Caution: Bodily injury may occur if the cleaning solvent is inhaled or exposed
to the skin.
- Use a suitable
solvent to clean the oil pump.
- Remove all old gasket material from the engine front cover and
from the engine block.
- Inspect the oil pump cover and the engine front cover for the
following damage:
| • | Porous or damaged casting |
- Inspect the pressure regulator valve for the following damage:
- Inspect the pressure regulator spring for loss of tension or bending.
Replace the pressure regulator spring if damaged.
- Inspect the oil pump gears for the following conditions:
- Measure the inner oil
pump gear tip clearance.
If the clearance for the inner oil pump gear tip is greater than 0.152 mm
(0.006 in) the oil pump must be replaced.
- Measure the outer oil
pump gear diameter clearance.
If the outer oil pump gear diameter clearance is greater than 0.381 mm
(0.015 in) the oil pump must be replaced.
- Measure the oil pump gear
end clearance.
- Measure the pressure regulator valve-to-bore clearance.
If the pressure regulator valve-to-bore clearance is greater than 0.076 mm
(0.003 in) the oil pump must be replaced.
