Oil Pump: Service and Repair

OIL PUMP SERVICE





^ Always replace with new oil seal and gasket.
^ When removing oil pump, turn crankshaft so that No. 1 piston is at TDC on its compression stroke.



^ When installing oil pump, apply engine oil to gears, then align punchmark on drive spindle and oil hole on oil pump.

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.
^ Replace regulator valve set or oil pump assembly, if damaged.


OIL PUMP INSPECTION





Using a feeler gauge, check the following clearances.





^ If the tip clearance (1) exceeds the limit, replace gear set.





^ If body to gear clearances (2, 3) exceed the limit, replace oil pump assembly.