Audi Q5 2008 - Page 62

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Note
♦ The A/C compressor can only be removed when the engine is
removed on the Audi R8. The refrigerant lines must be re‐
moved in order to be able to flush the refrigerant circuit. Refer
to ⇒ Heating, Ventilation and Air Conditioning; Rep. Gr. 87 ;
Removal and Installation (vehicle-specific repair manual).
♦ Both installed condensers are flushed in opposite direction of
the refrigerant flow direction.
2.1.3 Condenser
The condenser conducts heat from compressed refrigerant gas
to the ambient air.
This condenses the refrigerant gas to fluid.
Note
Depending on the version of the refrigerant circuit, the fluid res‐
ervoir installed either on the condenser or inside the condenser
(integrated). Refer to ⇒ Heating, Ventilation and Air Conditioning;
Rep. Gr. 87 ; Removal and Installation (vehicle-specific repair
manual) and Electronic Parts Catalog (ETKA).
2.1.4 Connections with Schrader Valve
♦ -A- Service connection (soldered in)
♦ -B- Valve insert (Schrader valve or needle valve)
♦ -C- O-ring (belonging to the valve)
♦ -D- Cap with seal
Note
♦ After connecting, install the hand wheel for the service cou‐
pling just far enough into the quick-release coupling adapter
until the valve is securely opened inside the service connec‐
tion (pay attention to the pressure gauge, do not put too much
pressure on the valve).
♦ For removing and installing the valve set -B- when the refrig‐
erant circuit is evacuated, for example, use an adapter from
the Socket for A/C valves -T10364- .
♦ Tighten the valve insert -B- very carefully because the tight‐
ening specification is very small.
♦ There are different versions of these valves, which means
there are different tightening specifications. Valve insert -B-
with a VG5 (5.2 x 0.7 mm, tire valve) thread has a tightening
specification of 0.4 Nm +- 0.1 Nm; a valve insert with a M6 x
0.75 mm thread has a tightening specification of 0.9 Nm
+- 0.1 Nm and a valve insert with a M8 x 1.0 mm thread has a
tightening specification of 2.0 Nm+- 0.2 Nm.
♦ There are different versions of these valves, valve inserts and
their caps. Be sure to use the correct version. Refer to the
Electronic Parts Catalog (ETKA).
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
58 Rep. Gr.00 - General, Technical Data