Oil Pump: Service and Repair

REMOVAL





1. Remove front cover.
2. Remove oil pump cover.
- Always replace oil seals and gaskets with new ones.
- When installing oil pump, apply engine oil to inner and outer gears.

REGULATOR VALVE INSPECTION
1. Visually inspect components for wear and damage.
2. Check oil pressure regulator valve sliding surface and valve spring.





3. Coat regulator valve with engine oil.
Check that it falls smoothly into the valve hole by its own weight.
If damaged, replace regulator valve set or oil pump assembly.

OIL PRESSURE RELIEF VALVE INSPECTION





Inspect oil pressure relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove valve by prying it out with a suitable tool.
Install a new valve in place by tapping it.

OIL PUMP INSPECTION





Using a feeler gauge, check the following clearances:





- If the tip clearance (2) exceeds the limit, replace gear set.
- If body to gear clearances (1), (3), (4), (5) exceed the limit, replace front cover assembly.