Power Steering Vane Pump: Disassembly

NOTE: Never remove the mounting bolts (partly resin coated) of the power steering ECU and motor. (The power steering ECU and motor should not be disassembled.)

REMOVE RESERVOIR CAP
REMOVE RESERVOIR
1. Loosen the clamp and remove the reservoir.
2. Remove the O-ring from the power steering vane pump housing.
Fig 1: Identifying Power Steering ECU And Motor Mounting Bolts
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE REAR HOUSING AND OIL STRAINER
1. Remove the 4 bolts, rear housing and oil strainer.
2. Remove the O-ring from the power steering vane pump housing.
REMOVE CAM RING, VANE PLATES, VANE PUMP ROTOR AND LOWER SIDE PLATE
1. Remove the cam ring, vane pump rotor and 10 vane plates.
2. Remove the lower side plate.
NOTE: Take care not to drop the vane plate.

REMOVE FLOW CONTROL VALVE SPRING SEAT AND FLOW CONTROL VALVE

Using snap ring pliers, remove the snap ring.

Using a service bolt, pull it out together with the spring seat.

Recommended service bolt:

RECOMMENDED SERVICE BOLT - SPECIFICATION TABLE

Thread diameter	6 mm
Thread pitch	1.0 mm

Remove the O-ring from the spring seat.
Remove the flow control valve and spring.

Fig 2: Pulling Out Snap Ring Using A Service Bolt
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

REMOVE UPPER SIDE PLATE
1. Using a plastic-faced hammer, tap out of the side plate and wave washer.
2. Remove the O-ring from the side plate.
Fig 3: Removing Side Plate And Wave Washer Using A Plastic-Faced Hammer
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002