Disassembly

Fig. 1 Vane type power steering pump:

Fig. 2 Removing end plate retaining ring:

Fig. 3 Removing flow control valve and spring:

1. Carefully mount pump in vise with soft jaws and remove reservoir cap. When clamping pump in vise, do not exert excessive force on front hub as this may distort drive shaft bushing in housing.
2. Remove rear pump mounting studs and O-ring seal, pressure union and O-ring seal.
3. Remove reservoir, second pressure union O-ring and magnet, if used.
4. Using a small punch, depress end plate retaining ring enough to allow removal from groove. Use the 1-8 inch diameter hole in housing. Then remove retaining ring with screwdriver.
5. Remove end plate which is spring-loaded and will usually sit above housing level. If end plate sticks, a slight rocking action should free it.
6. Remove two pressure springs from pump housing.
7. Remove flow control valve and spring by inverting housing. Do not disassemble flow control valve as it is serviced as a unit and preset at the factory.
8. Remove drive shaft key from slot in shaft. Then with end of shaft pointed downward, press down until shaft is free.
9. Turn assembly over and remove drive shaft and rotary group.
10. Remove rotor retaining ring from groove in drive shaft. Remove rotor and thrust plate from shaft.
11. Remove and discard O-ring seals from pump housing. Remove drive shaft oil seal only if inspection shows necessity for replacement.