Cost-Efficient Operation:SACHS Dampers for CVs.

SACHS dampers ensure the reliable and cost-efficient operation of trucks. They are extremely durable, enable optimal driving comfort, and effectively relieve the strain on vehicles and drivers. At the same time, they offer the highest level of transport safety, even in the case of a sensitive payload.

In addition to conventional dampers, the SACHS portfolio includes driver's cabin dampers, axle dampers for trailers, and suspension springs.

Dampers for CVs should be inspected and, if required, replaced after 250 000 km at the latest.

Damage Evaluation

Leakage and possible causes

If the damper seems to be leaking, it does not necessarily have to be so. A certain amount of "sweating" is normal and even required for lubricating the piston rod seal. Never assess the damper after driving in the rain; the dampers should be dry.

Noise and possible causes

Noise during spring compression does not necessarily come from defective dampers.

Therefore, check:

  • Axle suspension
  • Stabilizer rubbers
  • Caps
  • and, of course, check whether the noise is caused by objects in the trunk.

Rubber joints worn and torn

Rubber joints worn and torn


  • Normal wear due to high mileage.
  • Wear due to sand (abrasive effect).
  • Wear due to driving with ride height too high or incorrectly adjusted air spring level setting.


  • Noises (rattling, knocking)

Thread impressions in bushing

Thread impressions in bush


  • Insufficient tightening torque.


  • Play between bushing and thread crests.

Damage - Impact damage

If the damper is damaged, this was caused by force - through an accident or an installation error.

Therefore, check:

  • Damage on axles and damper anchorage
  • Perform wheel alignment.

FAQ About Dampers

Additional components

Defective dampers lead to faster wear of adjacent components. Therefore, inspect the suspension strut mounts, service kits, and suspension springs during each damper check. When replacing the damper, also replace the suspension strut mounts and service kits.

Transport and storage of dampers

In case of twin-tube dampers, air can enter the working space when transported or stored in horizontal position. The air can be easily and effectively removed by compressing and stretching the damper several times in succession. However, the damper independently vents the air shortly after its installation.

Assembly and anchorage of dampers

When securing the damper (stud joints/suspension strut mounts), please pay attention to the correct alignment of the parts. Check the damper anchorage, steering parts, and rubber-to-metal components during each inspection. In this context, it is advisable to slightly grease the mounting bolts of ring joints. Caution: Protect rubber-to-metal components from grease!

False alarm

Underbody protection and dirt from the road sticking to the damper are often wrongly diagnosed as leakage.

Further information