Power Steering Pump: Reassembly
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.
- Lubricate all "O" rings and seal areas with power steering fluid. On Jeeps, use petroleum jelly to lubricate "O" rings. Place pump body on a flat surface. Drive a new shaft seal in until it bottoms on shoulder in bore.
- Lubricate seal with power steering fluid, then clamp body in vise with shaft pointing downward. Install end plate and pressure plate "O" rings in groove on body. Install body to reservoir "O" rings and install on pump body.
- With drive shaft clamped, splined end up, in a soft-jawed vise, install thrust plate on shaft with smooth, ported side up. Slide rotor over splines with counter bore of rotor facing down.
- Install rotor lock ring. Ensure ring is seated in groove. Install two dowel pins in holes in pump cavity. Carefully insert drive shaft, rotor, and thrust plate assembly in pump cavity, indexing location holes with dowel pins.NOTE: Always use a new full diameter locking ring.
- Slide cam ring over rotor and onto dowel pins, with arrow on ring facing toward rear of housing. Install vanes in rotor slots with radius edge facing out towards cam ring inner surface. Position pressure plate on dowel pins with circular spring depression toward rear of housing.
- Place a 1 1/4" socket in groove of pressure plate, and seat entire assembly on "O" ring in pump cavity by pressing down on socket with both thumbs. Place spring in groove in pressure plate and position end cover lip edge up over spring.
- Press end cover down below retaining ring groove with thumb or arbor press. Install retaining ring. Ensure ring is seated in groove. Care should be taken to prevent cocking end cover in bore or distorting assembly.
- Using a punch, tap retaining ring ends around in groove until opening is opposite flow control valve bore. This is necessary for maximum retention of retaining ring.
- Install new reservoir "O" ring, mounting stud "O" rings, and flow control valve "O" ring on pump body, then carefully position reservoir on pump body. Align mounting stud holes until studs can be started in threads.
- Using a soft-faced hammer, tap reservoir down on pump and install flow control valve spring and valve assembly slotted end up. Install new "O" ring seal on pressure hose fitting. Ensure ring is installed on UPPER groove.CAUTION: It is possible to install pressure hose "O" ring in lower groove. This will restrict relief outlet orifice.
- Install pressure hose fitting and tighten mounting studs. Tighten hose fitting and rear mounting studs. Remove pump assembly from vise and install mounting bracket and drive pulley.