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Power Steering Vane Pump: Reassembly

CAUTION: When using a vise, do not overtighten it.
  1. Coat parts indicated by arrows with power steering fluid. See POWER STEERING VANE PUMP .
  2. Install vane pump shaft with vane pump pulley.
  3. Install side plate.
    1. Coat 2 new O-rings with power steering fluid, and install them to the side plate.
    2. Align the dent of the side plate with the dent of the front housing, and install the side plate.
      Fig 1: Aligning Dents Of Side Plate & Front Housing
      G01148628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Make sure that the side plate is installed facing in the correct direction.
  4. Install cam ring.
    1. Align the dent of the cam ring with the dent of the side plate, and install the cam ring with the inscribed mark facing outward.
      Fig 2: Aligning Dents Of Cam Ring & Side Plate
      G01148629Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Install vane pump rotor.
    1. Install the vane pump rotor with the inscribed mark facing outward.
      Fig 3: Installing Vane Pump Rotor & Vane Plates
      G01148630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install a new snap ring to the vane pump shaft.
  6. Install 10 vane plates.
    1. Install the 10 vane plates with the round end facing outward.
  7. Install rear housing.
    1. Coat a new O-ring with power steering fluid, and install it to the rear housing.
    2. Align the straight pin of the rear housing with the dents of the cam ring, side plate and front housing, and install the rear housing with the 4 bolts.
      1. Torque: 22 N.m (220 kgf.cm, 16 ft.lbf)
  8. Install spring, flow control valve and pressure port union.
    1. Install the spring.
    2. Install the flow control valve facing in the correct direction. See Figure.
    3. Coat a new O-ring with power steering fluid, and install it to the pressure port union.
    4. Install the pressure port union.
      1. Torque: 69 N.m (700 kgf.cm, 51 ft.lbf)
  9. Install suction port union.
    1. Coat a new O-ring with power steering fluid, and install it to the suction port union.
    2. Install the suction port union with the bolt.
      1. Torque: 12 N.m (120 kgf.cm, 9 ft.lbf)
  10. Install pump bracket.
    1. Install the pump bracket with the 3 bolts.

      Torque: 30 N.m (310 kgf.cm, 22 ft.lbf)

  11. Measure PS vane pump rotating torque. See step  1 under DISASSEMBLY.
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