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Volkswagen Golf Mk7 Service & Repair Manual: Retrofitting refrigerant circuit from R12 refrigerant to R134a refrigerant

Chlorofluorocarbon (CFC) refrigerant is no longer used in the automotive sector — this page covers converting older R12 circuits to R134a and repairing the converted system afterward.

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.
   

    Questions & answers

    Retrofitting refrigerant circuit from R12 refrigerant to R134a refrigerant — Volkswagen Golf Mk7

    What does an R12-to-R134a conversion involve?
    Replace the drier/receiver, seals and compressor oil. Fit R134a-compatible service ports. Label the system. Evacuate and recharge with R134a.
    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, ...

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