Audi Q7 2007 Repair Manual page 253

❑ Coat the O-ring seals on sealing cap lightly with refrigerant oil before installing. Refer to
⇒ "3.6 Refrigerant Circuit O-Ring Seals", page 26
❑ Replace the o-ring on the cap. For the correct version, refer to the Parts Catalog.
❑ Dryer cartridge, removing and installing. Refer to
⇒ "15.9 Dryer Cartridge, Removing and Installing ", page 264
10 - Connection in Refrigerant Line
❑ Depending on version and engine of the vehicle, these connection points may be present at different
locations on the refrigerant lines.
WARNING
♦ Bolts of the connection
points must only be loos‐
ened when refrigerant
circuit has been dis‐
charged.
❑ O-Ring seals, replacing. For the correct version, refer to the Parts Catalog.
❑ For loosening and assembling connection points of refrigerant lines, refer to
⇒ "15.8 Connection Points of Refrigerant Lines, Loosening and Assembling ", page 262
❑ From MY 2012 on vehicles with a 6-cylinder TDI engine, an additional chafe protection is installed on
the low pressure refrigerant line as a running change. Make sure that the installation position for the
chafe protection is correct. Refer to
⇒ "15.3 Refrigerant Lines, Disconnecting from Compressor and Connecting", page 250
11 - High Pressure Side Service Connection
WARNING
Service connections
(connection is not equip‐
ped with a valve) or the
valves installed in them
must only be removed
when refrigerant circuit
has been discharged.
❑ There are different versions (with primary sealing valve or with Schrader valve) depending on the refrig‐
erant line. For distinguishing characteristics, refer to ⇒ A/C System with Refrigerant R134a; Rep. Gr.
87 ; A/C System General Information (A/C System with Refrigerant R134a; A/C System General Infor‐
mation).
❑ For measuring, discharging and filling, refer to ⇒ Refrigerant R134a, Servicing; Rep. Gr. 87 ; Refrigerant
Circuit (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).
❑ Depending on engine version, it may be necessary to remove different components in order to be able
to connect to service coupling of the service station.
❑ To remove and install the service connection or the valve insert with the refrigerant circuit empty, use,
for example, an adapter from the Socket for A/C Valves - T10364- .
12 - Cap
❑ With seal
❑ Always screw on
13 - Connection with Valve
❑ Different installation locations depending on version and engine of the vehicle.
14 - High Pressure Sensor - G65-
❑ Removing and Installing. Refer to
⇒ "3.3 High Pressure Sensor G65 , Removing and Installing", page 18
❑ Signal, checking. Refer to
15 - Front Expansion Valve
❑ For evaporator in front A/C unit (A/C unit under instrument panel)
❑ There are different versions. Refer to the Parts Catalog.
Heating, Ventilation and Air Conditioning - Edition 04.2013
⇒ "3.4 High Pressure Sensor G65 , Checking Pressure Signal", page 19
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
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15. Refrigerant Circuit, Servicing
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