Disassembly and Assembly
DISASSEMBLYNOTICE: When using a vise, do not overtighten it.
1. MEASURE PS VANE PUMP ROTATING TORQUE
a. Check that the pump rotates smoothly without abnormal noise.
b. Using a torque wrench, check the pump rotating torque.
Rotating torque: 0.3 Nm (2.8 kgf-cm, 2.4 inch lbs.) or less
2. REMOVE VANE PUMP PULLEY
Using SST, to stop the pulley rotating, remove the nut.
SST 09960 - 10010 (09962 - 01000, 09963 - 01000)
3. REMOVE FRONT AND REAR BRACKETS
Remove the 3 bolts and 2 nuts.
4. REMOVE SUCTION PORT UNION
a. Remove the bolt.
b. Remove the 0-ring from the union.
5. REMOVE PRESSURE PORT UNION, FLOW CONTROL VALVE AND SPRING
Remove the 0-ring from the union.
6. REMOVE REAR HOUSING
a. Remove the 4 bolts.
b. Remove the 2 0-rings from the housing.
7. REMOVE WAVE WASHER
8. REMOVE SIDE PLATE
9. REMOVE GASKET
10. REMOVE CAM RING, 10 VANE PLATES AND VANE PUMP ROTOR
Using a screwdriver, remove the snap ring from the vane pump shaft.
NOTICE: Take care not to drop the plate.
11. REMOVE VANE PUMP SHAFT
12. REMOVE STRAIGHT PINS
Remove the 2 pins from the front housing.
INSPECTION
NOTICE: When using a vise, do not overtighten it.
1. CHECK OIL CLEARANCE BETWEEN VANE PUMP SHAFT AND BUSHING
Using a micrometer and caliper gauge, measure the oil clearance.
Standard clearance: 0.03 - 0.05 mm (0.0012 - 0.0020 inch)
Maximum clearance: 0.07 mm (0.0028 inch)
If it is more than the maximum, replace the front housing and vane pump shaft.
2. INSPECT VANE PUMP ROTOR AND VANE PLATES
a. Using a micrometer, measure the height, thickness and length of the plates.
Minimum height: 8.6 mm (0.339 inch)
Minimum thickness: 1.397 mm (0.0550 inch)
Minimum length: 14.991 mm (0.5902 inch)
b. Using a feeler gauge, measure the clearance between the rotor groove and plate.
Maximum clearance: 0.035 mm (0.0014 inch)
If it is more than the maximum, replace the plate and/or rotor with one having the same mark stamped on the cam ring.
Inscribed mark: 1, 2, 3, 4, or None
HINT: There are 5 vane lengths with the following rotor and cam ring marks:
3. INSPECT FLOW CONTROL VALVE
a. Coat the valve with power steering fluid and check that it falls smoothly into the valve hole by its own weight.
b. Check the valve for leakage. Close one of the holes and apply 392-490 kPa (4-5 kgf/cm2, 57-71 psi) of compressed air into the opposite side, and confirm that air does not come out from the end holes.
If necessary, replace the valve with one having the same letter as inscribed on the front housing.
Inscribed mark: A, B, C, D, E, or F
4. INSPECT SPRING
Using a calipers, measure the free length of the spring.
Minimum free length: 32.3 mm (1.272 inch)
If it is not within the specification, replace the spring.
5. IF NECESSARY, REPLACE OIL SEAL
a. Using a screwdriver with vinyl tape wound around its tip, remove the oil seal.
NOTICE: Be careful not to damage the front housing.
b. Coat a new oil seal lip with power steering fluid.
c. Using SST, press in the oil seal.
SST 09950 - 60010 (09951 - 00330), 09950 - 70010 (09951 - 07100)
NOTICE: Make sure to install the oil seal facing the correct direction.
REASSEMBLY
NOTICE: When using a vise, do not overtighten it.
1. COAT WITH POWER STEERING FLUID
2. INSTALL VANE PUMP SHAFT
3. INSTALL STRAIGHT PINS
Using a plastic hammer, tap in 2 new pins.
NOTICE: Be careful not to damage the pins.
4. INSTALL CAM RING
Align the holes of the ring and 2 straight pins, and install the ring with the inscribed mark facing outward.
5. INSTALL VANE PUMP ROTOR
a. Install the rotor with the inscribed mark facing outward.
b. Install a new snap ring to the vane pump shaft.
6. INSTALL VANE PLATES Install the 10 plates with the round end facing outward.
7. INSTALL GASKET Install a new gasket.
8. INSTALL SIDE PLATE Align the holes of the plate and 2 straight pins.
9. INSTALL WAVE WASHER Install the washer so that its protrusions fit into the slots in the side plate.
10. INSTALL REAR HOUSING
a. Coat 2 new 0-rings with power steering fluid and install them to the housing.
b. Torque the 4 bolts.
Torque: 24 Nm (240 kgf-cm, 17 ft. lbs.)
11. INSTALL SPRING, FLOW CONTROL VALVE AND PRESSURE PORT UNION
a. Install the valve facing the correct direction.
b. Coat a new 0-ring with power steering fluid and install it to the union.
c. Torque the union.
Torque: 83 Nm (850 kgf-cm, 62 ft. lbs.)
12. INSTALL SUCTION PORT UNION
a. Coat a new 0-ring with power steering fluid and install it to the union.
b. Torque the bolt.
Torque: 13 Nm (130 kgf-cm, 9 ft. lbs.)
13. INSTALL FRONT AND REAR BRACKETS Torque the 3 bolts and 2 nuts.
Torque: 43 Nm (440 kgf-cm, 32 ft. lbs.)
14. INSTALL VANE PUMP PULLEY
Using SST to stop the pulley rotating, torque the nut.
SST 09960 - 10010 (09962 - 01000, 09963 - 01000)
Torque: 43 Nm (440 kgf-cm, 32 ft. lbs.)
15. MEASURE PS VANE PUMP ROTATING TORQUE