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 /Return 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 Componentsar e shown installed on afully operable machine with the keyand engine offandtransmissionshifterin neutral.