Vane Pump: Disassembly

NOTE: When using a vise, do not overtighten it.

MEASURE VANE PUMP ROTATING TORQUE
1. Check that the pump rotates smoothly without abnormal noise.
2. Using a torque wrench, check the pump rotation torque.
  Torque: Rotation torque
  
  0.25 N*m (2.5 kgf*cm, 2.2 in.*lbf) or less
  
  Fig 1: Checking Vane Pump Rotating Torque
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE VANE PUMP PULLEY
1. Using SST to stop the pulley from rotating, remove the pulley set nut.
  SST 09960-10010 (09962-01000, 09963-01000)
  
  Fig 2: Removing Vane Pump Pulley With SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE AIR CONTROL VALVE ASSEMBLY
1. Remove the air control valve.
2. If necessary, replace the union seat.
  1. Using a screw extractor, remove the union seat.
    
    Fig 3: Removing Air Control Valve
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Using an extension bar and hammer, tap in a new union seat.
    NOTE: Before installing the union seat, remove foreign matter sticking to the vane pump housing.
REMOVE POWER STEERING SUCTION PORT UNION
1. Remove the 2 bolts and power steering suction port union.
2. Using a small screwdriver, remove the O-ring from the power steering suction port union.
  
  Fig 4: Tapping Union Seat
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NOTE: Be careful not to damage the suction port union.
REMOVE POWER STEERING SOLENOID VALVE ASSEMBLY
1. Using SST, remove the power steering solenoid valve.
  SST 09922-10010
  
  NOTE: Rotate SST in the direction shown in the illustration.
2. Using snap ring pliers, remove the snap ring from the vane pump housing front.
  
  Fig 5: Removing Power Steering Solenoid Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Temporarily install a bolt to the flow control spring seat and pull it out together with the flow control spring seat.
  HINT:
  
  Use a bolt with a diameter of 6 mm (0.24 in.) and pitch of 1.0 mm (0.039 in.).
4. Remove the O-ring from the flow control spring seat.
  
  Fig 6: Identifying Spring Seat
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE VANE PUMP SHAFT
1. Using snap ring pliers, remove the snap ring from the vane pump housing.
2. Temporarily install an appropriate plate washer and the pulley set nut to the vane pump shaft.
3. Using SST, pull out the vane pump shaft.
  SST 09910-00015 (09911-00011, 09912-00010)
4. Using snap ring pliers, remove the snap ring from the vane pump shaft.
  
  Fig 7: Pulling Vane Pump Shaft With SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE VANE PUMP REAR BRACKET
1. Remove the 4 bolts and vane pump bracket.
2. Remove the O-ring from the vane pump bracket.
3. Remove the wave washer.
4. Using an extension bar and press, press out the vane pump side plate front, vane pump cam ring, vane pump rotor, vane pump plates and vane pump side plate rear as an assembly.
5. Using pliers, remove the long cam ring straight pin from the vane pump housing front.
6. Remove the O-ring from the vane pump side plate rear.
  NOTE: Take care not to drop the vane plate.
  
  Fig 8: Pressing Vane Pump Side Plate Front With Extension Bar
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Remove the vane pump rotor and the 10 vane pump plates from the vane pump cam ring.
8. Remove the 10 vane pump plates from the vane pump rotor.
9. Remove the short cam ring straight pin from the vane pump side plate front.
10. Remove the 2 O-rings from the vane pump side plate front.
REMOVE VANE PUMP HOUSING OIL SEAL
1. Using SST, tap out the oil seal.
  SST 09631-10030
  
  NOTE: Be careful not to damage the vane pump housing front.
  
  Fig 9: Tapping Oil Seal With SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002