TM 9-2320-289-34
8-5.
POWER STEERING PUMP REPAIR (Con’t).
3 .
Inspect thrust plate and pressure plate for wear on plate surfaces. Replace if badly worn or
damaged.
4 .
Inspect drive shaft seal for leakage or damage. Replace drive shaft seal if leaking or damaged.
5 .
Inspect drive shaft for excessive burning or scoring. Replace if burned or scored.
6 .
Inspect control valve, Replace control valve if it does not move freely in valve bore.
c .
ASSEMBLY
NOTE
Ensure that all “O” rings and seals are lubricated with hydraulic fluid
before assembly.
1 .
Install 2 new “O“ rings (27 and 28)
into grooves in pump housing (1).
2 .
Using suitable socket, install new
drive shaft seal (26).
3 .
Install 2 dowel pins (29) into pump
housing (1).
4 .
Install thrust plate (19) on drive shaft (18) with countersunk side toward drive shaft. Install rotor
(20) onto thrust plate and install new retaining ring (21 ).
5 .
Install drive shaft (18) assembly in pump housing (1), indexing dowel pins (29) in pump
housing with holes in thrust plate (19).
6 .
Install vanes (22) in rotor (20). Install pump ring (23) over vanes and rotor, indexing dowel pins
(29) in pump housing (1) with small holes in pump ring, and recesses in thrust plate (19) with
large holes in pump ring. Ensure that pump ring is fully seated.
7 .
Install pressure plate (24) on pump ring (23) and lightly tap into place. Install pressure plate
spring (25).
TA50503
8-36
