Engine Oil Pump Overhaul
  1. Check the housing-to-outer rotor radial clearance between the outer rotor (A) and pump housing (B). If the housing-to-outer rotor radial clearance exceeds the service limit, replace the oil pump.
    Housing-to-Outer Rotor Radial Clearance
    Standard (New):
    0.15−0.21 mm (0.006−0.008 in.)
    Service Limit:
    0.23 mm (0.009 in.)

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