Corolla Sedan 4-Door L4-1587cc 1.6L DOHC MFI (1997)
Power Steering Pump: Service and Repair
Inspection and Replacement
CAUTION: When using a vise, do not overtighten it.
PROCEDURE
1. Measure oil clearance between vane pump shaft and bushing.
NOTE:
^
Using a micrometer and a caliper gauge, measure the oil clearance.
Clearance:
-
Standard: 0.03 - 0.05 mm (0.0012 - 0.0020 inch).
-
Maximum: 0.07 mm (0.0028 inch).
^
If it is more than maximum, replace the front housing and vane pump shaft.
2. Inspect vane pump rotor and vane plates.
a. Using a micrometer, measure the height, thickness and length of the 10 plates.
Minimum Dimensions:
-
Height: 8.6 mm (0.339 inch).
-
Thickness: 1.397 mm (0.0550 inch).
-
Length: 14.991 mm (0.5902 inch).
