Audi Q7 2007 Repair Manual page 259

Note
There are different compressors, depending on production
♦
time period and on engine. Refer to
⇒ "3 Refrigerant Circuit", page 12
Coat the O-ring seals lightly with refrigerant oil prior to instal‐
♦
lation. Refer to
⇒ "3.6 Refrigerant Circuit O-Ring Seals", page 26
Start engine only after reassembling refrigerant circuit and if
♦
possible only with refrigerant circuit charged.
Before or during the installation of the A/C compressor, refer to
⇒ A/C System with Refrigerant R134a; Rep. Gr. 87 ; Refrigerant
Circuit Components, Replacing (A/C System with Refrigerant
R134a; Refrigerant Circuit Components, Replacing).
♦ Pay attention to the tightening specifications; refer to
⇒ "3.7 Compressor on Bracket, Removing and Installing",
page 27 (for A/C compressor, 6-Cylinder, removing and in‐
stalling), refer to
⇒ "16 Compressor, Removing and Installing (Vehicles with 8-
Cylinder Engine and 12-Cylinder TDI Engine)", page 277
A/C compressor, 8-Cylinder FSI, removing and installing), re‐
fer to
⇒ "16.2 Compressor, Removing and Installing (Vehicles with
8-Cylinder TDI Engine)", page 277
Cylinder TDI, removing and installing), refer to
⇒ "16.3 Compressor, Removing and Installing (Vehicles with
12-Cylinder TDI Engine)", page 280
Cylinder TDI, removing and installing), and refer to
⇒ page 250 (for refrigerant line, a/c compressor, removing and
installing).
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
♦ Replace the O-Ring seals at the opened connection locations.
with respect to the correctness of information in this document. Copyright by AUDI AG.
Refer to ⇒ "3.6 Refrigerant Circuit O-Ring Seals", page 26
For the correct version, refer to the Parts Catalog.
– During and after installation of a new compressor or after add‐
ing fresh refrigerant oil to compressor on an already used
compressor (for example, after flushing the refrigerant circuit),
rotate compressor by hand approximately 10 rotations before
installing belt or before tightening driveshaft to prevent com‐
pressor damage.
– Following attachment, check routing of refrigerant pipes. They
must be inserted in holders provided and not make contact
with other components.
– Install remaining components.
If it should be necessary to start engine with refrigerant circuit
discharged, observe notes
⇒ "21 A/C System, Operating after Filling Refrigerant Circuit",
page 332 .
– Evacuate and refill the refrigerant circuit. Refer to ⇒ A/C Sys‐
tem with Refrigerant R134a; Rep. Gr. 87 ; Refrigerant Circuit
(A/C System with Refrigerant R134a; Refrigerant Circuit, Us‐
ing Service Station).
– Operate the A/C system after filling the refrigerant circuit. Re‐
fer to
⇒ "21 A/C System, Operating after Filling Refrigerant Circuit",
page 332 .
Heating, Ventilation and Air Conditioning - Edition 04.2013
and the Parts Catalog.
.
(for A/C compressor, 8-
(for A/C compressor, 12-
(for
.
15. Refrigerant Circuit, Servicing
Audi Q7 2007 ➤
253