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Vane Pump: Reassembly

NOTE:
  • Do not overtighten when using a vise.
  • When installing, coat the parts indicated by arrows with power steering fluid (see VANE PUMP  ).
  1. INSTALL VANE PUMP HOUSING OIL SEAL 
    1. Coat a new oil seal lip with power steering fluid.
    2. Using SST and a press, press in the oil seal.

      SST 09950-60010 (09951-00280), 09950-70010 (09951-07100) 

      NOTE: Make sure that the oil seal is installed in the correct direction as shown in the illustration.
      Fig 1: Installing Vane Pump Housing Oil Seal
      G05540550Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL SHAFT SUB-ASSEMBLY WITH PULLEY 
    1. Coat the bush surface of the front housing with power steering fluid.
    2. Gradually insert the shaft with shaft from the pulley side.
      NOTE: Do not damage the oil seal lip in the front housing.
      Fig 2: Installing Shaft Sub-Assembly With Pulley
      G05540551Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL FRONT VANE PUMP SIDE PLATE 
    1. Coat a new O-ring with power steering fluid and install it into the front housing.
      Fig 3: Locating O-Ring
      G05540542Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Coat a new O-ring with power steering fluid and install it onto the front side plate.
      Fig 4: Identifying O-Ring And Front Side Plate
      G05540541Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Align the dent of the front side plate with that of the front housing, and install the front side plate.
      NOTE: Make sure that the front side plate is installed in the correct direction as shown in the illustration.
      Fig 5: Aligning Dent Of Front Side Plate With Front Housing
      G05540554Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL VANE PUMP CAM RING 
    1. Align the dent of the cam ring with that of the front side plate, and install the cam ring with the inscribed mark facing upward.
      NOTE: Make sure that the cam ring is installed in the correct direction.
      Fig 6: Aligning Dent Of Cam Ring With Front Side Plate
      G05540555Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL VANE PUMP ROTOR 
    1. Coat the vane pump rotor with power steering fluid.
    2. Install the vane pump rotor.
      NOTE: Vane pump rotor has no specific direction.
      Fig 7: Identifying Vane Pump Rotor
      G05540556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Coat all 10 vane pump plates with power steering fluid.
    4. Install the vane pump plates with the round end facing outward.
      Fig 8: Installing Vane Pump Plates
      G05540557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL VANE PUMP SHAFT SNAP RING 
    1. Using a screwdriver and snap ring expander, install a new snap ring to the shaft.
      Fig 9: Installing Vane Pump Shaft Snap Ring To Shaft
      G04978700Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSTALL REAR VANE PUMP HOUSING 
    1. Coat a new O-ring with power steering fluid and install it onto the rear housing.
    2. Align the straight pin of the rear housing with the dents of the cam ring, front side plate and the front housing, and install the rear housing with the 4 bolts.

      Torque: 22 N*m (224 kgf*cm, 16 ft.*lbf) 

      Fig 10: Aligning Rear Housing Straight Pin With Cam Ring, Front Side Plate And Front Housing Dents
      G05540559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSPECT PRELOAD 
    1. Check that the pump rotates smoothly without abnormal noise.
    2. Temporarily install the service bolt.

      Recommended service bolt: 

      Thread diameter: 

      10 mm (0.39 in.) 

      Thread pitch: 

      1.25 mm (0.0492 in.) 

      Bolt length: 

      50 mm (1.97 in.) 

      Fig 11: Inspecting Preload
      G05540560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a torque wrench, check the pulley rotating torque.

      Standard rotating torque: 

      0.27 N*m (2.8 kgf*cm, 2.4 ft.*lbf) or less 

      If rotating torque is not as specified, check the installation condition of each part.

  9. INSTALL POWER STEERING OIL PRESSURE SWITCH 
    1. Install the oil pressure switch onto the vane pump assembly.

      Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf) 

  10. INSTALL FLOW CONTROL VALVE 
    1. Coat the compression spring and flow control valve with power steering fluid.
    2. Install the compression spring and flow control valve.
    3. Coat a new O-ring with power steering fluid and install it onto the pressure port union.
    4. Install the pressure port union.

      Torque: 69 N*m (704 kgf*cm, 51 ft.*lbf) 

      Fig 12: Identifying Pressure Port Union, O-Ring, Flow Control Valve And Compression Spring
      G05540538Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. INSTALL REAR VANE PUMP BRACKET 
    1. Install the rear vane pump bracket with the bolt.

      Torque: 37 N*m (377 kgf*cm, 27 ft.*lbf) 

      HINT:

      Make sure that the stopper of the bracket touches the vane pump body, and then torque the bolt.

  12. INSTALL POWER STEERING 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.

      Torque: 12 N*m (122 kgf*cm, 9 ft.*lbf) 

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