Overhaul

Engine Oil Pump Overhaul

View

1. Oil Pump Exploded View

Exploded View





Disassembly

NOTE: Refer to the Exploded View if needed during procedure.

1. Engine Oil Pump Cover





1. Remove the pump cover.

2. Engine Oil Pump - Inspection

1. Check the inner rotor-to-outer rotor radial clearance between the inner rotor (A) and the outer rotor (B). If the inner rotor-to-outer rotor radial clearance exceeds the service limit, replace the oil pump.












2. Check the pump housing-to-rotor axial clearance between the rotors (A) and the pump housing (B). If the pump housing-to-rotor axial clearance exceeds the service limit, replace the oil pump.












3. Check the pump housing-to-outer rotor radial clearance between the outer rotor (A) and the pump housing (B). If the pump housing-to-outer rotor radial clearance exceeds the service limit, replace the oil pump.











4. Inspect both rotors and the pump housing for scoring or other damage. Replace parts, if necessary.

Reassembly

NOTE: Refer to the Exploded View if needed during procedure.

1. Engine Oil Pump Cover





1. Apply liquid thread lock to the pump housing screws, then install the oil pump cover.

2. Check that the oil pump turns freely.