Volkswagen Group of America Inc. Technical Service Bulletin 2048039/21: 87-18-08 Air Conditioning; Cleaning of the R1234yf Refrigerant Circuit (U.S. Only)

This technical service bulletin describes the process for cleaning the R1234yf refrigerant circuit after an air conditioning system component failure. The recommended procedure includes recovering the refrigerant, flushing the circuit, and reinstalling the system components.

Precautions

The bulletin stresses the importance of flushing the refrigerant circuit to maintain the air conditioning system’s operating efficiency. It also notes that any replacement of the A/C compressor must be completed with the A/C flush procedure to ensure the proper amount of oil is re-introduced into the refrigerant system.

Procedure

The procedure involves several steps, including disconnecting the service hoses, installing the approved R1234yf servicing machine, removing the receiver drier, and installing the flush plate. The bulletin also provides specific instructions for Atlas models from 2018-2021, including the removal of the front bumper.

Manual:

Download: Volkswagen Group of America Inc. Technical Service Bulletin 2048039/21: 87-18-08 Air Conditioning; Cleaning of the R1234yf Refrigerant Circuit (U.S. Only)

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