47. Oil Pump Cleaning and Inspection

Oil Pump Cleaning and Inspection





1. Clean the oil pump components in cleaning solvent.

2. Caution: Refer to Safety Glasses Caution.

Dry the components with compressed air.
3. Inspect the gears (427, 428) for the following conditions:
^ Scoring
^ Chipping
^ Galling
^ Excessive wear
4. Inspect the oil pump housing (422) for the following conditions:
^ Damaged bolt hole threads
^ Worn oil pump driveshaft bore
^ Scoring or excessive wear within the housing
^ Worn driven gear shaft





5. Inspect for a collapsed pressure relief valve spring.
6. Inspect the pressure relief valve for scoring or wear. The valve should move freely within the bore of the housing.