Remove the pressure relief plug-(1),spring-(2), and plunger-(3).
Remove the oil pump gerotor cover-(1) andbolts.Clean all of the parts in cleaning solvent. Remove varnish,sludge and dirt.Inspect the oil pump-(2, 3) for wear and scoring.Ensure that all components are within specifications. Refer toEngine Mechanical Specifications.
Replace the front cover-(4) and oil pump assemblyif it is out of specification or damaged.
Air Conditioning Compressor Oil Balancing Compressor
Draining ProcedureNote:Drain and measure as much of the refrigerant oil as possiblefrom the removed compressor.Remove the compressor crankcase oil drain plug and drain thecrankcase into a clean, graduated container.Drain the oil from both the suction and discharge ports ofthe removed compressor-(1) ...