Oil Pump: Service and Repair

Oil Pump Replacement:

REPLACE

On these engines, the oil pump is contained within the front cover, Fig. 12. To replace oil pump, remove front cover as described under FRONT COVER.

REPAIR

Referring to Fig. 12, disassemble pump. To remove oil pressure relief valve, insert a self-threading sheet metal screw of the proper diameter into oil pressure relief valve chamber cap and pull cap out of chamber. Remove spring and plunger.
The inner rotor, shaft and outer race are serviced as an assembly. One part should not be replaced without replacing the other.