Oil Pump: Inspection
- Clean all parts in solvent and dry thoroughly with compressed air. Be sure that all dirt or metal particles are removed from pressure relief valve chamber.
- Check inside of pump housing, outer race and rotor for excessive wear or damage. Check mating surface of pump cover for wear. If pump cover mating surface is excessively worn, scored or grooved, replace pump assembly.
- Measure rotor tip clearance. If rotor tip clearance exceeds specification, pump assembly must be replaced. See checking inner rotor end play in. See Fig 1 below.