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Reassembly [08/2014 - ]

NOTE:
  • When using a vise, do not overtighten it.
  • Do not drop the power steering motor assembly, strike it with tools or subject it to impacts.
  • If the power steering motor assembly is subjected to an impact, replace it with a new one.
  • Do not pull the wire harness of the power steering motor assembly.
  • Do not allow any moisture to come into contact with the power steering motor assembly.
  • Do not loosen any bolts not mentioned in the procedure.
  1. INSTALL POWER STEERING MOTOR ASSEMBLY (for Brush Type Motor) 
    1. Apply grease to the serrated part of the electric power steering column sub-assembly.
      Fig 1: Identifying Serrated Part Of Electric Power Steering Column
      GTY324462Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      First wipe off the existing grease from the serrated part, and then apply the dedicated grease supplied with a new power steering motor assembly or electric power steering column sub-assembly.

    2. Temporarily install the power steering motor assembly to the electric power steering column sub-assembly with the 2 bolts.
      Fig 2: Identifying Power Steering Motor Bolts
      GTY341248Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      When temporarily installing the 2 bolts to the power steering motor assembly, do not tighten them all the way down.

    3. Secure the steering column assembly in a vice using aluminum plates, wooden block and a piece of cloth.
      Fig 3: Securing Steering Column Assembly In Vice
      GTY341247Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not overtighten the vice, as the steering column assembly may become deformed.
      • Secure the steering column assembly so that power steering motor assembly is directly upright.
      • Support the steering column assembly with a wooden block or similar item to ensure that it does not fall.
    4. Using SST, turn the steering main shaft once 180 degrees to the left and then 180 degrees to the right at a speed of 60 RPM, and repeat 2 to 3 times to adjust the axis centering of the power steering motor assembly.
      Fig 4: Turning Steering Main Shaft
      GTY337585Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09616-00011 
    5. Remove the steering column assembly from the vice.
    6. Tighten the 2 bolts.

      Torque: 19 N*m (189 kgf*cm, 14 ft.*lbf) 

    7. Secure the steering column assembly in a vice using aluminum plates, wooden block and a piece of cloth.
      Fig 5: Securing Steering Column Assembly In Vice
      GTY341247Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not overtighten the vice, as the steering column assembly may become deformed.
      • Support the steering column assembly with a wooden block or similar item to ensure that it does not fall.
    8. Measure the turning torque of the steering main shaft using SST.
      Fig 6: Measuring Turning Torque Of Steering Main Shaft
      GTY340082Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09616-00011 

      Turning torque 

      Torque: 1.1 N*m (11 kgf*cm, 10 in.*lbf) 

      or less

      NOTE:

      Ensure that there is no abnormal resistance during rotation.

      If the torque is not as specified, readjust the axis centering of the power steering motor assembly.

    9. Install 2 new clamps and tape to the wire harness as shown in the illustration.
      Fig 7: Installing Clamps And Tape To Wire Harness
      GTY332392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 225 to 245 mm (8.86 to 9.64 in.)
      *2 115 to 135 mm (4.53 to 5.31 in.)
      *3 260 mm (10.2 in.)
      *4 80 to 100 mm (3.15 to 3.93 in.)
      *5 340 to 360 mm (13.4 to 14.1 in.)
      *6 10 to 30 mm (0.394 to 1.18 in.)
      *7 19 mm (0.75 in.)
      *8 45° or less
      NOTE:
      • Secure the wire harness to the power steering motor assembly within the range indicated by *8
      • Wrap the tape more than 2 times.
      • As heat from the power steering motor assembly may generate smoke, use heat resistant tape (resistant to 100°C (212°F) or more).
  2. INSTALL POWER STEERING MOTOR ASSEMBLY (for Brushless Type Motor) 
    1. Install a new electric power steering motor shaft damper to the electric power steering column sub-assembly.
      Fig 8: Identifying Electric Power Steering Motor Shaft Damper
      GTY333436Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install a new electric power steering motor shaft spacer to the electric power steering column sub-assembly.
      Fig 9: Identifying Electric Power Steering Motor Shaft Spacer
      GTY333753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Temporarily install the power steering motor assembly to the electric power steering column sub-assembly with the 2 bolts.
      Fig 10: Identifying Power Steering Motor Bolts
      GTY342669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      When temporarily installing the 2 bolts to the power steering motor assembly, do not tighten them all the way down.

    4. Secure the steering column assembly in a vice using aluminum plates and a piece of cloth.
      Fig 11: Securing Steering Column Assembly In Vice
      GTY342671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not overtighten the vice, as the steering column assembly may become deformed.
      • Secure the power steering motor assembly so that it is directly upright.
      • Support the steering column assembly with a wooden block or similar item to ensure that it does not fall.
    5. Using SST, turn the steering main shaft once 180 degrees to the left and then 180 degrees to the right at a speed of 60 RPM, and repeat 2 to 3 times to adjust the axis centering of the power steering motor assembly.
      Fig 12: Turning Steering Main Shaft
      GTY341841Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09616-00011 
    6. Remove the steering column assembly from the vice.
    7. Tighten the 2 bolts.
      Fig 13: Identifying Power Steering Motor Bolts
      GTY342672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 19 N*m (189 kgf*cm, 14 ft.*lbf) 

    8. Secure the steering column assembly in a vice using aluminum plates and a piece of cloth.
      Fig 14: Securing Steering Column Assembly In Vice
      GTY342671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not overtighten the vice, as the steering column assembly may become deformed.
      • Support the steering column assembly with a wooden block or similar item to ensure that it does not fall.
    9. Measure the turning torque of the steering main shaft using SST.
      Fig 15: Measuring Turning Torque Of Steering Main Shaft
      GTY334108Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09616-00011 

      Turning torque 

      Torque: 0.9 to 1.5 N*m (10 to 15 kgf*cm, 8 to 12 in.*lbf) 

      NOTE:

      Ensure that there is no abnormal resistance during rotation.

      If the torque is not as specified, readjust the axis centering of the power steering motor assembly.

    10. Engage the claw to install the torque sensor harness connector.
      Fig 16: Engaging Claw To Install Torque Sensor Harness Connector
      GTY341738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    11. Install 2 new clamps and tape to the wire harness as shown in the illustration.
      Fig 17: Installing Clamps And Tape To Wire Harness
      GTY338496Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 175 to 195 mm (6.89 to 7.67 in.)
      *2 230 to 250 mm (9.06 to 9.84 in.)
      *3 220 to 240 mm (8.67 to 9.44 in.)
      *4 Wrap the Tape In This Area
      *5 19 mm (0.75 in.)
      *6 59°
      *7 65°
      NOTE:
      • Secure the wire harness to the power steering motor assembly within the range indicated by *6
      • Wrap the tape more than 2 times.
      • As heat from the power steering motor assembly may generate smoke, use heat resistant tape (resistant to 100°C (212°F) or more).
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