Quick-Release Coupling Connections On Refrigerant Lines

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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 [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB]

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 [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB]

Courtesy of AUDI OF AMERICA, LLC

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 [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB]

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 quick-release coupling versions -A and D-. On both versions of this quick-release coupling the refrigerant lines -C- can be released and remove in the same way for example with the Air Conditioner Couplings Release Tool:T40149/1 . Refer to REFRIGERANT CIRCUIT [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB]

Courtesy of AUDI OF AMERICA, LLC

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- version the refrigerant line -C- is installed in the same manner as quick-release coupling -A-. If the refrigerant line -C- is pulled in the direction of the -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-.