

Components bynumber 

BRAKE CHARGE VALVE AND FAN CONTROL CIRCUIT BRAKE CONTROL CIRCUIT

Connection b1 only for Command Control Steering B

HH

4 3

b1

PILOT PORT "A"

34 EE

e1

28  AA

25

B

2

DD

SOS

CYL PORT "B"

4

 Attachment

MAIN RELIEF VALVE LOAD SENSING CIRCUIT

5

PILOT PORT "B"

ComponentGroup

STEERING CIRCUIT

F

PILOT CONTROL SPOOL

Drain/ReturnLines n Lines

PRIMARY STEERING PUMP CIRCUIT

CROSSOVER RELIEF

e1 d1

DIRECTIONAL SPOOL PUMP PORT

14 1

29

MAKE-UP CHECKS

35 32

CYL PORT "A"

31

BACK-UP RELIEF

c1

c1

HMU SUPPLY PORT

FF

 A

 A

HMU STEER AND 3PC IMPLEMENT THIS SCHEMATIC IS FOR THE 966H AND 972H WHEEL LOADER

13

33

PART #: 242-0337 CHG 07 & BRAKE SYSTEM PART # 236-9049 CHG 06 Componentsareshowninstalledonafully operablemachinewiththekey andengine offandtransmissionshifterinneutral.

d1 9

8

7

6

5

RefertotheappropriateServiceManualforTroubleshooting,SpecificationsandSystemsOperations

4

3

2

1