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 coolant temperature sender at radiator outlet -G83
Removing
Engine cold
–
Briefly open cap of coolant expansion tank
-arrow- in order to release
residual pressure in the cooling system, then tighten the cap
...
Assembly overview - Lambda probe
Note
New lambda probes are coated with an assembly paste. This
paste must not get into the slots on the Lambda probe body.
In the case of a used Lambda probe grease only the thread
with high-temperature paste. This p ...
Removing and installing window regulator
Special tools and workshop equipment
required
Note
Removal and installation are described only for the left
window regulator. Removal and installa ...
