Assembling Flushing Circuit Adapter

Assembling Flushing Circuit Adapter

- Various adapters which are required to connect the A/C service station to the refrigerant circuit for flushing and to bridge the removed fluid reservoir or reservoir and expansion valve (specific to vehicle) are in the following table.
- Using a charge hose with 5/8 -18 UNF connections (short version, e.g. charge hose VAS 6338/31 ), connect the two adapters (contained in VW/Audi passenger vehicle set adapter chest VAS 6338/1 ) which have been installed for the removed reservoir or fluid reservoir.
- If a flushed refrigerant circuit is not to be reassembled immediately after the flushing, leave the adapters on the connections and seal the connections on the adapters with sealing caps VAS 6338/30 (from VW/Audi passenger vehicle set adapter chest VAS 6338/1 ).
- Depending on the version of the A/C compressor and on the time period of production, various connecting and sealing technologies can be found on the refrigerant circuit.







Block or screw connections

Screw connection - A -

Block connection - B -







Block connections with different types of seal

Block connection with radially sealed connection - A - (with plastic or metal guide - B - )

- Block connection with axially sealed connection - C -

Passat 1997; Passat 2006