Air Supply Unit - Audi A6 242 Service Manual

Self-levelling suspension, A6
The air supply unit
The following components are contained in a
metal box inside the air supply unit:
– the V66 compressor with integrated air
dryer and discharge valve N111,
– transverse check valves N150 and N151,
– control unit J197
– and the relay for compressor J403
The components listed above are housed in a
special polyurethane foam (PUR foam)
insulation mat to ensure vibration and
acoustic damping. The insulation mat is
designed to fix the positions of the individual
components within the metal box.
Discharge valve N11
Compressor V66
242_038
42
Plastic box with control system J197
Transverse check valves N150 and N151
Specially adapted rubber bushes prevent any
significant vibration transfer to the bodywork.
Ensure that rubber bushes are installed
correctly!
Both halves of the metal box housing are
fitted with a seal. This seal is essentially for
soundproofing. As the compressor sucks and
vents the air out of the metal box, it is
designed to allow a certain degree of leakage.
Rubber bush