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:

Removing and installing washer fluid reservoir
Special tools and workshop equipment required Drip tray   Note Removal and installation of washer fluid reservoirs with headlight washer system are described. Removal and installation of washer f ...

Charging refrigerant circuit using air conditioner service station
  WARNING High-voltage on high-voltage system. Danger of electric shock on air conditioner compressor! Models with a high-voltage system: now de-energise the high-voltage system ...

Removing and installing control unit and hydraulic unit, RHD vehicles
Special tools and workshop equipment required Torque wrench -V.A.G 1331- Torque wrench -V.A.G 1410- Brake pedal depressor -V.A.G 1869/2-         Sealing plugs, assemb ...

© 2016-2020 Copyright www.vwgolf.org