Checking the condition of shock absorbers (Mercedes-Benz E-Class W210)

By the time two sets of tires wear out, the efficiency of the shock absorbers is only 50% of the original. In this state, they should be replaced. Most drivers unconsciously compensate for the decrease in the efficiency of the shock absorbers by changing the control. Therefore, it is necessary to conduct an accurate diagnosis of these elements on a special stand once a year. The rocking method, when, having pressed on the corresponding side of the car wing, then sharply released, checking the action of the shock absorbers, does not replace diagnostics. This method can only determine a completely failed shock absorber. However, there are several signs indicating a partial loss of their efficiency. Pay attention to the following points.

Sequence of works

1. Shaking of the steering wheel may indicate that the wheels are not in constant contact with the road.

2. Long-term vibrations of the body when driving over uneven surfaces.

3. "Floating" behavior of the car when turning, since the wheel of the inner radius of the turn is not pressed sufficiently against the road, and the outer wheel is not sufficiently unloaded by the shock absorber.



4. Uneven tire wear.

5. Noticeable oil leaks on the shock absorber strut, reaching the lower cup. Minor traces of oil are normal.

6. Extraneous rattling noise when driving can also be a consequence of shock absorber wear. In this case, it is important to accurately determine the source of the sound.

The principle of operation of the shock absorber

The E-Class models are equipped with double-piston gas shock absorbers. They have a number of advantages. The most important is a long service life. Due to the constant vertical vibrations and movement of the rod and piston inside conventional shock absorbers, bubbles form in the working fluid, which worsen the performance and cause the wheels to bounce on road irregularities. In Mercedes gas shock absorbers, the gas pressure suppresses the formation of such bubbles even under high loads.

Precautions when performing independent work on the chassis and steering

1. Chassis and steering repair work requires experience and often special equipment. If you are not sure that you can perform the repair yourself or do not have the necessary tools, it is better to entrust the work to a service station. Damaged suspension parts cannot be straightened or welded. As a rule, they are replaced.

2. When repairing the clearance adjustment system, before opening the oil lines, unscrew the connecting rod leading to the regulator and set the lever to the "drain" position. Otherwise, there is a risk of injury from the working fluid under high pressure.

Article was obtained from the portal [mercedesman.ru]