Overhaul

DISASSEMBLY





1. Remove the shaft and retainer.





2. If necessary, remove the oil pump screen.
^ The oil pump screen has a press fit in to the pump cover.
^ Do not remove the screen from the pipe. The pipe and screen are serviced as a complete assembly.





3. Remove the cover bolts.





4. Remove the pump cover.





5. Remove the drive gear and the driven gear. Matchmark the gear teeth for assembly.





6. Remove the following items:
^ The retaining pin
^ The pressure regulator spring
^ The pressure regulator valve

ASSEMBLY
^ Tools Required
- J 21882 0il Suction Pipe Installer, or equivalent

NOTE: Replace the pressure relief valve spring when you reuse the oil pump.

1. Install the following items:
^ The pressure regulator valve
^ The pressure regulator spring
^ The retaining pin
2. Coat the drive gear, the driven gear and the housing gear surfaces with clean engine oil.
3. Install the drive gear and the driven gear into the pump body. Align the matchmarks on the gears. Install the smooth side of the gear toward the pump cover.
4. Install the pump cover.
5. Install the cover bolts.
^ Tighten the bolts to 9 Nm (80 inch lbs.).
6. Inspect the pump for smoothness of operation by turning the oil pump driveshaft by hand.





7. Install the oil pump screen.
a. If removed, replace the oil pump screen. The oil pump screen must have a good press fit into the oil pump body.
b. Mount the oil pump in a soft jawed vise.
c. Apply sealer to the end of the pipe.
d. Use the J 21882 and a soft-faced hammer in order to tap the oil pump screen into the pump body. The screen must align parallel with the bottom of the oil pan when it is installed.
8. Install the shaft and the retainer.