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Vane Pump: Reassembly

WARNING: This page is about a different car, the 2006 Scion tC. However, it is still accessible from the selected car via links, so may be relevant.
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
      G04223391Courtesy 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
      G04223392Courtesy 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: Installing O-Ring To Front Housing
      G04223393Courtesy 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: Installing O-Ring To Front Side Plate
      G04223394Courtesy 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 That Of Front Housing
      G04223395Courtesy 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 That Of Front Side Plate
      G04223396Courtesy 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: Installing Vane Pump Rotor
      G04223397Courtesy 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
    G04223398Courtesy 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
    G04223399Courtesy 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
      G04223400Courtesy 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
      G04223401Courtesy 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.
      Fig 12: Installing Flow Control Valve
      G04223402Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  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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