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 sun visor
Note
Removal and installation is described for the sun visor
on driver side. Follow same instructions for the front passenger
side as appropriate.
Special tools and workshop equipment
required
&n ...
Checking radial and lateral run-out on wheel rim
–
Attach rim to wheel balancing machine.
–
Use the centring system for wheel balancing machines -VAS
5271-.
–
Preload tyre gauge approx. 2 mm.
–
Tu ...
Removing and installing condensation drainage (LHD)
Removing
–
Remove right centre console trim in footwell
→ General body repairs, interior; Rep. gr.68.
Risk of damage to airbag control unit. Connectors may corrode if
moisture enters.After disconnecting, ...
