Suspension: Description and Operation

GF32.25-P-5101RT Suspension strut component description
- with CODE (489) Airmatic (air suspension with level adjustment and adaptive damping system ADS)
- up to model year 08

Component Identification:

Located on the rear axle, separate to the air suspension strut, is the rear shock absorber with the left rear axle damping valve unit (Y53).

Function described using example of a front axle suspension strut.
The vehicle weight is borne by the compressible air enclosed in the air bellows of the suspension struts. The air is located in the air chamber. The air spring bellows designed as a sleeve air spring is made of rubber. In the event of dynamic loading while driving, the air bellows unrolls parallel to the McPherson axle and thus ensures the required spring travel.

The suspension strut rolling zone is sealed to the outside using a protective boot to protect against dirt. Lifting/lowering the vehicle level takes place by increasing/reducing the air pressure in the air chamber, which results in a shortening/lengthening of the front axle suspension strut.