Supra Sport Roof L6-2997cc 3.0L DOHC MFI (1998)
a. Using a plastic hammer, tap the rear housing on the shaded area until the plate and washer come off.
b. Remove the two O-rings from the rear housing.
INSPECTION
NOTICE: When using a vise, do not overtighten it.
1. Measure oil clearance between vane pump shaft and bushing.
Using a micrometer and a caliper gauge, measure the oil clearance.
Oil 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 ten vane plates.
Minimums:
Height: 8.6 mm (0.339 inch).
Thickness: 1.40 mm (0.0551 inch).
Length: 14.99 mm (0.5902 inch).
b. Using a feeler gauge, measure the clearance between the rotor groove and plate.
Maximum clearance: 0.035 mm (0.0014 inch).
If it is more than the maximum, replace the plate and/or rotor with one having the same mark stamped on the cam ring.
