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 – central locking
1 -
Coupling station
Fitting location: right A-pillar
To separate connections, release bellows at pillar
2 -
Onboard supply control unit -J519-
Location: Under dash panel on driver side
Removing
→ Electrical syste ...
Display and indicator lamps
Fig. 176 In the instrument cluster display:
lane departure warning system displays.
First read and observe the introductory information
and safety warnings Displays
Display fields :
Lane marking detected. System not regulating.
Lane marking detected. System is regulating.
...
Removing and installing mounting bracket for backrest release mechanism
Special tools and workshop equipment
required
Special pop rivet pliers -V.A.G 1753B-
Hand drill
Safety goggles
...