Inspection And Repair Of Power Steering Pump

1. INSPECT OIL CLEARANCE BETWEEN ROTOR SHAFT AND BUSHING

Using a micrometer and calipers, measure the oil clearance.

(0.0004 - 0.0012 In.) Maximum clearance: 0.07 mm (0.0028 in.)

If the clearance is greater than maximum, replace the entire PS pump.

2. INSPECT ROTOR AND VANE PLATES

(a) Using a micrometer, measure the height, thickness and length of the vane plates.

Minimum height: 8.1 mm (0.319 in.) Minimum thickness: 1.797 mm (0.0707 in.) Minimum length: 14.988 mm (0.5901 in.)

(b) Using a feeler gauge, measure the clearance between the rotor groove and vane plate. Maximum clearance: 0.03 mm (0.0012 in.)

If the clearance is greater than maximum, replace the vane plate and/or rotor with one stamped with the same mark of the cam ring.

HINT: There are five vane plate lengths with the following rotor and cam ring marks:

Inscribed Mark

Rotor and cam ring mark

Vane plate length mm (in.)

None

14.996 - 14 998 (0 5904 - 0 5905)

1

14 994 - 14.996 <0.5903 - 0 5904)

2

14 992 - 14 994 (0.5902 - 0.5903)

3

14 990 - 14.992 (0.59016 - 0 59024)

4

14 988 - 14 990 <0.5901 - 0.5902»

Power Steering Control Valve

3. INSPECT FLOW CONTROL VALVE

(a) Coat fluid to the valve and check that it falls smoothly into the valve hole by its own weight.

(b) Check the flow control valve for leakage.

Close one of the holes and apply compressed air [4 - 5 kg/cm2 (57-71 psi. 392 - 490 kPa)| into the opposite side, and confirm that air does not come out of the end hole.

Latch Claw Clutch
Inscribed Mark

S«15IO

If necessary, replace the valve with one having the same letter as on the front housing. Inscribed mark: A, B, C, D, E or F

S«15IO

Power Steering Flow Control Valve

4. INSPECT FLOW CONTROL VALVE SPRING

Using a scale, measure the free length of the spring.

If the free length is not within specification, replace the Spring.

Power Steering Pump Leaking Gasket Supra

5. IF NECESSARY, REPLACE OIL SEAL

(a) Using a screwdriver, pry out the snap ring.

(b) Using a screwdriver, pry out the oil seal.

(c) Using a 22 mm socket wrench, press in a now oil seal.

(d) Coat the oil seal lip with MP grease.

Supra Power Steering Pump Seal
SA1S12
Aircharge Disel

(e) Using a screwdriver, install the snap ring.

1kz Power Steering Pump Overhaul

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  • filibert
    How to change the oil seal in a toyota supra power steering pump?
    8 years ago

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