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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 Shock Absorber >> Installation [10/2017 - 10/2020] >> Procedure

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

  1. INSTALL REAR SHOCK ABSORBER ASSEMBLY LH 
    1. Install the rear lower coil spring insulator LH to the rear shock absorber assembly LH.
      GTY783616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Depression
    2. Secure SST in a vise.
      GTY828460Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09727-30022 
    3. Attach the hooks of each SST arm across the diameter of the coil spring.
      WARNING:
      • GTY830377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Rear Coil Spring Diameter

        Do not perform the work without checking to make sure that the claws of the hooks are securely engaged.

      • It could cause the hook to slip off and the spring to fly out, which could result in an injury.
      • GTY596483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Do not install SST to the rear coil spring unless its top and bottom hook distance is set to the widest condition.

      • It could cause the hook to slip off and the spring to fly out, which could result in an injury.
      • GTY613077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Do not install SST when the distances between the SST arms or the number of coils of the coil spring between the hooks are not the same.

      • It could cause the hook to slip off and the spring to fly out, which could result in an injury.
    4. Install the stopper pins to the hooks of SST.
      WARNING:
      • Do not perform the work if the stopper pin is not securely installed.
      • It could cause the hook to slip off and the spring to fly out, which could result in an injury.
      GTY551008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Using SST, compress the coil spring.
      WARNING:
      • GTY596481Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        While compressing the spring, if the front coil spring starts to bend into a bow shape, do not continue the work.

      • It could cause the hook to slip off and the spring to fly out, which could result in an injury.
      • GTY596494Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Do not compress the springs so far that the coils of the springs touch each other.

      • It could cause the hook to slip off and the spring to fly out, which could result in an injury.
      • GTY596492Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Do not use an impact wrench.

      • The threads may be stripped, or the sudden compression may result in slack that causes the hooks to slip off, causing the spring to fly out and possibly resulting in injury.
      • GTY613915Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        If a stopper pin touches the coil spring while using SST, remove the stopper pin and continue with the procedure.

      • If a stopper pin is removed, install SST as shown in the illustration.
      • If a hook disengages from the coil spring, the coil spring may fly out, resulting in injury.
      • SST: 09727-00110 
    6. Install the rear coil spring LH to the rear shock absorber assembly LH.
      NOTE:

      Make sure that the end of the rear coil spring is positioned in the depression of the rear lower coil spring insulator LH.

      GTY834770Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Depression
    7. Install the rear No. 1 spring bumper LH to the rear support assembly suspension LH.
    8. Install the rear upper coil spring insulator LH to the rear support assembly suspension LH as shown in the illustration.
      GTY833935Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Install the rear support assembly suspension LH to the rear shock absorber assembly LH.
      NOTE:

      Match the shape of the rear shock absorber assembly support ring end to the shape of the rear support assembly suspension LH.

      GTY805553Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Turn the rear support assembly suspension LH 120° or more to engage the end of the rear upper coil spring insulator LH to the rear shock absorber assembly LH claws.
      NOTE:
      • Make sure that the end of the rear upper coil spring insulator LH is engaged securely to the 3 rear shock absorber assembly LH claws.
      • Be careful not to deform the bellows of the rear upper coil spring insulator LH.
      • Keep the rear upper coil spring insulator LH free of oil and grease.
      GTY822306Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear Shock Absorber Assembly LH Claw
      *b End of Rear Upper Coil Spring Insulator LH
    11. Temporarily tighten a new lock nut.
    12. Adjust the rear support assembly suspension LH so that the bolts come to the positions as shown in the illustration, and remove SST from the rear coil spring.
      GTY804386Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A for LH Side
      *B for RH Side
      *a Rear Shock Absorber Assembly LH Bushing Large-diameter Side
      *b Rear Shock Absorber Assembly LH Bushing Small-diameter Side
      *c Front Suspension Support Assembly LH Stud Bolt
      *d 0°+/-2°
      Front of the Vehicle
      Outside of the Vehicle
      NOTE:
      • Do not use an impact wrench. It will damage SST.
      • Make sure that the width across flat on the rear shock absorber piston rod end is located parallel to the rear shock absorber bushing.
      • Make sure of the direction of the rear suspension support assembly when removing SST.
  2. TEMPORARILY TIGHTEN REAR SHOCK ABSORBER WITH COIL SPRING 
    1. Temporarily tighten the washer and rear shock absorber with coil spring with a new nut.
      GTY833937Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Temporarily tighten the rear suspension spring support reinforcement and rear shock absorber with coil spring with the 3 nuts.
      GTY805899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      If the nut is hard to see, use a mirror.

  3. CONNECT SKID CONTROL SENSOR WIRE LH 
    1. Install the skid control sensor wire LH with the nut.

      Torque: 6.0 N.m (61 kgf/cm, 53 in.lbf) 

      GTY805573Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the connector.
  4. TEMPORARILY TIGHTEN REAR STABILIZER LINK ASSEMBLY LH 
    1. Temporarily tighten the rear stabilizer link assembly LH to the rear stabilizer bar with the nut.
      GTY805568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Temporarily tighten the rear stabilizer link assembly LH to the rear No. 2 suspension arm assembly LH with the bolt and nut.
      GTY805574Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. STABILIZE SUSPENSION 

    See step  5

  6. TIGHTEN REAR SHOCK ABSORBER WITH COIL SPRING 
    1. Fully tighten the nut.

      Torque: 110 N.m (1122 kgf/cm, 81 ft.lbf) 

      GTY833937Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Fully tighten the 2 nuts A.

      Torque: 40 N.m (408 kgf/cm, 30 ft.lbf) 

      GTY800729Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Torque Wrench Fulcrum Length

      HINT: 

      If the nut is hard to see, use a mirror.

    3. Using SST, fully tighten the nut B.
      • SST: 09249-37010 

      Specified tightening torque 

      Torque: 40 N.m (408 kgf/cm, 30 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 SST (fulcrum length of 100 mm (3.937 in.)) + torque wrench (fulcrum length of 180 mm (7.087 in.)): 25.7 N.m (262 kgf/cm, 19 ft.lbf)
      • If the nut is hard to see, use a mirror.
    4. Fully tighten the lock nut.

      Torque: 27.5 N.m (280 kgf/cm, 20 ft.lbf) 

      NOTE:

      Perform this step only when the rear shock absorber with coil spring has been disassembled.

  7. INSTALL REAR SHOCK ABSORBER CAP LH 
    1. Install the rear shock absorber cap LH.
      GTY805902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. TIGHTEN REAR STABILIZER LINK ASSEMBLY LH 
    1. Fully tighten the nut.

      HINT: 

      If the ball joint turns together with the nut, use a 6 mm hexagon wrench to hold the stud bolt.

      Torque: 89 N.m (908 kgf/cm, 66 ft.lbf) 

      GTY805568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Fully tighten the nut.

      Torque: 24 N.m (245 kgf/cm, 18 ft.lbf) 

      GTY805574Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. INSTALL REAR WHEEL HOUSE LINER LH 

    HINT: 

    Use the same procedure for the RH and LH sides.

    Refer to PROCEDURE - Step 4

  10. INSTALL ROCKER PANEL MOULDING PROTECTOR LH 

    Refer to PROCEDURE - Step 1

  11. INSTALL REAR WHEEL 

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

  12. INSTALL PACKAGE TRAY TRIM SIDE COVER LH 

    Refer to PROCEDURE - Step 22

  13. INSTALL NO. 1 CENTER SPEAKER GRILLE SUB-ASSEMEBLY 

    Refer to PROCEDURE - Step 3

  14. INSTALL PACKAGE TRAY TRIM GARNISH LH 

    Refer to PROCEDURE - Step 24

  15. INSTALL PACKAGE TRAY TRIM GARNISH RH 

    HINT: 

    Use the same procedure described for the LH side.

  16. INSPECT AND ADJUST REAR WHEEL ALIGNMENT 

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

  17. PERFORM INITIALIZATION 

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

  18. ADJUST HEADLIGHT AIMING 

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