Checking and adjusting the front wheel alignment angles (Mercedes-Benz E-Class W123)

Correct front wheel alignment has a major impact on handling and reduces tire wear. Before checking them, make sure the vehicle is loaded only with its own weight, fuel, and equipment, and that the tire pressure is correct.

1. Place the car on a horizontal surface, set the wheels to a strictly straight-line position, and then roll the car back 4-5 m and then forward again.

2. Using a wheel alignment tool, ensure that the wheels have the positive toe-in specified in the documentation (0°15'-0°35' or 2.0-4.0 mm).

3. If adjustment is necessary, loosen the clamp bolts of both tie rods and turn the tie rods by equal angles until the specified installation angle is obtained.

4. The distances between the centers of the ball pins of both transverse rods must be equal. Tighten the clamp bolts (see Removal and installation of transverse and longitudinal steering rods).

Original material on the website: MercedesMAN

Checking the camber angles and the longitudinal tilt of the steering axis requires special equipment and should be carried out at a service station. The camber angle of the front wheels is adjusted by eccentric bolts located on the inner ends of the lower suspension arms. The longitudinal tilt of the steering axis is adjusted by changing the length of the front suspension support rod.