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Home >> Toyota >> 2006 >> Sienna XLE, FWD >> Repair and Diagnosis >> Suspension >> Wheel Alignment >> Suspension System >> Front Wheel Alignment >> Adjustment

Front Wheel Alignment: Adjustment

  1. INSPECT TIRE 
  2. MEASURE VEHICLE HEIGHT 
    1. Bounce the vehicle at the corners up and down to stabilize the suspension and inspect the vehicle height.

      Vehicle height: 

      FF 

      VEHICLE HEIGHT SPECIFICATION CHART (FF)

      Front (A - B) Rear (D - C)
      114 mm (4.48 in.) -18.0 mm (-0.7 in.)

      4WD 

      VEHICLE HEIGHT SPECIFICATION CHART (4WD)

      Front (A - B) Rear (D - C)
      116 mm (4.57 in.) -53.5 mm (-21 in.)

    Measuring points: 

    A : Ground clearance of front wheel center 

    B : Ground clearance of lower suspension arm No.2 set bolt center 

    C : Ground clearance of rear axle carrier bush set bolt center 

    D : Ground clearance of rear wheel center 

    Fig 1: Measuring Vehicle Height
    G04497987Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE: Before inspecting the wheel alignment, adjust the vehicle height to the specified value.

    If the vehicle height is not the specified value, Adjust it by pushing down or lifting the body.

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

      Toe-in 

      TOE-IN SPECIFICATION CHART

      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 value, adjust it at the rack ends.

      Fig 2: Inspecting Wheel Alignment
      G04497988Courtesy 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 an equal amount to adjust the toe-in.

      HINT:

      Adjust the toe-in to the center of the specified value as much as possible.

    4. Make sure that the lengths of the right and left rack ends are the same.
    5. Torque the tie rod end lock nuts.

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

    6. Place the boots on the seats and install the clips.

      HINT:

      Make sure that the boots are not twisted.

      Fig 3: Tightening Tie Rod End Lock Nuts
      G04497989Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT WHEEL ANGLE 
    1. Turn the steering wheel fully and measure the turning angle.

      Wheel turning angle: 

      FF 

      WHEEL SPECIFICATION (FF)

      Inside wheel Outside wheel
      42°45' +- 2°
      (42.75° +- 2°)      		 36°21' (36.35°)

      4WD 

      WHEEL SPECIFICATION (4WD)

      Inside wheel Outside wheel
      42°42' +- 2°
      (42.70° +- 2°)      		 36°16' (36.27°)

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

      Fig 4: Checking Right And Left Rack End Lengths
      G04497990Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT CAMBER, CASTER AND STEERING AXIS INCLINATION 
    1. Install the camber-caster-kingpin gauge or position the vehicle on the wheel alignment tester.
    2. Inspect the camber, caster and steering axis inclination.

      FF 

      CAMBER AND CASTER SPECIFICATION (FF)

      Camber Right-left error Caster Right-left error Steering axis inclination Right-left error
      -0°17' +- 45'
      (-0.28° +- 0.75°) 30' (0.5°) or less      		 2°48' +- 45'
      (2.80° +- 0.75°) 30' (0.5°) or less      		 10°25' +- 45'
      (10.42° +- 0.75°) 30' (0.5°) or less
      Fig 5: Installing Camber-Caster-Kingpin Gauge Or Position
      G04497991Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      4WD 

      CAMBER AND CASTER SPECIFICATION (4WD)

      Camber Right-left error Caster Right-left error Steering axis inclination Right-left error
      -0°17' +- 45'
      (-0.28° +- 0.75°) 30' (0.5°) or less      		 2°40' +- 45'
      (2.67° +- 0.75°) 30' (0.5°) or less      		 10°12' +- 45'
      (10.02° +- 0.75°) 30' (0.5°) or less

      If the caster and steering axis inclination are not within the specified values, after the camber has been correctly adjusted, recheck the suspension parts for damaged and / or worn out parts.

  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 shock absorber. (Procedure "B")
      NOTE: When removing the nut, hold the bolt not to rotate.
    3. Clean the installation surfaces of the shock absorber and the steering knuckle.
    4. Temporarily install the 2 nuts.
      Fig 6: Removing Nuts On Lower Side Of Shock Absorber
      G04497992Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Adjust the camber by pushing or pulling the lower side of the shock absorber in the direction in which the camber adjustment is required.
    6. Tighten the nuts.

      Torque: 210 N*m (2,140 kgf*cm, 155 ft.*lbf) 

      NOTE: When installing nut, stop the bolt from rotating and torque the nut.
    7. Install the front wheel.

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

      Fig 7: Installing Front Wheel
      G04497993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Check the camber.
      Fig 8: Bolt Adjusting Valve Chart
      G04497994Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • Adjust the camber to the center of the specified value as much as possible.
      • Adjusting value for the set bolts is 6' to 30' (0.1° to 0.5°).

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

      NOTE: Tighten the adjusting bolt with a washer and a new nut.
    9. Perform the procedure mentioned above again. At procedure "B", replace 1 or 2 selected bolts.

      HINT:

      When replacing the 2 bolts, replace 1 bolt for each time.

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