Disassembly and Assembly

Power Steering Vane Pump (1 Of 2):

Power Steering Vane Pump (2 Of 2):

DISASSEMBLY

NOTICE: When using a vise, do not over tighten it.





1. Measure power steering vane pump rotating torque.
a. Check that the pump rotates smoothly without abnormal noise.
b. Using a torque wrench, check the pump rotating torque.

Rotation torque: 0.3 Nm (2.4 inch lbs.) or less

2. Remove suction port union.
a. Remove the bolt.
b. Remove the O-ring from the union.





3. Remove vane pump drive gear.
a. Using soft. jaws on a vise, clamp the gear in the vise.

NOTICE: Be careful not to damage the gear.

b. Remove the gear set nut.





c. Using SST 09527-10011, press out the gear.

NOTICE:
^ Be careful not to damage the gear.
^ To avoid dropping the PS pump assembly, support the pump assembly with your hand.

d. Remove the woodruff key from the vane pump shaft.

4. Remove pressure port union, flow control valve and spring. Remove the O-ring from the union.





5. Remove rear housing and wave washer.
a. Using 2 screwdrivers, remove the snap ring.

NOTICE: Take care not to damage the housing.





b. Using a brass bar and hammer, tap the housing so that the spring force of the wave washer pushes the housing forward.





c. Gently tap the PS pump assembly on a wood block and remove the housing and washer.
d. Remove the O-ring from the housing.

6. Remove side rear plate.
a. Gently tap the PS pump assembly on a wood block and remove the plate.
b. Remove the O-ring from the plate.

7. Remove cam ring, vane pump rotor and 10 vane plates.

NOTICE: Be careful not to scratch the cam ring, rotor or vane plates.

8. Remove shorter straight pin. Remove the pin from the side front plate.





9. Remove vane pump shaft with bearing.
a. Using snap ring pliers, remove the snap ring.





b. Using an extension bar and hammer, tap out the shaft with the bearing.





10. Remove side front plate.
a. Using SST 09631-10030, tap out the plate from the front housing.

NOTICE: Be careful not to damage the front housing.

b. Remove the 2 O-rings from the plate.

11. Remove longer straight pin. Using pliers, remove the pin from the front housing.



ASSEMBLY

NOTICE: When using a vise, do not over tighten it.

1. Coat with power steering fluid.





2. Install vane pump shaft with bearing.
a. Using a 29 mm socket wrench, press in the shaft with the bearing to the front housing.

NOTICE: Be careful not to damage the oil seal lip.

b. Using snap ring pliers, install a new snap ring to the front housing.

3. Install longer straight pin. Install a new pin to the front housing.

NOTICE: Be careful not to damage the pin.

4. Install side front plate.
a. Coat 2 new O-rings with power steering fluid and install them to the plate.
b. Align the hole of the plate and longer straight pin.

NOTICE: Make sure to install the plate facing the correct direction.

5. Install shorter straight pin. Install a new pin to the side front plate.

NOTICE: Be careful not to damage the pin.





6. Install cam ring and vane pump rotor. Install the ring and rotor with the inscribed marks facing outward.





7. Install vane plates. Install the 10 plates with the round end facing outward.
8. Install side rear plate.
a. Coat a new O-ring with power steering fluid and install it to the plate.
b. Align the holes of the plate with the straight pins.





9. Install wave washer. Install the washer so that its protrusions fit into the slots in the side rear plate.
10. Install rear housing.
a. Coat a new O-ring with power steering fluid and install it to the housing.





b. Using a press, apply just enough pressure to compress the wave washer, and install a new snap ring to the front housing.

11. Install spring, flow control valve and pressure port union.
a. Install the valve facing the correct direction.
b. Coat a new O-ring with power steering fluid and install it to the union.
c. Torque the union.

Torque: 69 Nm (51 ft. lbs.)

12. Install vane pump drive gear.
a. Install the woodruff key and gear.





b. Using soft. jaws on a vise, clamp the gear in the vise.

NOTICE: Be careful not to damage the gear.

c. Torque the gear set nut.

Torque: 74 Nm (54 ft. lbs.)

13. Measure power steering pump rotating torque.
14. Install suction port union.
a. Coat a new O-ring with power steering fluid and install it to the union.
b. Torque the bolt.

Torque: 13 Nm (9 ft. lbs.)