Oil Pump Overhaul

Disassembly





1. Remove oil seal using a screwdriver covered by a rag to protect sealing surface from pump cover side.





2. Remove seven screws and remove pump cover.
3. Remove outer rotor and inner rotor.

Inspection
1. Check the following and replace any faulty parts.
- Distorted or damaged oil pump body or cover.
- Worn or damaged plunger
- Weak or broken plunger spring.





2. Measure side clearance.
Clearance: 0.0035 inch (0.09 mm) Max.





3. Measure tooth tip clearance.
Clearance: 0.007 inch (0.18 mm) Max.





4. Measure outer rotor to pump body clearance.
Clearance: 0.015 inch (0.376 mm) Max.

Reassembly





1. Assemble outer rotor and inner rotor into oil pump body.
2. Apply thread locking compound to cover mounting screw threads.





3. Assemble oil pump cover to oil pump body.
Tightening torque: 52 - 78 inch lbs. (6 - 9 Nm, 60 - 90 kg-cm)
4. Apply engine oil to outside of new oil seal and oil pump body.





5. Press oil seal into oil pump body.

Caution: Oil seal must be pressed in until it is protruding with front face of oil pump body.

Protrusion: 0.02 - 0.04 inch (0.5 - 1.0 mm)