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Home >> Lexus >> 2018 >> LS 500h RWD >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Suspension System (Rear) - Service Information (1 Of 2) >> Rear Upper Arm >> Installation [10/2017 - 10/2020] >> Procedure

Installation [10/2017 - 10/2020]: Procedure

  1. TEMPORARILY TIGHTEN REAR UPPER CONTROL ARM ASSEMBLY LH 
    1. Insert the bolt from the front of the vehicle. Then temporarily tighten the rear upper control arm assembly LH with the nut and washer.
      GTY791058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut
    2. Temporarily tighten the rear upper control arm assembly LH to the rear axle carrier sub-assembly LH with a new nut.
      GTY807759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL REAR SHOCK ABSORBER WITH COIL SPRING LH (w/o Air Suspension) 

    Refer to INSTALLATION [10/2017 - 10/2020] 

  3. INSTALL REAR PNEUMATIC CYLINDER WITH SHOCK ABSORBER ASSEMBLY LH (w/ Air Suspension) 

    Refer to INSTALLATION [10/2017 - 10/2020] 

  4. TEMPORARILY TIGHTEN REAR NO. 1 SUSPENSION ARM ASSEMBLY LH 
    1. Insert the bolt from the back of the vehicle. Then temporarily tighten the rear No. 1 suspension arm assembly LH with the nut and washer.
      GTY822579Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut
    2. Temporarily tighten the rear No. 1 suspension arm assembly LH to the rear axle carrier sub-assembly LH with a new nut.
      GTY834342Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. STABILIZE SUSPENSION 
    1. Install the rear wheel.
    2. Lower the vehicle and bounce it up and down several times to stabilize the rear suspension.
    3. Remove the rear wheel.
    4. Jack up the axle carrier with a wooden block between the jack and axle carrier. Apply a load to the rear suspension so that the rear No. 2 suspension arm assembly LH becomes level.
      GTY834419Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:
      • Do not raise the jack up too high.
      • The vehicle could fall, resulting in a serious accident.
      GTY613081Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • When jacking up the rear No. 2 suspension arm assembly LH, be sure to jack it up slowly.
      • Make sure to perform this operation with the vehicle kept as low as possible.
  6. FULLY TIGHTEN REAR UPPER CONTROL ARM ASSEMBLY LH 
    1. Using a ball joint lock nut wrench, fully tighten the rear upper control arm assembly LH with the nut.

      Specified tightening torque 

      Torque: 133 N.m (1356 kgf/cm, 98 ft.lbf) 

      NOTE:

      Because the nut has its own stopper, do not turn the nut. Tighten the bolt with the nut secured.

      HINT: 

      • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.

        Refer to PRECAUTION [10/2017 - 09/2019] , or refer to PRECAUTION [09/2019 - 10/2020]

      • When using a ball joint lock nut wrench (fulcrum length of 150 mm (5.906 in.)) + torque wrench (fulcrum length of 400 mm (15.748 in.)): 96.7 N.m (986 kgf/cm, 71 ft.lbf)
      GTY804517Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Torque Wrench Fulcrum Length
    2. Fully tighten the nut.

      Torque: 160 N.m (1632 kgf/cm, 1416 in.lbf) 

      GTY807759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. FULLY TIGHTEN REAR NO. 1 SUSPENSION ARM ASSEMBLY LH 
    1. Using a ball joint lock nut wrench, fully tighten the rear upper control arm assembly LH with the nut.

      Specified tightening torque 

      Torque: 204 N.m (2080 kgf/cm, 150 ft.lbf) 

      HINT: 

      • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.

        Refer to PRECAUTION [10/2017 - 09/2019] , or refer to PRECAUTION [09/2019 - 10/2020]

      • When using a ball joint lock nut wrench (fulcrum length of 149.75 mm (5.896 in.)) + torque wrench (fulcrum length of 600 mm (23.622 in.)): 163.3 N.m (1665 kgf/cm, 120 ft.lbf)
      GTY811969Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Torque Wrench Fulcrum Length
    2. Using a ball joint lock nut wrench, fully tighten the nut.

      Specified tightening torque 

      Torque: 160 N.m (1632 kgf/cm, 118 ft.lbf) 

      HINT: 

      • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.

        Refer to PRECAUTION [10/2017 - 09/2019] , or refer to PRECAUTION [09/2019 - 10/2020]

      • When using a ball joint lock nut wrench (fulcrum length of 150 mm (5.906 in.)) + torque wrench (fulcrum length of 400 mm (15.748 in.)): 116.4 N.m (1187 kgf/cm, 86 ft.lbf)
      GTY820055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Torque Wrench Fulcrum Length
  8. INSTALL REAR WHEEL 

    Refer to INSTALLATION [10/2017 - 10/2023]

  9. INSPECT AND ADJUST REAR WHEEL ALIGNMENT 

    Refer to ADJUSTMENT [10/2017 - 10/2020]

  10. INSPECT AND ADJUST VEHICLE HEIGHT (w/ Air Suspension) 

    Refer to ADJUSTMENT [10/2017 - 10/2020]

  11. PERFORM INITIALIZATION 

    Refer to INITIALIZATION [10/2017 - 09/2018] , or refer to INITIALIZATION [09/2018 - 10/2020]

  12. ADJUST HEADLIGHT AIMING 

    Refer to ADJUSTMENT [10/2017 - 10/2020]