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Power Steering Vane Pump: Disassembly

  1. FIX VANE PUMP ASSEMBLY 

    Using SST, hold the vane assembly in a vise.

    SST 09630-00014 (09631-00132)

    Fig 1: Holding Vane Assembly In Vise Using SST
    G03077065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. MEASURE PS VANE PUMP ROTATING TORQUE 
    1. Check that the pump rotates smoothly without abnormal noise.
    2. Temporarily install the bolt to the shaft.
    3. Using a torque wrench, check the pump rotating torque.

      Rotating torque: 0.3 N.m (2.8 kgf.cm, 2.4 in.lbf) or less 

    Fig 2: Measuring PS Vane Pump Rotating Torque
    G03077066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE SUCTION PORT UNION 
    1. Remove the bolt.
    2. Remove the O-ring from the union.
  4. REMOVE PRESSURE PORT UNION, FLOW CONTROL VALVE AND SPRING 

    Remove the O-ring from the union.

  5. REMOVE REAR HOUSING 
    1. Loosen the 4 bolts.
    2. Remove the vane pump assembly from the SST.
    3. Remove the 4 bolts and rear housing.
    4. Remove the gasket from the housing.
  6. REMOVE CAM RING, 10 VANE PLATES AND VANE PUMP ROTOR 

    Using a screwdriver, remove the snap ring from the vane pump shaft.

    NOTE: Be careful not to drop the plate.
    Fig 3: Removing Snap Ring From Vane Pump Shaft Using Screwdriver
    G03077067Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE SIDE PLATE 
  8. REMOVE VANE PUMP SHAFT WITH PUMP PULLEY 
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