Removal, checking and installation front shock absorbers (Mercedes-Benz M-Class W163)

Attention! Shock absorbers should be replaced in pairs!

Note: All self-locking bolts and nuts must be replaced!

1. The installation details of the front shock absorbers are shown in the illustration, to which all references in the text refer.

2. Loosen the upper shock absorber support fastener.

3. Jack up the car and place it on supports.

4. Remove the front wheels and wheel arch protectors.

5. Loosen the nut, remove the mounting bolt (11u), disconnect the shock absorber from the lower wishbone (4) and remove it from under the vehicle.

6. Loosen the nut (11a) and remove the upper damper assembly components (11a÷11f).

Examination

1. Assess the condition of the components and replace any faulty parts.

Article based on data from the website (MercedesMAN)

Attention! The upper (11c) and lower (11d) cushions differ in rigidity and must be installed strictly in their original places - the cushions are usually marked accordingly, or painted in different colors: the upper one - in white, the lower one - in yellow. Also make sure that the washers are installed in their places correctly (11b, 11e and 11f).

2. Carefully examine the condition of the shock absorber piston rod - if deformations or signs of a violation of the smoothness of the piston movement are detected, the shock absorber must be replaced.

3. Assess the condition of the lower shock absorber support bushing.

4. Check for signs of external leaks developing.

5. Replace the defective shock absorber, preferably in a set with the second one.

Installation

Installation is carried out in the reverse order of dismantling the components.