Power Steering Pump: Disassembly

WARNING: This page does not describe the selected car, but rather 36 other vehicles, including the 1986 Jeep Wagoneer, 1986 Jeep Pickup, 1986 Jeep Grand Wagoneer, 1986 Jeep Comanche, and 1986 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Do not use a hammer to remove pulley. Drain pump reservoir, clean exterior of unit and remove mounting bracket(s). Using a puller, withdraw pulley from shaft. See Fig 1 .

Fig 1: Removing Pump Pulley DO NOT use hammer to remove pulley.
Clamp pump (with shaft pointing downward) in a soft jawed vise. Ensure vise grips pump at square boss and shaft housing. Remove pressure line union and "O" ring seal. Remove reservoir retaining studs.
Tap against filler tube with plastic hammer to loosen reservoir on pump body. Remove reservoir from body, then withdraw and discard "O" ring seals.
Using a 1/8" diameter punch, tap end plate retaining ring around until one end of ring is near hole in pump body. Insert punch in hole far enough to disengage ring from groove in pump bore, then use a screwdriver and pry ring out of body. Tap end plate with a soft-faced hammer to break it loose from housing. See Fig 2 .

Fig 2: Removing Retaining Ring for Pump End Plate
Tap end plate with a soft faced hammer to break it loose. Spring tension should push plate up. Remove spring. Remove pump from vise.
Place pump in inverted position on flat surface, and tap end of drive shaft with soft-faced hammer to loosen pressure plate, rotor, and thrust plate assembly from body.
Lift pump body off rotor assembly (flow control valve and spring should also slide out of bore). Remove and discard end plate and pressure plate "O" rings. Pry drive shaft oil seal from body using a screwdriver.
Inspect seal bore in housing for burrs, nicks, or score marks that would allow oil to by-pass outer seal surface. Lift pressure plate and cam ring from rotor, then remove rotor vanes.
Clamp drive shaft in soft-jawed vise, with rotor and thrust plate facing up, and remove rotor lock ring from shaft. Use care not to nick shaft or rotor. Slide rotor and thrust plate off shaft, and remove shaft from vise.