Checking condition of spring struts - AR32.25-P-1017-02I
To ensure that the AIRmatic functions satisfactorily it is necessary to check the spring struts for damage before installing.
The boot must not be damaged (e.g. cracks).
Front axle:
Depressurized or low-pressure spring struts can be reliably recognized (not installed yet) by the insufficient length, as the tension stop spring in the shock absorber shortens the struts against an internal pressure which is too low.
It is therefore important to measure the length of the spring struts just before assembly.
The following limits apply to fitment:
Shortest length from the center of the weld seam to the end face at the bottom of the shock absorber: a ≥ 608 mm.
In addition it must be checked whether the crooked upper section of the spring strut can be tilted the other side and snapped into position at the same time. If this is not the case, the spring strut is scrap and must be replaced.
Spring struts which are too short are scrap and must not be pressurized and installed in vehicles under any circumstances.
Rear axle:
The rear spring struts must not be installed if the outer guide is unstable, i.e. there is a hard "metallic" stop when the outer guide is moved to and fro (arrows).