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Starting up air conditioner after installing compressor > < Removing (shaft-driven compressor)

A4 Cabriolet Mk2

Installing
Installing
Before fitting compressor → Air conditioner with refrigerant R134a
  Note
The compressor removed contains an indeterminate amount of refrigerant oil. Attention is therefore to be paid to notes on compressor replacement → Air conditioner with refrigerant R134a.
–  Install compressor drive shaft (in drive gear) and check both proper attachment and corresponding socket → Chapter.
   
–  If necessary, remove bushings -C- from compressor holder.
–  Thoroughly clean contact surfaces -A- and -B- at holder (as well as contact surfaces at compressor).
–  Fit bushings -C- in compressor holder.
  Note
Pay attention to correct positioning of bushings -C- as well as clean contact surfaces. Incorrectly fitted bushings or dirty/damaged contact surfaces could lead to misalignment between compressor and engine. In the course of operation, misalignment results in drive shaft or compressor damage.
–  Check type of seal at connections and refrigerant pipes (must be designed for same type of seal) → Chapter and → Parts List
  A87-0628
–  Attach compressor with bolts -D- (and washers -E-) to holder (tightening torque 25 Nm).
–  Attach the refrigerant pipes to the compressor (tightening torque of bolts -A- 10 Nm for bolts with M6 thread and 25 Nm for bolts with M8 thread). For dimensions of O-rings -B- and -C- and further information, refer to → Chapter.
  A87-0629
–  Following installation of a new compressor or after adding fresh refrigerant oil to compressor (e.g. after blowing out refrigerant circuit), give compressor approx. 10 turns by hand by way of compressor drive unit -B- in direction of arrow -C- before tightening drive shaft so as to avoid compressor damage.
–  Tighten drive shaft. Use open-ended wrench to hold compressor drive shaft -A- in position and turn compressor drive unit -B- in direction of arrow -D- (tightening torque 60 Nm).
  Note
  A87-0622
t  Drive shaft -A- is not to be turned.
t  After fitting drive shaft -A-, check installation position of socket -E-.
t  The grommet -E- is secured with a clamp at the flange of the power steering pump to stop it slipping (introduction of clamp at factory as of Model Year 2005, retrofit clamp if necessary) → Parts catalogue.
–  Re-install remaining components removed.
–  Evacuate and fill refrigerant circuit. → Air conditioner with refrigerant R134a
–  Start up air conditioner after installing compressor → Chapter
  A87-0622

Starting up air conditioner after installing compressor > < Removing (shaft-driven compressor)