Hummer H1 Service Manual page 531

8-40 Steering System
O-RING
SEALS
PUMP BODY
Figure 8-74: "O" Ring Seal Removal
12. Remove retaining ring from pump body (Figure 8-75).
13. Remove end plate and pressure plate spring from pump
body.
PRESSURE PLATE
PUMP RING
O-RING SEALS
Figure 8-77: Seal Removal
4-1-00
__________________________________________________________
O-RING SEAL
MAGNET
RETAINING RING
VANES
ROTOR
Figure 8-76: Pressure Plate and Rotor Removal
PUMP BODY
DRIVESHAFT
SEAL
RETAINING RING
END PLATE
PUMP BODY
Figure 8-75: End Plate Removal
CAUTION: If end of driveshaft in steering pump housing
is corroded, clean with an abrasive crocus cloth before
removing shaft. Failure to do so may result in damage to
shaft bushing. If bushing is damaged, replace power
steering pump assembly.
14. Tap lightly on driveshaft until pressure plate is free
15. Remove pressure plate (Figure 8-76).
16. Remove pump ring and vanes from pump rotor.
17. Remove driveshaft, rotor, and thrust plate assembly from
pump body.
18. Remove retaining ring from driveshaft.
19. Remove rotor from driveshaft.
20. Remove thrust plate from driveshaft.
21. Remove dowel pins from pump body.
THRUST PLATE
DRIVESHAFT
DOWEL PINS
22. Remove two O-ring seals from pump body. Discard O-
ring seals (Figure 8-77).
23. Remove driveshaft seal from pump body. Discard
driveshaft seal.
PRESSURE PLATE SPRING
PUMP BODY
®