Oil Pump Clean and Inspect

1. Clean the oil pump components in solvent.

CAUTION: Wear safety glasses in order to avoid eye damage.

2. Dry the components with compressed air.
3. Inspect the oil pump for the following:
- Scoring, damage or casting imperfections to the housing (3)
- Damage gears (chipping, galling, or wear) (2)
- Scoring on the top of the gears (1)
- Damaged or scored gear shaft (5)
- Damaged bolt threads
- Worn driveshaft housing bore
- Damaged or sticking pressure relief valve (minor imperfections may be removed with a fine oil stone).
- Collapsed or broken pressure relief valve spring

4. If the oil pump is to be reused, install a NEW pressure relief valve spring.
5. During oil pump installation, install a NEW oil pump driveshaft retainer.