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:
Checking holding pressure, engine code CWVA
Special tools and workshop equipment required
Removal wedge -3409-
Pressure tester -VAS 6550-
Connector cable -VAS 6550/3-3-
Connector cable -VAS 6550/3-4-
Vehicle diagnostic tester
...
Overview of fitting locations – adaptive cruise control, variant 2
1 -
Dash panel insert -KX2-
With control unit in dash panel insert -J285-.
Removing and installing
→ Chapter
2 -
Front bumper carrier
3 -
Retaining plate
...
Aquaplus system, uni (solid-colour) and metallic colours
Designation:
Uni (solid-colour) waterborne mixing paint -LWM 075 ...-
Metallic waterborne mixing paint -LWM 076 ...-
Uni (solid-colour) waterborne base coat -LUW/LWG 038 ...-
...
