Installing Test Equipment,

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Set up the test equipment on the front and rear wheels. Set up the test equipment according to the instructions. Position the turntables under the front wheels. Use turntables which take up lateral movement.

NOTE:

The car must stand level when the front wheels are on the turntables. This is to ensure that the correct values are obtained when checking the camber and caster.

Bounce the front and rear suspension heavily a few times when the car has sunk onto the turntables. This is so that the suspension resumes the normal setting.

NOTE:

Check that none of the turntables is approaching its limit position.

CHECKING THE REAR CAMBER ANGLE

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Check the camber angle on both sides.

For the correct values, see: WHEEL ANGLES .

CHECKING REAR TOE ANGLE

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NOTE:

Always check thrust angle when checking/adjusting rear toe angle.

Check that the instruments are calibrated to one another on the front and rear axle. This is extremely important in order to be able to adjust toe angle of the rear wheels in relation to the car's thrust line (geometrical driving axis).

The thrust line is the line created when the toe-in angles for the rear wheels are equally divided (see the illustration).

The difference between the symmetry line of the wheels and the thrust line is called the thrust angle. The thrust angle must not deviate by more than a maximum of 0°± 0.25° from the symmetry line of the wheels.

NOTE:

The differences in the diagram are heavily exaggerated in order to illustrate the differences.

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Check:

the symmetry line of the wheels
the thrust line
the thrust angle
Toe angle.

For the correct values for each model, see WHEEL ANGLES .

ADJUSTING REAR TOE ANGLE

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Slacken off the inner nut on the lower control arm.

Use the eccentric screw to adjust toe angle to the correct value. See WHEEL ANGLES .

Tighten the nuts slightly.

Check the thrust angle. It does not comply with the specified value, undo the nuts and readjust the toe angle.

Tighten the nut. Tighten to 100 Nm .

CHECKING THE FRONT CAMBER ANGLE

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Check the camber angle on both sides.

For the correct values, see: WHEEL ANGLES .

CHECKING THE FRONT CASTER ANGLE

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Check the caster angle on both sides.

For the correct values, see: WHEEL ANGLES .

CHECKING FRONT TOE ANGLE

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Check that the instruments are adjusted in relation to each other on the front and rear axles. This is extremely important so that the front wheel toe-in can be adjusted in relation to the thrust line of the car (geometric driving axis). The thrust line is the line created when the toe-in angles for the rear wheels are equally divided (see the illustration). The difference between the symmetry line of the wheels and the thrust line is called the thrust angle. The thrust angle must not deviate by more than a maximum of 0° ± 0.25° from the symmetry line of the wheels.

Check:

the symmetry line of the wheels
the thrust line
the thrust angle.

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NOTE:

The differences in the diagram are heavily exaggerated in order to illustrate the differences.

For the correct values for each model, see WHEEL ANGLES .

ADJUSTING FRONT TOE ANGLE

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Adjust with the tie rods once the lock nuts have been slackened. Positive adjustment values generate a toe-in angle while negative values generate a toe-out angle.

For the correct values for each model, see WHEEL ANGLES .

NOTE:

The lengths of the tie rods must not vary between themselves by more than 2 mm. Measure between the lock nut and the edge of thread.

Treat the strut threads using rustproofing agent after tightening.