Volkswagen Golf Service & Repair Manual: Retrofitting refrigerant circuit from R12 refrigerant to R134a refrigerant

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / Refrigerant circuit / Retrofitting refrigerant circuit from R12 refrigerant to R134a refrigerant

Chlorofluorocarbon (CFC) is no longer used as a refrigerant in the automotive sector.

R12Converting refrigerant circuits from refrigerant R12 to refrigerant R134a and repairing the converted circuits.

→ Repair manual for air conditioning systems with refrigerant R12 parts 2 and 3. This workshop manual is only available as a hard copy.

Important repair notes on air conditioning

Air conditioning systems designed for refrigerant R12 must not be charged with refrigerant R134a until specific conversion measures have been performed →& ...

Working with the air conditioner service station

Caution If there is evidence to suggest that chemical substances have been added in the vehicle to seal leaks, ...

Other materials:

Sealing and inflating tyres
First read and observe the introductory information and safety warningsSealing a tyre Unscrew the cap from the tyre valve. Use the valve core extractor to screw the valve core out of the tyre valve. Place the core on a clean surface. Shake the tyre filler bottle vigorously up a ...

Assembly overview - Lambda probe
Note New lambda probes are coated with an assembly paste. This paste must not get into the slots on the Lambda probe body. In the case of a used Lambda probe grease only the thread with high-temperature paste. This p ...

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 dried compressed air or nitrogen → Chapter. If the leak is large, the leakage point ...