Reverse Rotation Pump

Fig. 8 Power Steering Pump Assembly Overhaul. Reverse Rotation:

DISASSEMBLE
1. Disconnect battery ground cable, then remove power steering pump from vehicle. Refer to individual chassis chapter for procedure.
2. Remove retaining ring using punch in access hole, Fig. 8.
3. Remove internal components from pump assembly by gently pushing on driveshaft. Components should include pressure plate and subassembly, consisting of end cover, O-ring seal, pressure plate spring and pressure plate. Driveshaft subassembly, consisting of pump rotor, thrust plate, driveshaft and shaft retaining ring.
4. Remove O-ring from pump housing.
5. Remove dowel pins and driveshaft seal.
6. Remove end cover, pressure plate spring and O-ring from pressure plate.
7. Remove pump ring and vanes from driveshaft subassembly, then shaft retaining rings from driveshaft.
8. Remove thrust plate and pump rotor from driveshaft.

INSPECTION
1. Clean all parts in power steering fluid, then dry thoroughly.
2. Inspect pump ring, vanes, thrust plate, pressure plate, rotor and driveshaft for scoring, pitting or chatter marks, replacing parts as necessary.

ASSEMBLE
1. Lubricate new driveshaft seal with power steering fluid and, using seal installer tool No. J 7728, or equivalent, press driveshaft seal into pump housing.
2. Install pump ring dowel pins into housing.
3. Install thrust plate and pump rotor onto driveshaft.
4. Install new shaft retaining ring onto driveshaft.
5. Install driveshaft subassembly into housing.
6. Install vanes into pump rotor.
7. Install pump ring, with holes positioned correctly onto dowel pins in housing.
8. Lubricate new O-ring with power steering fluid and install O-ring into groove in pump housing.
9. Install pressure plate and pressure plate spring.
10. Lubricate new O-ring and install O-ring into end cover.
11. Lubricate outer edge of end cover with power steering fluid and press end cover into housing.
12. Insert retaining ring into groove in housing, with ring opening near access hole opening.
13. Remove plug and any chips, then coat end of new return tube with Loctite solvent 75559 and Loctite 290 adhesive, or equivalents, and press return tube into housing until bottomed.