Belt Pulley, Removing And Installing At Compressor, Version "2 - Audi Q7 2007 Repair Manual

Audi Q7 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 04.2013
4.5 Belt Pulley, Removing and Installing at
Compressor, Version "2"
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 .
The compressor can be removed and installed at the bracket
♦
without opening the refrigerant lines.
Currently, the A/C compressor with belt pulley version "2" is
♦
installed in vehicles with 6-cylinder gasoline 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 the engine and the country, different A/C com‐
♦
pressors are installed (6-, 8- or 12-cylinder gasoline or diesel
engines). 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
Belt Pulley, Removing
– 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 tension on ribbed belt and remove it. Refer to ⇒ En‐
gine Mechanical; Rep. Gr. 13 ; Cylinder Block, Belt Pulley
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 .
42
Rep. Gr.87 - Air Conditioning
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