Refrigerant Lines, Disconnecting From Condenser And Connecting - Audi Q7 2007 Repair Manual

Audi Q7 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 04.2013
– Remove the noise insulation (not necessary on vehicles with
a 8-cylinder TDI engine). Refer to ⇒ Body Exterior; Rep. Gr.
66 .
– Disconnect the connector -A-.
– Check the refrigerant circuit pressure using, for example, a
pressure gauge from the A/C Service Station. Refer to ⇒ A/C
System with Refrigerant R134a; Rep. Gr. 87 ; Refrigerant Cir‐
cuit (A/C System with Refrigerant R134a; Refrigerant Circuit,
Using Service Station).
WARNING
Only remove Refrigerant Temperature Sensor - G454- when
pressure in refrigerant circuit is the same or less than the am‐
bient pressure.
– Using a wrench, counterhold refrigerant line at hex head -D-
and remove Refrigerant Temperature Sensor - G454- -B- from
refrigerant line of A/C compressor.
Installing
Install in reverse order of removal. Note the following:
.
– Replace the O-ring seal -C-. Refer to the Parts Catalog.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
– Coat the O-ring seal -C- lightly with refrigerant oil before in‐
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
stalling. Refer to
with respect to the correctness of information in this document. Copyright by AUDI AG.
⇒ "3.6 Refrigerant Circuit O-Ring Seals", page 26
– When installing, make sure that O-ring seal -C- is positioned
correctly in groove of Refrigerant Temperature Sensor - G454-
-B-.
– Using a wrench, counterhold refrigerant line at hex head -D-
and tighten Refrigerant Temperature Sensor - G454- -B- to 8
Nm.
Note
Position the wrench only on the hex when tightening the Refrig‐
erant Temperature Sensor - G454- .
15.6 Refrigerant Lines, Disconnecting from
Condenser and Connecting
Note
Different versions of the condenser are available depending on
the vehicle version. Refer to the Parts Catalog.
Remove the refrigerant lines
– Discharge the refrigerant circuit. Refer to ⇒ A/C System with
Refrigerant R134a; Rep. Gr. 87 ; Refrigerant Circuit (A/C Sys‐
tem with Refrigerant R134a; Refrigerant Circuit, Using Service
Station).
– If necessary, remove the noise insulation (refer to ⇒ Body
Exterior; Rep. Gr. 66 ) and components which may obstruct
256
Rep. Gr.87 - Air Conditioning
.