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Home >> Lexus >> 2004 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 569 (Suspension) >> Front Wheel Alignment >> Adjustment

Front Wheel Alignment: Adjustment

WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

When wheel alignment has been adjusted, and if suspension or underbody components have been removed/installed or replaced, be sure to perform the following initialization procedure in order for the system to function normally:

  1. Disconnect the negative battery terminal for more than 2 seconds.
  2. Reconnect the negative battery terminal.
  3. Perform zero point calibration of the yaw rate and acceleration sensor and test mode inspection.

HINT: See CALIBRATION

  1. INSPECT TIRES  (See INSPECTION )
  2. MEASURE VEHICLE HEIGHT 
    1. Measure vehicle height.

      Vehicle height: Except air suspension 

      VEHICLE HEIGHT SPECIFICATION - EXCEPT AIR SUSPENSION

        Front B - A Roar D - C
      FF 119.6 mm (4.71 in.) 41.1 mm (1.62 in.)
      4WD 109.6 mm (4.32 in.) 31.1 mm (1.22 in.)

      Air suspension 

      VEHICLE HEIGHT SPECIFICATION - AIR SUSPENSION

        Front B - A Rear D - C
      FF 116.9 mm (4.60 in.) 41.1 mm (1.62 in.)
      4WD 111.9 mm (4.41 in.) 36.1 mm (1.42 in.)

      Measuring points: 

      1. Ground clearance of lower suspension arm No. 2 bush set bolt center 
      2. Ground clearance of front wheel center 
      3. Ground clearance of strut rod set bolt center 
      4. Ground clearance of rear wheel center 
      Fig 1: Identifying Ground Clearance Measuring Points
      G05272396Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Before inspecting the wheel alignment, adjust the vehicle height to the specified range.

      HINT:

      Bounce the vehicle up and down at the corners to stabilize the suspension and inspect vehicle height.

  3. INSPECT TOE-IN 
    1. Inspect toe-in.

      Toe-in 

      TOE-IN SPECIFICATION

      Toe-in (total) -
      A + B:
      C - D:
      0° +- 12' (0° +- 0.2°)
      0 +- 2 mm (0 +- 0.08 in.)

      If the toe-in is not within the specified range, adjust it at the rack ends.

      Fig 2: Inspecting Toe-In
      G05272397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. ADJUST TOE-IN 
    1. Remove the rack boot set clips.
    2. Loosen the tie rod end lock nuts.
    3. Turn the right and left rack ends by equal amounts to adjust the toe-in.

      HINT:

      Try to adjust the toe-in to the center of the specified range.

    4. Make sure that the lengths of the right and left rack ends are the same.
    5. Place the boots on the seats and install the clips.

      HINT:

      Make sure that the boots are not twisted.

    6. Tighten the tie rod end lock nuts.

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

      Fig 3: Adjusting Toe-In
      G05272398Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Perform VSC system calibration (See CALIBRATION ).
  5. INSPECT WHEEL ANGLE 
    1. Turn the steering wheel fully left and right and measure the turning angle.

      Wheel turning angle: Except air suspension 

      WHEEL TURNING ANGLE: EXCEPT AIR SUSPENSION

        Inside wheel Outside wheel: Reference
      FF 35°28' +- 2° (35.47° +- 2°) 31°13' (31.22°)
      4WD 35°41l +- 2° (35.68° +- 2°) 31 °22' (31.37°)
      Fig 4: Measuring Turning Angle
      G04977671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Air suspension 

      AIR SUSPENSION

        Inside wheel Outside wheel: Reference
      FF 35°42' +- 2° (35.70° +- 2°) 31 °18' (31.30°)
      4WD 35°48' +- 2° (35.80° +- 2°) 31°18' (31.30°)

      If the right and left inside wheel angles differ from the specified value, check the right and left rack end lengths.

  6. INSPECT CAMBER, CASTER AND STEERING AXIS INCLINATION 
    1. Put the front wheel on the center of the alignment tester.
      Fig 5: Inspecting Camber, Caster And Steering Axis Inclination
      G04977672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Set the camber-caster-king pin gauge and attachment at the center of the axle hub or drive shaft.

      Camber, caster and steering axis inclination: 

      Except air suspension 

      CAMBER, CASTER AND STEERING AXIS INCLINATION - EXCEPT AIR SUSPENSION

        FF 4WD
      Camber Right-left difference -0°40' +- 45' (-0.67° +- 0.75°) 45' (0.75°) or less -0°35' +- 45' (-0.58° +- 0.75°) 45' (0.75°) or less
      Caster Right-left difference 2°451 +- 451 (2.75° +- 0.75°) 45' (0.75°) or less 2°45' +- 45' (2.75° +- 0.75°) 45' (0.75°) or less
      Steering axis inclination Right-left difference 10°45' +- 451 (10.75° +- 0.75°) 45' (0.75°) or less 10°45' +- 45' (10.75° +- 0.75°) 45' (0.75°) or less
      Fig 6: Identifying Shock Absorber Nuts
      G05272401Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Air suspension 

      CAMBER, CASTER AND STEERING AXIS INCLINATION - AIR SUSPENSION

        FF 4WD
      Camber Right-left difference -0°40' +- 45' (-0.67° +- 0.75°) 45' (0.75°) or less -0°37' +- 45' (-0.62° +- 0.75°) 45' (0.75°) or less
      Caster Right-left difference 2°5r +- 45' (2.85° +- 0.75°) 45* (0.75°) or less 2°50' + 45' (2.83° +- 0.75°) 45'(0.75°) or less
      Steering axis inclination Right-left difference 10°42' +- 45' (10.70° +- 0.75°) 45' (0.75°) or less 10°35' +- 45' (10.58° +- 0.75°) 45' (0.75°) or less

      If the caster and steering axis inclination are not within the specified range after the camber has been correctly adjusted, recheck the suspension parts for damage and/or wear.

  7. ADJUST CAMBER 
    NOTE: After the camber has been adjusted, inspect the toe-in.
    1. Remove the front wheel.
    2. Remove the 2 nuts on the lower side of the front shock absorber. (Procedure "B")
      NOTE: When removing the nuts, keep the bolts from rotating.
    3. Clean the installation surfaces of the shock absorber and the steering knuckle.
    4. Temporarily install the 2 nuts.
    5. Adjust the camber by pushing or pulling the lower side of the shock absorber in the direction in which the camber adjusts the nuts.
    6. Tighten the nuts.

      Torque: 230 N*m (2,350 kgf*cm, 170 ft.*lbf) 

      NOTE: When installing the nuts, keep the bolts from rotating and then torque the nuts.
    7. Install the front wheel.

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

    8. Check the camber.

      HINT:

      • Try to adjust the camber to the center of the specified range.
      • Adjusting value for the set bolts is 6' to 30' (0.1° to 0.5°).

        If the camber is not within the specified range, estimate how much additional camber adjustment will be required, and select the camber adjusting bolt.

        Fig 7: Adjusting Camber
        G05272402Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: Tighten the adjusting bolt with a new nut.
        Fig 8: Camber Adjusting Bolt Reference Table
        G05272403Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Perform the step mentioned above again. At procedure "B", replace 1 or 2 selected bolts.

      HINT:

      When replacing the 2 bolts, replace 1 bolt at a time.

  8. FRONT WHEELS FACING STRAIGHT AHEAD 
  9. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: Disconnect the negative battery terminal for more than 2 seconds.
  10. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    NOTE: When disconnecting the cable, some system need to be initialized after the cable is reconnected. (See INITIALIZATION
  11. PERFORM YAW RATE SENSOR ZERO POINT CALIBRATION 
  12. HINT:CALIBRATION

  13. CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION 

    HINT:DTC C1290/66 STEERING ANGLE SENSOR ZERO POINT MALFUNCTION