Inspection

INSPECTION

NOTICE: When using a vise, do not overtighten it.





1. CHECK OIL CLEARANCE BETWEEN VANE PUMP SHAFT AND BUSHING
Using a micrometer and caliper gauge, measure the oil clearance.
Standard clearance: 0.03 - 0.05 mm (0.0012 - 0.0020 inch)
Maximum clearance: 0.07 mm (0.0028 inch)
If it is more than the maximum, replace the vane pump shaft and front housing.
2. INSPECT VANE PUMP ROTOR AND VANE PLATES





a. Using a micrometer, measure the height, thickness and length of the 10 vane plates.
Minimum height: 8.6 mm (0.339 inch)
Minimum thickness: 1.40 mm (0.0551 inch)
Minimum length: 14.99 mm (0.5902 inch)





b. Using a feeler gauge, measure the clearance between the vane pump rotor groove and vane plate.
Maximum clearance: 0.033 mm (0.0013 inch)





If it is more than the maximum, replace the vane plate and/or vane pump rotor with one having the same mark stamped on the cam ring.
Inscribed mark: 1, 2, 3, 4 or None





HINT: There are 5 vane plate lengths with the following rotor and cam ring marks:

3. INSPECT FLOW CONTROL VALVE





a. Coat the flow control valve with power steering fluid and check that it falls smoothly into the valve hole by its own weight.





b. Check the flow control valve for leakage.
Close one of the holes and apply compressed air 392 - 490 kPa (4 - 5 kgf/cm2, 57 - 71 psi) into the opposite side, and confirm that air does not come out from the end holes.





If necessary, replace the flow control valve with one having the same letter as inscribed on the front housing.
Inscribed mark: A, B, C, D, E or F





4. INSPECT SPRING
Using vernier calipers, measure the free length of the spring.
Minimum free length: 33.2 mm (1.307 inch)
If it is not within the specification, replace the spring.