E 320 CDI (211.026) L6-3.2L DSL Turbo (648.961) (2005)
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Compressor/Pump: Description and Operation
GF32.22-P-4101-03B Compressor Unit, Function
GF32.22-P-4101-03B Compressor unit, function
- with CODE (489a) Airmatic (semi-active air suspension)
Component Identification
The air compressor is driven by the compressor motor (m1). The air to be compressed is sucked out of the vehicle longitudinal member via an air
cleaner and into the chamber underneath the piston. With the downward movement of the piston, the air passes through the inlet valve (e) in the piston
crown into the clearance volume. With the upward movement of the piston, the inlet valve closes and the air is compressed. The compressed air is
forced on via the outlet valve (d) into the air drier (c).
The silicate filling in the drier removes moisture from the air. From the air drier the dehumidified and compressed air then passes from the air drier
into the central reservoir or directly to the suspension struts as required.
The pressure relief valve installed in the compressor unit (y1) is required for discharging air when lowering the vehicle. The discharged air is
conducted through the air cleaner back into the atmosphere. This also cleans the filter.
The air drier is maintenance free. The moisture is delivered back into the air when reducing the pressure.
