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:
Noises from shock absorbers
Shock absorbers are often replaced because of noises
(rumbling, etc.) experienced by the customer. Inspections on the
test rig and in the vehicle have shown that in approx. 70 % of
these cases there is no case for complaint. The replacement was
not justi ...
Description of battery charger -VAS 5900-
The battery charger -VAS 5900- is suitable for charging all
12V batteries supplied by Volkswagen.
Battery charger -VAS 5900-
1 -
Display
2 -&n ...
Removing and installing fog light, Golf
Note
Removal and installation are described for the left side.
Removal and installation on the right side are carried out in
the same way.
Removing
–
Switch off ignition.
...
