Disassembly
- Remove 4 Torx screws securing cover plate to oil pump body. (Scheme 243) CAUTION: Do not allow cover to separate from pump body.
- Invert oil pump.
- Carefully remove cover plate from oil pump body taking care to ensure that rotors are retained in pump body. (Scheme 244) NOTE: Cover plate is dowel located.
- Remove and discard cover plate sealing ring.
- Make suitable alignment marks between inner and outer rotors and pump body.
- Remove inner and outer rotors.
- Clean inner and outer rotors and rotor housing.
- Fit inner and outer rotors ensuring that reference marks are aligned.