Audi A4 2001 - Brake System and Hydraulic Modulator

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1.4.5 Quick-Release Connections on Refrig‐
erant Lines
WARNING
The quick acting coupling connectors may be unlocked and
opened only if the refrigerant circuit is empty.
Note
♦ This illustration shows a refrigerant pipe with an inner heat
exchanger that is installed in the Audi A4 from MY 2008 and
on the Audi A5 Coupe from MY 2008. Refer to ⇒ Heating,
Ventilation and Air Conditioning; Rep. Gr. 87 ; Removal and
Installation (vehicle-specific repair manual).
♦ The retaining ring -A-, for example, must be opened using the
release tool for air conditioner couplings -T40149/- in order to
remove the refrigerant pipes-D-. Refer to ⇒ Heating, Ventila‐
tion and Air Conditioning; Rep. Gr. 87 ; Removal and Instal‐
lation (vehicle-specific repair manual).
♦ Replace the quick-release couplings -B- and -G- after remov‐
ing the refrigerant line with the support ring -E- or -H- and O-
ring -F- or -J-. Refer to ⇒ Heating, Ventilation and Air
Conditioning.; Rep. Gr. 87 ; Removal and Installation (vehicle-
specific repair manual) and Electronic Parts Catalog (ETKA).
A - Retaining ring (inside the quick-release coupling, high pres‐
sure side)
B - Quick-release coupling with retaining ring (high pressure side)
C - Refrigerant line with an inner heat exchanger
D - Refrigerant line (high pressure side)
E - Support ring (high pressure side)
F - O-ring (high pressure side)
G - Quick-release coupling with retaining ring (low pressure side)
H - Support ring (low pressure side)
J - O-ring (low pressure side)
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
1. General Information 25