Corolla LE Sedan L4-1762cc 1.8L DOHC MFI (1998)
1. Measure 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 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 height: 8.6 mm (0.339 inch)
Minimum thickness: 1.397 mm (0.05500 inch)
Minimum length: 14.991 mm (0.59016 inch)
b. Using a feeler gauge, measure the clearance between the rotor groove and plate.
Maximum clearance: 0.03 mm (0.0012 inch)
If it is more than the maximum, replace the plate and/or rotor with the one having the same mark stamped on the cam ring.
Inscribed mark: 1, 2, 3, 4 or None
