lemon-mirror:
Home >> Toyota >> 2003 >> Celica GT, Automatic >> Repair and Diagnosis >> Suspension >> Wheel Alignment >> Front Wheel Alignment >> Inspection

Front Wheel Alignment: Inspection

  1. Measure Vehicle Height 
    VEHICLE HEIGHT

    Tire Size Front(1) mm (in.) Rear(2) mm (in.)
    195/60R15, P195/60R15 190 (7.48) 224 (8.82)
    205/55R15, P205/55R15 190 (7.48) 226 (8.90)
    205/50R16 193 (7.60) 225 (8.86)
    (1) Front measuring point. Measure the distance from the ground to the center of the front side lower suspension arm mounting bolt.
    (2) Rear measuring point. Measure the distance from the ground to the center of the rear side lower suspension arm suspension member side set bolt.
    NOTE: Before inspecting the wheel alignment, adjust the vehicle height to the specified value.

    If the vehicle height is not the specified value, try to adjust it by pushing down on or lifting the body.

    Fig 1: Measuring Vehicle Height
    G02902614Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Install Camber-Caster-Kingpin Gauge Or Position Vehicle On Wheel Alignment Tester 

    Follow the specific instructions of the equipment manufacturer.

  3. Inspect Camber, Caster And Steering Axis Inclination 
    CAMBER, CASTER AND STEERING AXIS INCLINATION: 195/60R15, P195/60R15 TIRE:

    Component Specifications
    Camber -0 °28' +/- 45' (-0.47° +/- 0.75°)
    Right-Left Error 45' (0.75°) Or Less
    Caster 2°07' +/- 45' (2.12° +/- 0.75°)
    Right-Left Error 45' (0.75°) Or Less
    Steering Axis Inclination 13°09' +/- 45' (13.15° +/- 0.75°)
    Right-Left Error 45' (0.75°) Or Less
    Fig 2: Positioning Vehicle On Wheel Alignment Tester
    G02902615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    205/55R15, P205/55R15 tire:

    Component Specifications
    Camber -0 °25' +/- 45' (-0.42° +/- 0.75°)
    Right-Left Error 45' (0.75°) Or Less
    Caster 2°01' +/- 45' (2.02° +/- 0.75°)
    Right-Left Error 45' (0.75°) Or Less
    Steering Axis Inclination 13°04' +/- 45' (13.07° +/- 0.75°)
    Right-Left Error 45' (0.75°) Or Less
    205/50R16 TIRE

    Component Specifications
    Camber -0 °29' +/- 45' (-0.48° +/- 0.75°)
    Right-Left Error 45' (0.75°) Or Less
    Caster 2°02' +/- 45'(2.03°+/- 0.75°)
    Right-Left Error 45' (0.75°) Or Less
    Steering Axis Inclination 45' (0.75°) or less
    13°12' +/- 45' (13.20° +/- 0.75°)
    Right-Left Error 45' (0.75°) 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.

  4. 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.
      Fig 3: Locating Nuts On Lower Side Of Shock Absorber
      G02902616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Coat the threads of the nuts with engine oil.
    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 adjustment is required.
      Fig 4: Adjusting Camber
      G02902617Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Tighten the nuts.

      Torque: 153 N.m (1,560 kgf.cm, 113 ft.lbf) 

    7. Install the front wheel.

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

    8. Check the camber.
      NOTE:
      • Try to adjust the camber to the center of the specified value.
      • Adjusting value for the set bolts is 6' - 30' (0.1° - 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.

        Fig 5: Adjusting Bolt & Set Bolt Value Reference Chart
        G02902618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Do the steps mentioned above again. Between step (b) and (c), replace 1 or 2 selected bolts.
      NOTE: When replacing the 2 bolts, replace 1 bolt for each time.
  5. Inspect Toe-In 
    TOE-IN VALUE

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

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

    Fig 6: Inspecting Toe-In
    G02902619Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. Adjust Toe-In 
    1. Remove the rack boot set clips.
    2. Loosen the tie rod end lock nuts.
      Fig 7: Loosening Tie Rod End Lock Nuts
      G02902620Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the right and left rack ends by an equal amount to adjust the toe-in.
      NOTE: Try to adjust the toe-in to the center of the specified value.
    4. Make sure that the lengths of the right and left rack ends are the same.
      Fig 8: Identifying Right & Left Rack Ends Length Dimensions
      G02902621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Rack end length difference: 1.5 mm (0.059 in.) or less 

    5. Torque the tie rod end lock nuts.

      Torque: 74 N.m (750 kg.cm, 54 ft.lbf) 

    6. Place the boots on the seats and install the clips.
      NOTE: Make sure that the boots are not twisted.
  7. Inspect Wheel Angle 

Turn the steering wheel fully, and measure the turning angle.

Fig 9: Inspecting Wheel Angle
G02902622Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
WHEEL TURNING ANGLE: 195/60R15, P195/60R15 TIRE

Procedure Specification
Inside wheel 38°41' +/- 2° (38.68° +/- 2°)
Outside wheel: Reference 33°20' (33.33°)
205/55R15, P205/55R15 TIRE

Procedure Specification
Inside wheel 38°46' +/- 2° (38.77° +/- 2°)
Outside wheel: Reference 33°25' (33.42°)
205/50R16 TIRE

Procedure Specification
Inside wheel 38°38' +/- 2° (38.63° +/- 2°)
Outside wheel: Reference 33°19' (33.32°)

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

· About lemon-mirror