Corolla Wagon L4-107.5 1762cc 1.8L DOHC (7A-FE) (1993)
Power Steering Pump: Service and Repair
Disassembly and Assembly
Fig. 26 Exploded View Of Power Steering Pump.
Disassemble
1. Position power steering pump in suitable soft-jawed vise.
2. Using suitable tool, remove pump pulley.
3. Remove air control valve, Fig. 26.
4. Remove reservoir tank, bracket and O-ring.
5. Remove pressure port union and O-ring, then remove flow control valve and spring.
6. Remove rear housing snap ring, then using suitable plastic hammer, tap out rear housing, wave washer and O-ring.
7. Using suitable plastic hammer, tap out shaft end, rear side plate and O-ring.
8. Remove pump shaft, cam ring and vane plates.
9. Using suitable screwdriver, remove pump shaft snap ring, remove rotor and front plate from pump shaft.
10. Remove front plate O-rings, then using suitable pin punch and hammer, drive out straight pin.
Inspection
1. Using suitable micrometer and calipers, measure oil clearance between shaft and bushing, .0028 inch or less should be indicated, if not replace
entire power steering pump.
2. Using suitable micrometer, measure height, thickness and length of vane plates. Minimum height should be .339 inch, thickness, .055 inch and
length
.5902 inch.