Checking/Replacing Compressor Drive Unit - Audi Air conditioning 2003 A8 Workshop Manual

13.7 Checking/replacing compressor drive
unit
Note
If the drive plate overload safeguard has been tripped, check the
freedom of movement of the compressor before replacing the
drive unit. Replace the entire compressor if it is stiff.
1 - Compressor drive shaft
❑ Check; after tightening
screw connection, drive
shaft must engage
snugly in splines of drive
gear ⇒ page 163
❑ Tightening torque 60
Nm
❑ Unfastening and tight‐
ening ⇒ page 162
❑ Removing and installing
⇒ page 163
❑ Lubricate the drive gear
splines with grease -G
000 100- for example ⇒
Electronic parts cata‐
logue .
2 - Hexagon socket head bolt
❑ Tightening torque 10
Nm
3 - Drive plate
❑ With overload safe‐
guard, tripped in the
event of excessive tor‐
que (e.g. stiff compres‐
sor) and drive shaft just
free-wheels without
driving compressor
❑ Checking concentricity
and adjusting
⇒ page 164
❑ Detaching/attaching
⇒ page 163
4 - Drive plate
❑ Screwed to compressor
drive shaft
❑ With overload safeguard, tripped in the event of excessive torque (e.g. stiff compressor) and drive shaft
just free-wheels without driving compressor
❑ Tightening torque 30 Nm
❑ Detaching/attaching
5 - Rubber element
❑ Isolates drive unit, damps vibration and noise
❑ On installation, moisten rubber elements slightly with soap solution for example to provide lubrication
❑ Detaching/attaching
6 - Spacer
❑ Genuine spacer must be fitted
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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.
⇒ page 164
⇒ page 164
Audi A8 2003 ➤
Air conditioning - Edition 09.2010
13. Servicing refrigerant circuit
161