Quick-Release Coupling Connections On Refrigerant Line

WARNING: This page is about a different car, the 2022 Volkswagen ID.4 and 2021 Volkswagen ID.4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

This illustration shows the quick-release coupling connections with a refrigerant line with an inner heat exchanger as it is installed for example on the Audi A4 from MY 2008 and on the Audi A5 Coupe from MY 2008. Refer to Refrigerant Circuit (vehicle-specific Service Information).

To remove the refrigerant line -D- the retaining ring -A- must be opened for example with the refrigerant line release ring (Air Conditioner Couplings Release Tool :T40149 or Retaining Ring :T40232 ). Refer to Refrigerant Circuit (vehicle-specific Service Information).

Fig 1: Exploded View Of Quick-Release Coupling Connections On Refrigerant Lines

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The quick-release coupling connections -B and G- are to be replaced after removing the respective refrigerant line with the corresponding support ring -E or H- and the corresponding seal -F or J-. Refer to Refrigerant Circuit (vehicle-specific Service Information) and the Parts Information.

A - Retaining ring (in the quick-release coupling connection, high pressure side)

B - Quick-release coupling connection with "high pressure side" retaining ring

C - Refrigerant line with inner heat exchanger

D - "High Pressure Side" Refrigerant Line

E - "High pressure side" support ring

F - "High Pressure Side" Seal

G - Quick-release coupling connection with "low pressure side" retaining ring

H - "Low pressure side" support ring

J - "Low Pressure Side" Seal

NOTE:

There are different versions of the quick-release couplings -A and D-. The refrigerant lines -C- can be released and removed in the same way for both versions of the quick-release couplings by using the release tool for air conditioner couplings Air Conditioner Couplings Release Tool :T40149 , for example. Refer to Refrigerant Circuit (vehicle-specific Service Information).

Fig 2: Identifying Quick-Release Coupling Versions

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

On the quick-release coupling -A- version the check pins -B- become visible after the refrigerant line -C- is installed, if the locked refrigerant line -C- is pulled in the direction of the arrow.

On the quick-release coupling -D-, the refrigerant line -C- is being installed in the same manner as on the quick-release coupling -A-. If the refrigerant line -C- is pulled in the direction of arrow after assembling, the ring -E- will come out of the quick-release coupling -D- and will show that the retaining ring -F- is completely latched to the refrigerant line -C-. Then the ring -E- can be removed from the refrigerant line -C-.