Hummer H1 Service Manual page 530

_________________________________________________________
®
POWER STEERING PUMP REPAIR
Disassembly
(Figures 8-72 through 8-77)
1. Suction fluid from reservoir and disconnect fluid reservoir
hose from pump.
2. Remove power steering pump pulley and bracket.
3. Drain fluid from pump assembly (Figure 8-72).
4. Remove two mounting studs from pump assembly.
PUMP
ASSEMBLY
PUMP BODY
7-S08-062.2
O-RING SEAL
HOUSING
Figure 8-73: Reservoir Removal
05745159
HOUSING
Figure 8-72: Pump Assembly
PUMP BODY
PUMP
SHAFT
Steering System
NOTE: Fitting assembly is spring loaded. Remove care-
fully to avoid losing parts.
5. Remove fitting assembly and O-ring seal. Discard O-ring
seal.
6. Remove flow control valve and valve spring from pump
body.
MOUNTING STUD
MOUNTING STUD
VALVE SPRING
FLOW CONTROL VALVE
CAUTION: Do not overtighten vise as pump body could
be distorted.
7. Place pump body in vise (Figure 8-73).
8. Tap lightly around edge of housing.
9. Remove housing and O-ring seal from pump body.
Discard O-ring seal.
10. Remove three O-ring seals from pump body and discard.
(Figure 8-74).
11. Remove magnet from pump body and discard.
8-39
FITTING ASSEMBLY
O-RING SEAL
4-1-00