VW Golf manuals

Volkswagen Golf Service & Repair Manual: Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / Detecting leaks in refrigerant circuit / Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796

  Note
Small leaks can be detected with, for example, an electronic leak detector.
–  Evacuate refrigerant circuit using an air conditioner service station → Chapter.
  Note
If a larger leak is detected during the evacuation process, determine cause and rectify as described → Chapter.
If during the evacuation process no leak is detected or a very small leak is detected that but cannot be located, proceed as follows → Chapter.
Refrigerant gas is quickly dispersed by air motion. Therefore drafts must be avoided during a search for leaks.
If the refrigerant circuit is completely empty, charge with about 10% of refrigerant capacity (sticker R134a or vehicle-specific workshop manual).
Leak detection:
–  Prepare leak detector for operation according to its operating instructions.
–  Always hold probe tip under location of suspected leak.
   
If the rate of clicks rises or a howl occurs, depending on model, a leak has been found (see operating instructions for leak detector).
 

Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796

Leak detection in refrigerant circuit using compressed air or nitrogen
  Note A leak in the refrigerant circuit can be detected, for example, by pressurising the circuit to a maximum of 15 bar using cleaned and dr ...

Detecting leaks in refrigerant circuit using leak detecting system -VAS 6196- or leak detecting system -VAS 6201- or a later model
  Note Small leaks can be detected with, for example, an UV leak detector additive. –  Evacuate refrigerant circuit using a ...

Other materials:

Safety precautions when working in the vicinity of high-voltage components
Risk of death due to high voltage The high voltage system carries high voltage. If high-voltage components or high-voltage lines become damaged, there is a risk of severe or fatal injury due to electric shock. –  Carry out visual inspection of high ...

Checking fuel pressure sender -G247-
Special tools and workshop equipment required Vehicle diagnostic tester     Pressure sensor tester -VAS 6394- Test instrument adapter/DSO (3-pin) -VA ...

Removing and installing front footwell light -K268-, driver side
Removing     –  Using a flat screwdriver, press in locking lug -1- at point indicated by arrow -A-. –  Lever out footwell light -2-. –& ...

© 2016-2025 Copyright www.vwgolf.org