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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (Refrigerant R134A Servicing) (2 Of 2) >> 87 Air Conditioning >> A/C Service Station, Connecting >> Service Station, Connecting With No Connection On Low- And High Pressure Side Of Refrigerant Circuit >> Service Station, Connecting With A/C Adapter Set :VAG1786 To Refrigerant Circuit

Service Station, Connecting With A/C Adapter Set :VAG1786 To Refrigerant Circuit

Fig 1: Connecting With Air Conditioning Adapter Set V.A.G 1786
GWWA87-0068Courtesy of AUDI OF AMERICA, LLC

A -  Connection with valve (small valve insert) on low-pressure side of refrigerant circuit

B -  A/C Adapter Set - Adapter 1 :VAG1786/1  .

C -  Commercially available charging hose (short version with 5/8" thread on each end).

D -  A/C Adapter Set - Adapter 2 :VAG1786/2  (for connection of quick-release coupling of service station -E-).

NOTE:

Assemble the adapter and charging hose as shown and connect to connection with valve -A- first.

The A/C Adapter Set - Adapter 2 :VAG1786/1  is only to be used at connections with "small" valve insert (standard for connection with valve for A/C Refrigerant Low Pressure Switch :F73  and gradually introduced as of 10.94 also at compressor).

Instead of the A/C Adapter Set - Adapter 1 :VAG1786/1  , the A/C Adapter Set - Adapter 10 :VAG1785/10  can also be used (remove valve from A/C Adapter Set - Adapter 10 :VAG1785/10  or install valve opener in charging hose).

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