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Home >> Lexus >> 2005 >> GX 470 >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control System >> Front Stabilizer (KDSS) >> Overhaul

Front Stabilizer (KDSS): Overhaul

  1. REMOVE RADIATOR SUPPORT SEAL UPPER (SEE  REPLACEMENT  ) 
  2. REMOVE BATTERY 
  3. REMOVE STEP SUB-ASSY LH (SEE  REPLACEMENT  ) 
  4. DRAIN SUSPENSION FLUID 
    1. Loosen the bleeder plug on the stabilizer control w/ accumulator housing assy and drain suspension fluid.

      HINT:

      • Drain suspension fluid when performing the operations related to the hydraulic circuits.
      • Draining suspension fluid decreases suspension fluid pressure.
    2. Tighten the bleeder plug.

      Torque: 9.5 N.m (97 kgf.cm, 84 in.lbf) 

      Fig 1: Draining Suspension Fluid
      G02962934Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE SPARE DISC WHEEL 
  6. SEPARATE STABILIZER BAR REAR 
    1. Using a socket hexagon wrench (8 mm), remove the 4 bolts and 2 rear stabilizer brackets lower and separate the stabilizer bar rear.

      HINT:

      Separate the stabilizer bar rear so that the air in the rear stabilizer control cylinder can be bled out easily when bleeding the hydraulic circuits.

      Fig 2: Separating Stabilizer Bar Rear
      G02962935Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE ENGINE UNDER COVER SUB-ASSY NO. 1 
  8. REMOVE STABILIZER BAR FRONT 
    1. Remove the 4 bolts and 2 front stabilizer brackets with the wheels on the ground.
      Fig 3: Removing Front Stabilizer Brackets Bolts
      G02962936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a socket hexagon wrench (10 mm), remove the 4 bolts, 2 front stabilizer lower brackets and stabilizer bar front.
    3. Remove the 2 front stabilizer link bushes and front stabilizer lower bracket bushes from the stabilizer bar front.
      Fig 4: Removing Front Stabilizer Lower Brackets & Stabilizer Bar Front
      G02962937Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE FRONT DISC WHEEL 
  10. SEPARATE FRONT STABILIZER CONTROL TUBE NO. 1 
    1. Remove the 7 clips and front apron seal LH.
      Fig 5: Removing Front Apron Seal LH
      G02962938Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove bolt (A) and tube clamp bracket No. 3.
      Fig 6: Removing Tube Clamp Bracket No. 3
      G02962939Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove bolt (B) and separate the return tube sub-assy.
    4. Using SST, separate the front stabilizer control tube No. 1 from the front stabilizer w/ tube cylinder assy.

      SST 09023-12701

      Fig 7: Separating Front Stabilizer Control Tube No. 1
      G02962940Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the bolt.
  11. REMOVE FRONT STABILIZER W/TUBE CYLINDER ASSY 
    1. Remove the bolt, nut and front stabilizer w/ tube cylinder assy.
      Fig 8: Removing Front Stabilizer With Tube Cylinder Assy
      G02962941Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Turn the bolt while holding the nut.
      • Do not loosen or remove flare nuts (A) and (B) shown in Fig 9.
      • Do not remove or hold the front stabilizer w/ tube cylinder assy by the cylinder boot.
      Fig 9: Do Not Remove Flare Nuts
      G02962942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 bleeder plug caps and bleeder plugs from the front stabilizer w/ tube cylinder assy.
  12. REMOVE FRONT STABILIZER LINK ASSY 
    1. Remove the bolt, spacer and front stabilizer link assy.
      Fig 10: Removing Front Stabilizer Link Assy
      G02962943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. TEMPORARILY TIGHTEN FRONT STABILIZER LINK ASSY 
    1. Install the front stabilizer link assy with the spacer by temporarily tightening the bolt. Ensure that the identification mark on the front stabilizer link assy faces inward and to the front of the vehicle.
      Fig 11: Tightening Front Stabilizer Link Assy Temporarily
      G02962944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. TEMPORARILY TIGHTEN FRONT STABILIZER W/TUBE CYLINDER ASSY 
    1. Install the 2 bleeder plugs and bleeder plug caps to the front stabilizer cylinder w/ tube cylinder assy.

      Torque: 9.5 N.m (97 kgf.cm, 84 in.lbf) 

    2. Install the front stabilizer w/ tube cylinder assy by temporarily tightening the nut and bolt.
      NOTE:
      • Turn the bolt while holding the nut.
      • Do not hold or install the front stabilizer w/ tube cylinder assy by the cylinder boot.

      HINT:

      Pass the tube side of the front stabilizer w/ tube cylinder assy under the return tube sub-assy before installing.

      Fig 12: Installing Front Stabilizer With Tube Cylinder Assy
      G02962945Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. CONNECT FRONT STABILIZER CONTROL TUBE NO. 1 
    1. Install the bracket by temporarily tightening the bolt.
    2. Connect the front stabilizer control tube No. 1.
      1. Apply suspension fluid to the threads of the flare nuts.
      2. Using SST, connect the front stabilizer control tube No. 1 to the front stabilizer w/ tube cylinder assy and tighten the flare nuts.

        SST 09023-12701

        Torque: 44 N.m (450 kgf.cm, 32 ft.lbf) 

        Fig 13: Connecting Front Stabilizer Control Tube No. 1
        G02962946Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Fully tighten the bolt.

      Torque: 29 N.m (296 kgf.cm, 21 ft.lbf) 

    4. Install the tube clamp bracket No. 3 with bolt (A).

      Torque: 29 N.m (296 kgf.cm, 21 ft.lbf) 

      Fig 14: Installing Tube Clamp Bracket No. 3
      G02962947Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Install the return tube sub-assy with bolt (B).

      Torque: 28 N.m (286 kgf.cm, 21 ft.lbf) 

    6. Install the front apron seal LH with the 7 clips.
      Fig 15: Installing Front Apron Seal LH
      G02962948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. BLEED SUSPENSION FLUID (SEE  SUSPENSION FLUID (KDSS)   ) 

    SST 09760-60010

  17. CHECK FOR FLUID LEAKS (SEE  ON-VEHICLE INSPECTION   ) 
  18. INSTALL FRONT DISC WHEEL 

    Torque: 112 N.m (1,140 kgf.cm, 83 ft.lbf) 

  19. INSTALL STABILIZER BAR FRONT 
    1. Install the 2 front stabilizer lower bracket bushes to the stabilizer bar front.
      1. Align the protrusions on the bushes with the identification marks on the front stabilizer bar front with the protrusions facing inward.
        Fig 16: Installing Front Stabilizer Lower Bracket Bushes To Stabilizer Front
        G02962949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Support the stabilizer bar front with the identification marks facing down with a jack. Place a wooden block between the jack and the stabilizer bar front to prevent damage.

      HINT:

      Place the jack under the left side of the vehicle.

      Fig 17: Supporting Stabilizer Bar Front With Jack
      G02962950Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a socket hexagon wrench (10 mm), install the stabilizer bar front with the 4 bolts and 2 front stabilizer lower brackets.

      Torque: 59 N.m (602 kgf.cm, 44 ft.lbf) 

      1. Check that the protrusions on the front stabilizer lower bracket bushes are positioned within 20° of the identification marks.
        Fig 18: Installing Stabilizer Bar Front
        G02962951Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Install the 4 bolts, 2 front stabilizer brackets and 2 front stabilizer link bushes with the wheels on the ground.

      Torque: 75 N.m (765 kgf.cm, 55 ft.lbf) 

      HINT:

      There are stamps on the front stabilizer brackets to distinguish between right and left.

      Fig 19: Installing Front Stabilizer Brackets & Front Stabilizer Link Bushes
      G02962952Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 20: Identifying Stamps On Front Stabilizer Brackets
      G02962953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. FULLY TIGHTEN FRONT STABILIZER W/TUBE CYLINDER ASSY 
    1. Fully tighten the bolt on the front stabilizer w/ tube cylinder assy

      Torque: 135 N.m (1,377 kgf.cm, 100 ft.lbf) 

      NOTE: Tighten the bolt with the wheels on the ground.
      Fig 21: Tightening Front Stabilizer With Tube Cylinder Assy
      G02962954Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. FULLY TIGHTEN FRONT STABILIZER LINK ASSY 
    1. Fully tighten the bolt on the front stabilizer link assy.

      Torque: 130 N.m (1,326 kgf.cm, 96 ft.lbf) 

      NOTE: Tighten the bolt with the wheels on the ground.
      Fig 22: Tightening Front Stabilizer Link Assy
      G02962955Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. CONNECT STABILIZER BAR REAR 
    1. Support the stabilizer bar rear with a jack. Place a wooden block between the jack and the stabilizer bar rear to prevent damage.

      HINT:

      Place the jack under the left side of the vehicle.

      Fig 23: Supporting Stabilizer Bar Rear With Jack
      G02962956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a socket hexagon wrench (8 mm), connect the stabilizer bar rear with the 4 bolts and 2 rear stabilizer brackets lower.

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

      Fig 24: Connecting Stabilizer Bar Rear & Rear Stabilizer Brackets Lower
      G02962957Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. STABILIZE SUSPENSION 
    1. Lower the vehicle.
      1. Place the 4 wheels on the ground with the SST connected.
        NOTE:
        • Pay attention to the SST while lowering the vehicle.
        • Ensure that the jack and lift are completely separated from the vehicle.
    2. Set charging pressure to within the specified range.
      1. Charge suspension fluid with the SST.

        Specified charging pressure: 

        • 2.60 to 3.00 MPa at 20°C (68°F) (Fluid temperature) 
        • 2.90 to 3.40 MPa at 35°C (95°F) (Fluid temperature) 
    3. Stabilize the vehicle.
      1. Do not perform any operations on the vehicle for 30 seconds or more after charging suspension fluid. The vehicle will stabilize during this time.
  24. CHECK SUSPENSION FLUID PRESSURE 
    1. Check the suspension fluid pressure.
  25. MEASURE VEHICLE HEIGHT 
    1. Measure the difference in vehicle height between the left and right sides.
      1. For measurement procedures, refer to ON-VEHICLE INSPECTION .
    2. Tighten the stabilizer control adapter shutter valves.

      Torque: 14 N.m (140 kgf.cm, 10 ft.lbf) 

      Fig 25: Tightening Stabilizer Control Adapter Shutter Valves
      G02962958Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the SST joints.
      NOTE:
      • Ensure that the stabilizer control adapter shutter valves are completely closed before disconnecting the SST joints.
      • Ensure that no pressure is applied to the SST hoses before disconnecting the SST joints.
  26. INSTALL ENGINE UNDER COVER SUB-ASSY NO. 1 
  27. INSTALL SPARE DISC WHEEL 
  28. INSTALL STEP SUB-ASSY LH (SEE  REPLACEMENT  ) 
  29. INSTALL BATTERY 
  30. INSTALL RADIATOR SUPPORT SEAL UPPER