VW Golf manuals

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 decoupler pulley with freewheel‏
General description There are different versions of decoupler pulleys with freewheel‏. Before removing the decoupler pulley with freewheel, it must be determined which special tool must be used. ...

Removing and installing air distribution flap control motor -V428-, RHD vehicles
Special tools and workshop equipment required Vehicle diagnostic tester First carry out the following work: –  Switch off all electrical consumers. –  ...

Removing and installing engine mountings
Removing –  Disconnect electrical connector -1-.     –  Move clear hose -2- from activated charcoal filter. –  Using a screwdriv ...

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