Belt Pulley, Removing And Installing At Compressor, Version "1 - Audi Q7 2007 Repair Manual

4.3 Belt Pulley, Removing and Installing at
Compressor, Version "1"
Note
If overload safeguard of pulley triggers, check compressor for
♦
ease of motion before replacing the pulley, replace it com‐
pletely if compressor moves with resistance.
The function of overload protection for pulley is described, for
♦
example, in the Self Study Program.
To remove belt pulley, it depends on engine version if it is
♦
necessary to remove compressor from engine. Refer to
⇒ "3.7 Compressor on Bracket, Removing and Installing",
page 27 .
Currently, A/C compressors with belt pulley version "1" are
♦
being in vehicles with a 6-cylinder TDI engine. Refer to the
Parts Catalog.
On vehicles with a 6-cylinder engine, the compressor can be
♦
removed and installed at the bracket without opening the re‐
frigerant lines. Refer to
⇒ "3.7 Compressor on Bracket, Removing and Installing",
page 27 .
Mark direction of rotation of ribbed belt using chalk or felt-tip
♦
marker before removing. Running a used belt in the opposite
direction could destroy it.
Depending on engine and market version, different compres‐
♦
sors are installed (6-, 8-, or 12-cylinder engine, gasoline or
diesel engine). Refer to the Parts Catalog.
Depending on the version of the engine, it may be necessary
♦
to bring the lock carrier -C- into the service position (pulled
approximately 10 cm forward) so there is enough space to re‐
move the belt pulley. Refer to ⇒ Body Exterior; Rep. Gr. 50 ;
Body Front
– Remove the noise insulation on vehicles with a 6-cylinder en‐
gine or a 12-cylinder TDI engine. Refer to ⇒ Body Exterior;
Rep. Gr. 66 ; Underbody Trim Panels .
– Move the lock carrier -C- into the service position (for example,
on a 12-cylinder TDI engine). Refer to ⇒ Body Exterior; Rep.
Gr. 50 ; Body Front .
– Release the tension on the ribbed belt and remove it. Refer to
⇒ Engine Mechanical; Rep. Gr. 13 ; Cylinder Block, Belt Pul‐
ley Side
– If necessary, remove the power steering pump (only on vehi‐
cles with a 6-cylinder gasoline engine). Refer to ⇒ Suspen‐
sion, Wheels, Steering; Rep. Gr. 48 ; Power Steering Pump,
Hydraulic Pipes and Reservoir .
Heating, Ventilation and Air Conditioning - Edition 04.2013
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
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi Q7 2007 ➤
37
4. Compressor Pulley