49. Oil Pump Clean and Inspect

Oil Pump Cleaning and Inspection





1. Caution: Refer to Safety Glasses Caution in Service Precautions.

Clean the oil pump components in cleaning solvent.
2. Dry the components with compressed air.
3. Inspect the gears (427, 428) for the following:
^ Scoring
^ Chipping
^ Galling
^ Excessive wear

4. Inspect the oil pump housing (422) for the following:
^ 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 spring.
6. Inspect the pressure relief valve for scoring or wear. The valve should move freely within the bore of the housing.