Oil Pump: Service and Repair

DISASSEMBLY

NOTE: The internal parts of the oil pump assembly are not serviced separately (excluding the spring). If the oil pump components are worn or damaged, replace the oil pump as an assembly.





1. Remove the oil pump cover bolts.





2. Remove the oil pump cover.

NOTE: Mark or identify the gears for assembly.





3. Remove the drive gear.





4. Remove the driven gear.





5. Remove the regulator valve plug.





6. Remove the regulator valve spring.





7. Remove the regulator valve.
8. Inspect the oil pump components.

ASSEMBLY

NOTE: Prior to assembling the oil pump, coat all wear or internal surfaces with clean engine oil. Install the beveled edge of the driven gear away from the cover. Note the gear orientation marks and install the gears in the proper direction.





1. Install the driven gear into the pump housing.

NOTE: Note the gear orientation marks and install the gears in the proper direction.





2. Install the drive gear into the pump housing.





3. Install the oil pump cover.





4. Install the pump cover bolts. Tighten the oil pump cover bolts to 12 Nm (106 inch lbs.).





5. Install the regulator valve.





6. Install a new regulator valve spring.





7. Install the regulator valve plug. Tighten the regulator valve plug to 12 Nm (106 inch lbs.).
8. Inspect the oil pump for smoothness of operation by rotating the drive gear.