– Connect quick-release coupling adapter to charging hoses of
service station (handwheels not screwed in/hand shut-off
valve not open).
– Switch on service station and evacuate charging hoses (only
necessary if there is air in charging hoses).
– Switch off service station.
– Remove the cap from service connection/connection with
valve (or remove low-pressure switch and bridge respective
electrical connections).
– Connect service station via service connections with quick-re‐
lease coupling adapters to vehicle refrigerant circuit.
– Install the handwheel on the quick-release coupling adapters
only until valve is definitely open at refrigerant circuit connec‐
tion (observe pressure gauge, do not strain valve).
– Perform planned tests and measurements.
2.4.7 Connecting With Air Conditioning
Adapter Set -V.A.G 1786-
A - Connection with valve (small valve insert) on low-pressure
side of refrigerant circuit
B - Adapter with union nut -V.A.G 1786/1-
C - Commercially available charging hose (short version with 5/8"
thread on each end).
D - Adapter with service connection -V.A.G 1786/2- (for connec‐
tion of quick-release coupling of service station -E-).
Note
♦
Assemble adapter and charging hose as shown and connect
to connection with valve -A- first.
♦
The Adapter with union nut -V.A.G 1786/1- 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 Adapter with union nut -V.A.G 1786/1- , also Adapt‐
er -V.A.G 1785/10- can be used (remove valve from Adapter
-V.A.G 1785/10- or install valve opener in charging hose).
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
86 Rep. Gr.00 - General, Technical Data
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