S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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CAUTION!
The quick acting coupling connectors may be unlocked and opened only if the refrigerant circuit is empty.
11
Cap
‹› With seal
‹› Always screw on
12
Service Connection - High Pressure Side
‹› Different versions with primary sealing valve or with Schrader valve depending on refrigerant line, distinguishing characteristics Air
conditioning - refrigerant R134a
‹› For the service station for measuring pressures, emptying and charging refrigerant circuit A/C system - with refrigerant R134a.
‹› Depending on engine version, it may be necessary to remove some components in order to be able to connect to service coupling of the service
station.
CAUTION!
Only remove service connections when the refrigerant circuit is empty. The connection does not have a valve.
‹› Depending on the allocation of the service connection an on the refrigerant line, and on the version of the vehicle, it may be necessary to
remove the additional reinforcement on the left suspension strut dome so that the service coupling of the service station can be connected (for
example, on the Audi Q5).
13
Refrigerant Pipe with Inner Heat Exchanger
‹› In this refrigerant pipe, the flowing fluid warm refrigerant on the high pressure side is delivered into the low pressure side as flowing, vapor,
cold refrigerant to increase the efficiency of the A/C system.
14
Expansion valve
15
Evaporator
16
Refrigerant Line Quick Acting Coupling - Low Pressure Side
CAUTION!
The quick acting coupling connectors may be unlocked and opened only if the refrigerant circuit is empty.
17
Cap
‹› With seal
‹› Always screw on
18
Service Connection - Low Pressure Side
‹› Different versions with primary sealing valve or with Schrader valve depending on refrigerant line, distinguishing characteristics.
‹› For the service station to measure pressures and to discharge the refrigerant circuit.
‹› Depending on engine version, it may be necessary to remove some components in order to be able to connect to service coupling of the service
station.
CAUTION!
Only remove service connections when the refrigerant circuit is empty. The connection does not have a valve.
‹› Depending on the allocation of the service connection an on the refrigerant line, and on the version of the vehicle, it may be necessary to
remove the additional reinforcement on the left suspension strut dome so that the service coupling of the service station can be connected (for
example, on the Audi Q5).
