Expansion Valve, Removing And Installing (Front A/C Unit): Removing

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Audi S6, 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi S6, and 2017 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

-- Remove the tower brace. Refer to TOWER BRACE, REMOVING AND INSTALLING .

-- Discharge the refrigerant circuit. Refer to appropriate service information. .

-- If necessary, remove the plenum chamber bulkhead. Refer to BULKHEAD .

NOTE:

There are different versions of the plenum chamber bulkhead depending on the engine. Refer to the Parts information. Depending on the version of the plenum chamber bulkhead (from the engine) the space between the plenum chamber bulkhead and the connection for the inner heat exchanger on the expansion valve is too small to remove the bolts -3 and 4- and to remove the inner heat exchanger from the expansion valve with the plenum chamber bulkhead installed (for example on vehicles with 6-cylinder TDI engine with two turbochargers).

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-- Remove the refrigerant lines from the inner heat exchanger. Refer to REFRIGERANT LINES WITH INNER HEAT EXCHANGER, REMOVING AND INSTALLING .

-- Free up the inner heat exchanger -1- at the bracket by releasing the clip -5- -arrow- and opening.

-- Remove the bolts -3 and 4-.

-- Disconnect the refrigerant line -2- with the inner heat exchanger from the expansion valve.

-- Seal the open lines and connections with clean plugs from the Engine Bung Set:VAS6122 .

-- Remove the bolts -A-.

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-- Disconnect the expansion valve -B- from the refrigerant lines leading to the evaporator.

-- Seal the open lines and connections with clean plugs from the Engine Bung Set:VAS6122 .