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:

Priming plastic materials
Adhesion promoter (transparent) Designation: Adhesion promoter -ALO 822 000 10- (transparent) Issued 06/2011 Product description This transparent adhe ...

Cleaning battery clamp and battery terminal
Special tools and workshop equipment required VAG 1331 Note The use of penetrating fluid, contact spray or grease etc. is prohibited since the missing adhesion ...

System limits
First read and observe the introductory information and safety warnings The area monitoring system (Front Assist) has physical and system-related limits. The driver may therefore feel that, in certain circumstances, some Front Assist reactions occur unexpectedly or with a delay. You should t ...