Power Steering Pump: Inspection
- Check flow control valve, rotor and ring, end plates and pump shaft for damage, scoring or excessive wear. Inspect pump housing for cracks or signs of visual damage. Check "O" ring seats for scratches or burrs.
- Inspect pump shaft bushing, in pump housing. If bushing is damaged, replace pump housing. Replace any parts necessary. If any internal pump parts are found to be damaged, flush steering gear or disassemble and clean gear.NOTE: Lubricate "O" rings and all internal pump components with ATF Dexron II fluid before reassembly.
- Measure clearance between shaft and pump body. If clearance is more than 0.0035" (0.09 mm), replace pump body as an assembly. Inspect pump shaft oil seal lip and bushing end for damage.
- Inspect groove of rotor vane and cam surface for stepped wear. Check vane for damage. Check ring and rotor sides for grooving. Replace entire assembly if any damage is seen.
- Inspect side plate spring. Minimum length should be 0.67" (17 mm). Check flow control spring. Minimum length should be 1.95" (49.5 mm). Check sliding surfaces of control valve for obstructions.NOTE: Lubricate "O" rings and all internal pump components with ATF Dexron II before reassembly.
- Install cam ring. Smaller diameter bore faces side plate. Install cover and oil reservoir bracket to pump body and tighten. Remove reservoir bolt and install reservoir. Tighten suction plate.
Maximum service limit is 0.0035" (0.09 mm).