Power Steering Vane Pump: Disassembly

Fig 1: Measuring Rotating Torque

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1. Check that the pump rotates smoothly without abnormal noise.
2. Using a torque wrench, check the pump rotating torque.
   1. Rotating torque: 
   2. 0.27 N.m (2.8 kgf.cm, 2.4 in..lbf) or less 

1. Remove the bolt and suction port union.
2. Remove the O-ring from the suction port union.

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

If the oil pressure switch is dropped or strongly damaged, replace it with a new one.

1. Remove the 4 bolts and rear housing.
2. Remove the O-ring from the rear housing.

1. Remove the cam ring and 10 vane plates.
   NOTE: Take care not to drop the vane plate.
2. Using a screwdriver, remove the snap ring, vane pump rotor and side plate.
3. Remove the 2 O-rings from the side plate.