Connecting For Measuring And Testing, No Service Connection - Audi 100 1991 Repair Manual

Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Vehicles with only one service connection
Note
Screw -V.A.G 1785/9- , -V.A.G 1785/10- or -V.A.G 1786- to re‐
frigerant circuit connections with valve and bleed charging hoses
during connection to adapters (faintly audible escape of refriger‐
ant gas is permitted).
– The charging hose must be installed with a valve opener for
opening valve in valve adapter.
2.4.6 Connecting for Measuring and Testing,
No Service Connection
On the following vehicles, no service connection is provided for
the service station on the low-pressure side of the refrigerant cir‐
cuit; adapters must be used to connect the service station to the
refrigerant circuit on these vehicles:
♦ Audi 80, Audi Cabrio, Audi Coupe
♦ Audi A4 up to 07.96
♦ Audi 100/ Audi A6 up to 03.97
♦ Audi A8 up to 11.97
Note
On vehicles with no or inaccessible connection at compressor,
remove A/C Refrigerant Low Pressure Switch -F73- (bridge ter‐
minals in connector to A/C Refrigerant Low Pressure Switch -
F73- ) and screw adapter to this connection. Refer to ⇒ Heating,
Ventilation and Air Conditioning; Rep. Gr. 87 ; Removal and In‐
stallation (vehicle-specific repair manual).
Note
The tools listed below are commercially available or can be
♦
obtained from local distributor or importer.
Should it be necessary to measure pressures at switch con‐
♦
nections on high-pressure side, use Adapter set for refrigerant
circuit -V.A.G 1785/9- and proceed in the same manner.
♦ Service station, connecting with Air conditioning adapter set -
V.A.G 1786- to refrigerant circuit, refer to
⇒ "2.4.7 Connecting With Air Conditioning Adapter Set V.A.G
1786 ", page 86
♦ Service station, connecting with adapter V.A.G 1785/10 to re‐
frigerant circuit, refer to
⇒ "2.4.8 Connecting With Adapter Set VAG1785/10 ",
page 87 .
Servicing Station, Connecting for Measuring and Testing
– Switch off the ignition.
– Connect service station to power supply.
– Assemble adapter set and screw to connection on low-pres‐
sure side.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Refrigerant R134a Servicing - Edition 01.2011
2. Description and Operation
85