Wheel Alignment

Overview





Before checking the wheel geometry, the height of the car must be measured. See Measuring car height before checking wheel geometry.
1. Connect equipment for 4-wheel alignment and follow the description for the relevant equipment.
2. Check rear wheel geometry according to tables, refer to Specifications, Mechanical, and adjust as necessary.
3. Check front wheel geometry according to tables, refer to Specifications, Mechanical and adjust as necessary.

Adjusting rear toe angle





1. Use a 4-column lift to raise the car so that the wheels are under pressure.
2. Fasten the longitudinal links with Fixture 89 96 795
3. Slightly undo the bolts to the body bracket of one of the longitudinal links.
4. Using sleeve, 89 96 811 move the bracket outwards or inwards. Move it inwards to increase toe-in Check the value, refer to Specifications, Mechanical.
5. Tighten the bolts.
Tightening torque 90 Nm (70 ft. lbs.) +30°.
6. Repeat steps 3-5 on the other side.
7. Treat the body with corrosion protection.
8. Proceed with Adjusting front toe angle

Adjusting front toe angle





1. Start with Adjusting rear toe angle.
2. Fasten the steering wheel in its straight ahead position.
3. Undo the lock nut on the track rod.
4. Rotate the track rod clockwise to reduce the toe angle or anticlockwise to increase the toe angle. Read off the value and compare it with Wheel alignment, refer to Specifications, Mechanical.

IMPORTANT Make sure the boot does not rotate as well.

5. Tighten the lock nut.
Tightening torque 70 Nm (55 ft. lbs.)





6. Check the track rod length by measuring the distance (A) between the lock nut and the groove in the track rod by the boot. The distance must be max. 210 mm.
Maximum difference in distance between right and left-hand sides is 7 mm.
7. Treat the track rod threads with corrosion protection after tightening.

Camber





Camber is not adjustable. If it is not within the specified limits, defective components must be replaced.
For alignment values see Front wheel alignment (15") or Front wheel alignment (16"), refer to Specifications, Mechanical.

Castor





Castor is not adjustable. If it is not within the specified limits, defective components must be replaced.
For values refer to Specifications, Mechanical.

Swivel-pin inclination





Swivel-pin inclination cannot be adjusted as it is determined by the steering swivel member.
If it is not within the specified limits despite the camber being correct, the steering swivel member is at fault and will have to be replaced.
For values refer to Specifications, Mechanical.

Steering angle





Before checking the steering angles of the wheels, the toe-in must be correctly set See Front wheel alignment (15") or Front wheel alignment.
Measurement of the steering angle is carried out using two standard, graduated turntables combined with optical measuring equipment (pictured). Each turntable should be centered as accurately as possible underneath the respective wheel.
Turn the steering wheel to the left, for instance, until the right-hand (outside) wheel is at an angle of 20°. If the steering angle is correct, the other (inside) wheel should be at an angle of 21.25° ± 0.5 °.
If the measurements show the steering angle to be incorrect, then one or both steering swivel members must have become distorted. Defective steering swivel members must be changed.