Overhaul

DISASSEMBLY

Disassembly Service Points
[A] Pulley Removal





Use the special tool to secure the pulley, and then remove the pulley mounting nuts.

[B] Snap Ring Removal





Remove the snap ring from the shaft with snap ring pliers and separate the rotor from the shaft.

REASSEMBLY

Reassembly Service Points





]A[ Oil Seal Installation

]B[ O-Rings Installation








Apply specified fluid on 0-rings to install.

Specified fluid: Automatic Transmission Fluid "DEXRON II"

]C[ Rotor Installation





Install the rotor to the shaft so that the rotor's punch mark is at the pump cover side.

]D[ Snap Ring Installation





1. Install the snap ring with the snap ring plier.





2. After installation of snap ring, lift the rotor and check that the snap ring has entered the countersunk part.

]E[ Cam Ring Installation





Install the cam ring with the punch mark facing the pump cover.

]F[ Vane Installation





Install the vanes on the rotor, paying close attention to the installation direction.

]G[ Wave Washer Installation





Fit tabs of the wave washer in concavities of the side plate to install the wave washer.

]H[ Side Plate Installation





Line up the dowel pin hole of the side plate with the dowel pin of the oil pump body.

]I[ Pump Housing Gasket Installation





Fit protrusions of the pump housing gasket in concavities of the oil pump body to install the pump housing gasket.

]J[ Pulley Installation





Use the special tool to secure the pulley, and then install the pulley lock nut.

INSPECTION
- Check the flow control valve for clogging.
- Check the shaft for wear or damage.
- Check the rotor and vane groove for "stepped" wear.
- Check the contact surface of cam ring and vanes for "stepped" wear.
- Check the vanes for damage.

Clearance Between Shaft And Oil Pump Body





Use a caliper gauge and a micrometer to measure the dimensions A and B. Subtract value of B from value of A to calculate the clearance between shaft and oil pump body.

Limit (A)-(B): 0.07 mm (0.0276 inch)