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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 513 (Refrigerant R134A Servicing (1 Of 2) (Sedan)) >> 87 Air Conditioning >> Refrigerant Circuit General Information >> Refrigerant Circuit Components Allocation, High And Low Pressure Sides >> Quick-Release Connections On Refrigerant Lines

Quick-Release Connections On Refrigerant Lines

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WARNING:

The quick-release coupling connectors may be unlocked and opened only if the refrigerant circuit is empty.

NOTE:

This illustration shows the quick-coupling connection with 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 OVERVIEW - REFRIGERANT CIRCUIT (vehicle-specific repair information).

The retaining ring -A- must be opened using, for example, the Air Conditioner Couplings Release Tool T40149 in order to remove the refrigerant line -D-. Refer to OVERVIEW - REFRIGERANT CIRCUIT (vehicle-specific repair information).

Fig 1: Identifying Quick-Release Connections On Refrigerant Lines
GWWA87-10581Courtesy of AUDI OF AMERICA, LLC

The quick-release coupling connectors -B- and -G- are to be replaced after removing the refrigerant line with the respective support ring -E- or -H- and O-ring -F- or -J-. Refer to OVERVIEW - REFRIGERANT CIRCUIT (vehicle-specific repair information) .

A - Retaining ring (inside the quick-release coupling connector, high pressure side)

B - Quick-release coupling connector 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 connector with retaining ring "low pressure side"

H - Support ring "low pressure side"

J - O-ring "low pressure side"

NOTE:

There are different quick-release coupling versions -A- and -D-. The refrigerant lines -C-, for example, can unlocked and removed using the Air Conditioner Couplings Release Tool T40149/1 in the same manner for both versions of the quick-release couplings.

Fig 2: Identifying Quick-Release Coupling Versions
GWWA87-10682Courtesy of AUDI OF AMERICA, LLC

The check pins on the -B- quick-release couplings -A- installed at SOP are visible -C-, when the locked refrigerant line -C- is pulled in the direction of arrow.

Beginning with MY 2010, as a running change, the quick-release coupling -D- and the refrigerant line -C- are being installed in the same manner as 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- installed 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-.

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