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Notes on AIRmatic - AH32.22-P-1000-02T

MODEL 211.0/2, 219 with CODE 489 (Airmatic (semi-active air suspension)) 

NOTES

Shown on model 211.0 

Fig 1: Identifying Airmatic Suspension Components (Shown On Model 211.0)
G10037520Courtesy of MERCEDES-BENZ USA

Shown on model 211.0 

Fig 2: Identifying Airmatic Suspension Components (Shown On Model 211.0)
G10037521Courtesy of MERCEDES-BENZ USA
NOTE: The following points must be observed when working on the AIRmatic:
  • The components or the complete system must not be emptied by unscrewing the pressure lines. Before removal, depressurize AIRmatic components (air suspension struts, air springs, damping valve units, central reservoir) using STAR DIAGNOSIS. Empty rear air springs (41) completely; if necessary, empty complete system.
  • Soiled pressure line connections must be cleaned before unscrewing. Do not use any cleaning agents or solvents, as they can damage the pressure lines. Seal pressure lines and connections on the components using blind plugs.
  • Air springs (41) must not be twisted, as this can lead to wrinkle formation in the air spring bellows and cause irreparable damage to it.
  • Only use flare nut wrenches or special tools to unscrew the pressure lines.
  • Air suspension struts (40) and air springs (41) which have been removed or that are not firmly bolted must not be filled with compressed air and must not be pushed together.
  • If the vehicle is idle for a longer time, position the wheels straight ahead as any pressure loss in the system may cause the vehicle to sink and the body will rest on the wheels.
  • The connector hoses of the air springs (41) to the additional volume reservoirs (41p) must not be detached as this can lead to leaks. This is why it is necessary to remove the rear axle for the removal of the air springs (41). The folds in the protective boots of the air springs (41) must be properly formed and reveal no dents (intrusions), since during travel the air spring bellows could rub on them and cause premature failure of the air springs (41).
  • When filling the air springs (41) observe the proper filling procedure.
  • Between installing the air suspension struts (40) or the air springs (41) and filling the system, do not place any load upon the air suspension struts (40) or air spring (41) (there must be no spring movement).
  • Before driving into washing facilities systems, onto pits and lifting platforms or over very rough road surfaces, the vehicle level button must first be set to "raised".