Checking compression
Special tools and workshop equipment
required
Spark plug socket and extension -3122 B-
Compression tester -V.A.G 1763-
...
Air conditioner compressor regulating valve -N280
The regulating valve is fitted to the air conditioner
compressor. It is activated by the operating and display unit
for Climatronic air conditioning system -E87- or the Climatronic
control unit -J255- The regulating valve influences the pressure
in the l ...
Vehicle data sticker
Explanation regarding “PR numbers” on vehicle data sticker
Various types of running gear are installed depending on
engine and equipment level. These are identified by the PR
numbers.
The PR numbers are critical in d ...