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:
Important notes for working with the air conditioner service station
To operate the air conditioner service station -VAS 6007A-,
the following must be observed (also applies to other and latest
available air conditioner service stations).
→ Workshop equipment
The fitted f ...
Identification markings on the tyre sidewall, standard tyres
Example: Continental ContiPremiumContact 2
1 -
Size code
e.g. 205/55 R 16
→ Anchor
2 -
Position of TWIs (Tread Wear Indicators)
3 -
Manufacturer (trade name)
...
Cleaning windows and exterior mirrors
First read and observe the introductory information
and safety warnings Cleaning windows and exterior mirrors
Moisten the windows and exterior mirrors with commercially available, alcohol-based
glass cleaner.
Dry the glass surfaces with a clean chamois leather or a lint-free cloth. Chamois ...
