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:
Overview of fitting locations - front keyless entry system, RHD vehicles
1 -
Front passenger door exterior handle
With front passenger door exterior handle contact sensor -G416-.
Removing and installing
→ Chapter
With front passenger side aerial for entry and start system -R135-.
Removing ...
Assembly overview – wiper motor and wiper frame
Note
The illustration shows fitting locations for LHD vehicles. Fitting
locations for RHD vehicles are similar.
1 -
Wiper motor
Removing and installing
→ Chapter
2 -
Bolts
...
Draining and filling coolant
Special tools and workshop equipment required
Refractometer -T10007 A-
Drip tray for workshop hoist -VAS 6208-
Hose clip pliers -VAS 6340-
Cooling system charge unit -VAS 6096-
Adapter for cooling ...
