Front Wheel Alignment: Adjustment

INSPECT TIRE (SEE WHEEL AND TIRE SYSTEM )

Fig 1: Measuring Tire Height
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MEASURE VEHICLE HEIGHT

Vehicle height:

VEHICLE HEIGHT SPECIFICATION

Front (A - B)	95 mm (3.74 in.)
Rear (D - C)	62 mm (2.44 in.)

Measuring points:

Ground clearance of front wheel center
Ground clearance of lower arm No.1 set bolt center
Ground clearance of rear axle carrier bush set bolt center
Ground clearance of rear wheel center

NOTE: Before inspecting the wheel alignment, adjust the vehicle height to the specified value.

HINT:

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

Fig 2: Identifying Toe In

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INSPECT TOE-IN
Toe-in:
TOE-IN SPECIFICATION

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

HINT:
- Measure "C-D" only when "A+B" can not be measured.
- If toe-in is not within the specified range, adjust it at the rack ends.
ADJUST TOE-IN
1. Measure the thread lengths of the right and left rack ends.
  Standard: Difference in thread length of 1.5mm or less
2. Remove the rack boot set clips.
3. Loosen the tie rod end lock nuts.
4. Adjust the rack ends if the difference in thread length between the right and left rack ends is not within the specified range.
  1. Extend the shorter rack end if the measured toe-in deviates toward the outer-side.
  2. Shorten the longer rack end if the measured toe-in deviates toward the inner-side.
5. Turn the right and left rack ends by an equal amount to adjust toe-in.
  HINT:
  
  Try to adjust toe-in to the center of the specified range.
6. Make sure that the lengths of the right and left rack ends are the same.
  Standard: 0 +/- 1mm
7. Torque the tie rod end lock nuts.
  Torque: 74 N.M (749 kgf.cm, 54 ft.lbf)
  
  NOTE: Temporarily tighten the lock nut while holding the hexagonal part of the steering rack end so that the lock nut and the steering rack end do not turn together. Hold the width across flat of the tie rod end and tighten the lock nut.
8. Place the boots on the seats and install the clips.
  HINT:
  
  Make sure that the boots are not twisted.
9. Perform VSC system calibration (SEE CALIBRATION ).
Fig 3: Installing Clip
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT WHEEL ANGLE

Turn the steering wheel fully left and right and measure the turning angle.

Wheel turning angle:

WHEEL TURNING ANGLE SPECIFICATION

Inside wheel	40°35' +/- 2° (40.58° +/- 2°)
Outside wheel: Reference	34° 15' (34.25°)

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

INSPECT CAMBER, CASTER AND STEERING AXIS INCLINATION

Put the front wheel on the center of the alignment tester.
Remove the center ornament.
Install the camber-caster-steering axis inclination gauge at the center of the axle hub or drive shaft.

Inspect the camber, caster and steering axis inclination.

Camber, caster and steering axis inclination:

STEERING AXIS INCLINATION

Camber Right-left error	0°35' +/- 45' (-0.58° +/- 0.75°) 45' (0.75°) or less
Caster Right-left error	3° 10' +/- 45' (3.17° +/- 0.75°) 45' (0.75°) or less
Steering axis inclination Right-left error	12°35' +/- 45' (12.58° +/- 0.75°) 45' (0.75°) or less

NOTE:

Inspect while the vehicle is empty (without the spare tire or tools on board).
The maximum tolerance of right and left difference for the camber and caster is 45' or less.

Remove the camber-caster-steering axis inclination gauge and attachment.
Install the center ornament.

Fig 4: Measuring Turning Angle

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Identifying Alignment Tester

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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.

ADJUST CAMBER

NOTE: Inspect toe-in after the camber has been adjusted.

Remove the front wheel.
Remove the 2 nuts on the lower side of the shock absorber.
Clean the installation surfaces of the shock absorber and the steering knuckle.
Temporarily install the 2 nuts.

Fig 6: Locating Nut
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fully push or pull the front axle hub in the direction of the required adjustment.
Tighten the nuts.
Torque: 153 N.M (1,560 kgf.cm, 113 ft.lbf)

NOTE: Keep the bolts from rotating and torque the nuts.
Install the front wheel.
Torque: 103 N.M (1,050 kgf.cm, 76 ft.lbf)

Fig 7: Pulling Front Axle Hub
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the camber.

If the measured value is not within the specified range, calculate the required adjustment amount using the formula below.

(Camber adjustment amount) = Center of the specified range - Measured value

Check installed bolts combination. Select appropriate bolts from the table below to adjust the camber to within the specified range.

INSTALLED BOLTS SPECIFICATION

Move the axle toward (+) in step (e)	Refer to table (1) (Move the axle toward positive side)
Move the axle toward (-) in step (e)	Refer to table (2) (Move the axle toward negative side)

Fig 8: Removing Bolt

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HINT:

Measure the camber with the bolts currently installed and check the amount of loosens from the specified range.
(Ex: The measured value is -1°35')
Determine whether the direction of the required adjustment is toward the positive or negative side.
(Ex: Refer to table1 )
Check the required adjustment amount from the measured value.(Table(1), Table(2))
(Ex: Select "Adjusting value:0°45' to 1°00'")
Check the currently installed bolts combination.
(Ex: "Installed bolt: 1-No Dot 2-2Dots")
Select the adjusting bolts.
(Ex:"Selected Bolt Combination" results in F:1-3Dots 2-3Dots)
Measure the alignment again and check that it is within the specified range.
(Ex: Measured value is within -0°35' +/- 45')