Hydraulic Pump Assembly

Power Steering Pump Assembly - CB Series:

^ Tool Required:
- J 7728 Shaft Oil Seal Installer
- Or Equivalent

DISASSEMBLE





1. Retaining ring (37) using punch in access hole.
2. Internal components of pump from pump housing (10) by gently pushing on drive shaft (7). Components should include pressure plate sub-assembly consisting of:
^ End cover (36).
^ Oring seal (35).
^ Pressure plate spring (33).
^ Pressure plate (31).

Drive shaft sub-assembly consisting of:
^ Pump rotor (28).
^ Thrust plate (25).
^ Drive shaft (7).
^ Shaft retaining ring (30).
^ Pump ring (26) and vanes (27).

3. O-ring (32) from pump housing (10).
4. Dowel pins (6).
5. Drive shaft seal (11).
6. End cover (36), pressure plate spring (33) and O-ring (35) from pressure plate (31).
7. Pump ring (26) and vanes (27) from drive shaft subassembly.
8. Shaft retaining ring (30) from drive shaft (7).
9. Pump rotor (28) and thrust plate (25) from drive shaft (7).
10. Clean:
^ All parts in power steering fluid.
^ Dry parts.

11. Inspect the following for scoring, pitting or chatter marks. If noted, replace appropriate parts.
^ Pressure plate (31).
^ Pump ring (26).
^ Rotor (28).
^ Vanes (27).
^ Thrust plate (25).
^ Drive shaft (7).

ASSEMBLE
1. Lubricate new drive shaft seal (11) with power steering fluid.





^ Drive shaft seal (11) into pump housing (10) with tool J 7728.
2. Pump ring dowel pins (6) into pump housing (10).





3. Thrust plate (25) and pump rotor (28) to drive shaft (7).
4. New shaft retaining ring (30) onto drive shaft (7).
5. Drive shaft sub-assembly into pump housing (10).
6. Vanes (27) into pump rotor (28).





7. Pump ring (26), with holes positioned correctly onto dowel pins (6), in pump housing (10).
8. Lubricate new O-ring (32) with power steering fluid.
^ O-ring (32) into groove in pump housing (10).
9. Pressure plate (31).
10. Pressure plate spring (33).
11. Lubricate new O-ring (35) with power steering fluid.
^ O-ring (35) into end cover (36).
12. Lubricate outer edge of end cover (36) with power steering fluid.
13. Press end cover (36) into pump housing (10).





14. Retaining ring (37) into groove in pump housing (10), with ring opening near access hole in pump housing.