Removing and attaching pulley (without air conditioning system magnetic clutch N25), “Denso” air conditioner compressor, version “2” — AUDI

Removing and attaching pulley (without
air conditioning system magnetic clutch
N25
),
“Denso”
air conditioner compressor, version
“2”
Note
Observe notes on renewing pulley
Chapter
.
Pulley is made of plastic, is sensitive to impact and should be treated with special care.
If overload protection device of drive plate
C
has been triggered, remove circlip
A
and then prise drive plate off pulley
D
.
Circlip
A
with a vulcanised rubber disc is fitted to minimise noise
Chapter
and
Electronic parts catalogue
.
Removing
Perform preparations
Chapter
“
Preparations for renewing pulley
”
.
Remove poly V-belt
Rep. gr.
13
Cylinder block (pulley end); Removing and installing poly V-belt
.
Use e.g. a small screwdriver or long-nose pliers to carefully remove circlip
A
(with vulcanised rubber disc
Chapter
), taking particular care not to damage pulley.
Hold drive shaft
B
of air conditioner compressor using a standard hexagon socket wrench (commercially available) and turn drive plate
C
with pulley
D
in direction of arrow
E
(tightening torque: 35 Nm).
Detach drive plate
C
.
Remove circlip
A
.
Detach pulley
B
.
Note
If the pulley cannot be detached with the air conditioner compressor in position, detach the air conditioner compressor with the refrigerant lines connected:‎ 4-cyl. engine
Chapter
, 6-cyl. TDI engine
Chapter
“
Detaching air conditioner compressor from holder/attaching - vehicles with 6-cyl. engine
”
. On vehicles with a 6-cyl. FSI/TFSI engine the air conditioner compressor has to be removed
Chapter
“
Removing and installing air conditioner compressor - vehicles with 6-cyl. engine
”
.
Installing
Note
Renew circlip
A
.
Clean air conditioner compressor flange before attaching pulley.
When fitting circlip
A
, take care not to bend it open more than necessary.
Install pulley
B
.
Ensure that circlip
A
is fitted correctly. Bevelled side
C
faces away from air conditioner compressor (flat side faces compressor).
Insert rubber elements
D
into pulley
B
as shown.
Before installing drive plate, coat rubber elements
D
slightly with lubricant (e.g. tyre fitting paste or soap solution).
Insert drive plate
C
in rubber elements
D
(refer to top illustration) until it makes contact with shaft of air conditioner compressor
B
.
Screw drive plate
C
onto compressor shaft
B
by turning in direction of arrow
F
.
Tighten drive plate
C
(via pulley
D
) to 35 Nm by turning in direction of arrow
F
with a commercially available strap wrench (with fabric strap); hold compressor shaft
B
in position with a standard hexagon socket wrench (commercially available).
Fit circlip
A
(with vulcanised rubber disc).