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Home >> Lexus >> 2006 >> IS 250 RWD, Standard >> Repair and Diagnosis >> Suspension >> Wheel Alignment >> Suspension >> Rear Shock Absorber >> Installation

Rear Shock Absorber: Installation

  1. INSTALL REAR SHOCK ABSORBER 
    1. Install the front lower coil spring insulator to the front shock absorber so that both recessed parts are aligned.
      Fig 1: Identifying Recessed Parts
      G04047410Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using SST, compress the rear coil spring.

      SST 09727-30021 (09727-00010, 09727-00021, 09727-00031) 

      NOTE: Do not use an impact wrench. It will damage the SST.
      Fig 2: Compressing Coil Spring
      G04113006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the rear lower coil spring insulator and fit the rear coil spring end into the recessed part of the rear lower shock absorber seat.
    4. Install the rear No. 1 spring bumper.
    5. Install the rear upper coil spring insulator, rear No. 1 shock absorber cushion and rear No. 2 shock absorber cushion, and collar to the rear suspension support assembly.
      NOTE: Make sure that the rear No. 1 shock absorber cushion and rear No. 2 shock absorber cushion are installed in the correct direction.
      Fig 3: Installing Rear Lower Coil Spring Insulator
      G04047412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Install the rear suspension support assembly and rear No. 1 shock absorber cushion washer.
      NOTE: Make sure that the rear No. 1 shock absorber cushion washer is installed with the recessed part facing upward.
    7. Temporarily tighten the shock absorber shaft nut.
      Fig 4: Tightening Shock Absorber Shaft Nut
      G04047413Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Adjust the rear suspension support assembly to the installation position of the lower part of the rear shock absorber so that the studs are positioned as shown in Fig 5 .
      NOTE: Make sure that the left coil spring end faces toward the front of the vehicle and the right coil spring end faces toward the rear.
    9. Release the SST and remove it from the rear coil spring.
      NOTE:
      • Do not use an impact wrench. It will damage the SST.
      • Remove the SST after confirming the position of the rear suspension support assembly.
    Fig 5: Inspecting Installation Position Of Lower Part Of Rear Shock Absorber
    G04047414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL REAR SHOCK ABSORBER WITH COIL SPRING 
    1. Temporarily install the rear shock absorber with coil spring with the 2 bolts.
      Fig 6: Installing Rear Shock Absorber With Coil Spring
      G04047415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the 3 nuts on the upper side of the rear shock absorber with coil spring.

      Torque: 74 N*m (755 kgf*cm, 55 ft.*lbf) 

      Fig 7: Installing Nuts On Upper Side Of Rear Shock Absorber With Coil Spring
      G04047416Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Tighten the 2 bolts.

    Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf) 

    Fig 8: Tightening Bolts
    G04047417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. TEMPORARILY TIGHTEN REAR NO. 2 SUSPENSION ARM 
    1. Temporarily install the rear No. 2 suspension arm with the bolt and nut.
    2. Temporarily install the rear shock absorber with rear coil spring with the bolt and nut.
    3. Temporarily install the rear stabilizer link assembly and the height control sensor link bracket to the rear No. 2 suspension arm with the bolt and nut.

    HINT:

    Fully tighten the nut after stabilizing the suspension.

    Fig 9: Installing Rear No. 2 Suspension Arm
    G04047418Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. STABILIZE SUSPENSION 
    1. Install the rear wheels.
    2. Lower the vehicle to the ground. Bounce the vehicle up and down at the corners to stabilize the rear suspension.
    3. Remove the rear wheels.
    4. Jack up the axle carrier, with a wooden block placed between the jack and axle carrier, to apply a load to the suspension so that the rear drive shaft assembly becomes level.
    Fig 10: Inspecting Suspension
    G04047442Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. FULLY TIGHTEN REAR NO. 2 SUSPENSION ARM 
    1. Fully tighten the bolt and nut on the rear No. 2 suspension arm assembly LH.

      Torque: Bolt A 

      161 N*m (1,640 kgf*cm, 118 ft.*lbf) 

      Bolt B 

      110 N*m (1,120 kgf*cm, 80 ft.*lbf) 

      Nut C 

      27 N*m (275 kgf*cm, 20 ft.*lbf) 

    2. Using a ball joint lock nut wrench (19 mm), fully tighten nut D.

    SST 09022-12170 

    Torque: 140 N*m (1,426 kgf*cm, 103 ft.*lbf) 

    When using a ball joint lock nut wrench 102 N*m (1,040 kgf*cm, 75 ft.*lbf) 

    Fig 11: Tightening Bolt & Nut On Rear No. 2 Suspension Arm Assembly LH
    G04047420Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL REAR SUSPENSION MEMBER BRACE 
    1. Install the rear suspension member brace with the 2 bolts.

    Torque: 50 N*m (510 kgf*cm, 37 ft.*lbf) 

    Fig 12: Installing Rear Suspension Member Brace
    G04047421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSTALL NO. 2 DIFFERENTIAL SUPPORT PROTECTOR 
    1. Install the No. 2 differential support protector with the 2 nuts.
  8. INSTALL REAR WHEEL HOUSE LINER LH 
  9. INSTALL REAR WHEEL 

    Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf) 

  10. INSTALL SIDE LUGGAGE COMPARTMENT TRIM COVER RH 
  11. INSTALL SIDE LUGGAGE COMPARTMENT TRIM COVER LH 
  12. INSTALL FRONT LUGGAGE COMPARTMENT TRIM COVER 
  13. INSTALL REAR LUGGAGE COMPARTMENT TRIM COVER 
  14. INSTALL DECK SIDE TRIM BOX RH 
  15. INSTALL DECK SIDE TRIM BOX LH 
  16. INSTALL NO. 2 LUGGAGE COMPARTMENT TRIM COVER 
  17. INSPECT AND ADJUST REAR WHEEL ALIGNMENT (See  ADJUSTMENT   ) 
  18. VEHICLE PREPARATION FOR HEADLIGHT AIM ADJUSTMENT (See  ADJUSTMENT  ) 
  19. REMOVE PREPARATION FOR HEADLIGHT AIMING (Using a tester) (See  ADJUSTMENT  ) 
  20. PREPARATION FOR HEADLIGHT AIMING (Using a screen) (See  ADJUSTMENT  ) 
  21. INSPECT HEADLIGHT AIMING (See Step 4 in  ADJUSTMENT  ) 
  22. ADJUST HEADLIGHT AIMING (See Step 5 in  ADJUSTMENT  ) 
Fig 13: Installing No. 2 Differential Support Protector
G04047422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002