Oil Pump

Oil Pump

REMOVAL
1) Remove the manual transmission assembly from the vehicle.
2) Prepare the transmission for overhaul.
3) Remove the extension case.
4) Remove the transfer driven gear.
5) Remove the center differential.
6) Remove the oil guide.





7) Remove the snap ring and flat washer.





8) Using an ST, remove the neutral set spring and support.
ST1 18756AA000 CLAW
ST2 399893600 PLIER





9) Lift the striking rod, and remove the spring pin.





10) Remove the selector arm No. 2 and the shifter arm.





11) Using the ST, remove the oil pump shaft assembly and plate.

NOTE: Using a general tool may cause damage. Remove the bolt using the ST.

ST 18663AA000 SOCKET





12) Using the ST, remove the oil pump cover assembly.

NOTE: Using a general tool may cause damage. Remove the bolt using the ST.

ST 18663AA000 SOCKET





13) Remove the thrust washer on the main shaft section.
14) Remove the oil pump rotor.





INSTALLATION
1) Apply oil to the outer rotor surface, and install to the transmission case.





2) Attach the thrust washer to the main shaft.
3) Using the ST, install the oil pump cover assembly.

Tightening torque:
25 Nm (2.5 kgf-m, 18.4 ft-lb)





ST 18663AA000 SOCKET
4) Using the ST, install the oil pump shaft assembly and plate.

Tightening torque:
25 Nm (2.5 kgf-m, 18.4 ft-lb)
ST 18663AA000 SOCKET





5) When replacing the oil pump cover assembly, select the appropriate transfer driven gear and thrust washer, and install to the extension case.
6) Install the selector arm No. 2 and the shifter arm.





7) Install the spring pin.

NOTE: Use new spring pins.

8) Using the ST, install the neutral set spring and support.
ST1 18756AA000 CLAW
ST2 399893600 PLIER





9) Install the flat washer and snap ring.
10) Install the oil guide.





11) Install the center differential.
12) Install the transfer driven gear.
13) Install the extension case.
14) Install the manual transmission assembly to the vehicle.

INSPECTION
1) Check that there is no damage on the inner rotor and outer rotor. If damaged, replace the oil pump rotor assembly.
2) Tip clearance
Install the inner rotor and outer rotor to the transmission case. match the forward tip of the inner rotor and outer rotor, and measure the clearance. If the clearance exceeds standards, replace the oil pump rotor assembly.





3) Side clearance
Measure from the transmission case to rotor. If the clearance exceeds specification, replace the inner rotor and outer rotor as a set.