Volkswagen Golf Service & Repair Manual: Detecting leaks
External damage can cause leaks in the refrigerant circuit. Because a small leak will involve only small quantities of refrigerant, leaks should be checked for using an electronic leak detector or by introducing a leak detection additive to the refrigerant circuit. Electronic leak detectors can detect leakage rates of less than 5 grams loss of refrigerant per year. The leak detector should be specific to the composition of the particular refrigerant in use. For example, a leak detector for R12 refrigerant is not appropriate for R134a refrigerant because R134a refrigerant has no chlorine atoms to which the lead detector responds.)
Charge factor
There must be space both for liquid and vapour in a
container. As the temperature rises, the liquid expands. The
space occupied by the vapour becomes smaller. Eventua ...
Refrigerant machine oil
Refrigerant machine oil is miscible (approx. 20%–40%
depending on the type of air conditioner compressor and the
quantity of refrigerant) in the refrigerant. I ...
Other materials:
Removing and installing rear wheel housing liner
Special tools and workshop equipment
required
Torque wrench -V.A.G 1783-
Note
Removal and installation are descr ...
Overview of fitting locations - entry and start authorisation system, LHD
vehicles
1 -
Immobiliser reader coil -D2-
Removing and installing
→ Chapter
2 -
Control unit for electronic steering column lock -J764-
Removing and installing
→ Running gear, axles, steering ...
Removing and installing tie-down rings
Note
Removal and installation are described for the left
vehicle side. Follow same instructions for the right side as
appropriate.
Special tools and workshop equipment
required
...
