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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Vehicle Required Adapt‐
ers For The Con‐
nectors To A/C
Compressor
Adapters Necessary
For The Connections
To The Accumulator
Other
♦ Addi‐
tional
on
vehi‐
cles
with
2
evap‐
ora‐
tors
(4
zone
A/C
sys‐
tem)
To flush circuit with
evaporator in front A/C
unit
♦ Adapter -VAS
6338/5- for sealing
the low-pressure
side connection (to
second evaporator)
♦ Adapter -VAS
6338/11- for seal‐
ing the high-pres‐
sure side connec‐
tion (to second
evaporator)
• The adapter may
need an additional
hole (see below) so
that the refrigerant
pipes can be cov‐
ered with the
Adapters -VAS
6338/5- and -VAS
6338/11- .
To flush the second
evaporator and corre‐
sponding lines
♦ Adapter -VAS
6338/3- for con‐
necting A/C Service
Station to the low-
pressure side con‐
nection (to second
evaporator).
♦ Adapter -VAS
6338/4- for con‐
necting A/C Service
Station to the high-
pressure side con‐
nection (to second
evaporator).
• It may be necessa‐
ry to rework the
adapter (see be‐
low) so that the re‐
frigerant pipe can
be attached to the
Adapter -VAS
6338/3- .
The ex‐
pansion
valve in the
refrigerant
pipes and
for the sec‐
ond evapo‐
rator is re‐
moved and
the Adapt‐
er -VAS
6338/18-
installed
(or the re‐
moved ex‐
pansion
valve is
drilled for
flushing
and instal‐
led again
⇒
page 34 ).
Note
♦
In vehicles with two evaporators, refrigerant circuit is flushed
in two work steps.
♦
Currently the front and rear expansion valves have the same
connections (only the control characteristics are different)
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
2. Description and Operation 53
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