48. Oil Pump Cleaning and Inspection

Oil Pump Cleaning and Inspection





Caution: Refer to Safety Glasses Caution .
1. Clean the oil pump components in cleaning solvent.
2. Dry the components with compressed air.
3. Inspect the oil pump for the following conditions:

* Scoring on the top of the gears (1)
* Damaged gears (2) for the following:

- Chipping
- Galling
- Wear

* Scoring, damage or casting imperfections to the body (3)
* Damaged or scored gear shaft (4)
* Damaged or scored gear shaft (5)
* Damaged bolt hole threads
* Worn oil pump driveshaft bore
* Damaged or sticking oil pump pressure relief valve
Minor imperfections may be removed with a fine oil stone.
* Collapsed or broken oil pump pressure relief valve spring

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