Expansion Valve, Removing And Installing, Front Refrigerant Circuit: Removing
-- Remove the heat shield until the expansion valve is accessible.
-- If necessary remove the vacuum hose to the brake booster.
Vehicles with Refrigerant R134a
-- Discharge the refrigerant circuit. Refer to the appropriate Service Information .
Vehicles with Refrigerant R1234yf
-- Discharge the refrigerant circuit. Refer to WORKING WITH A/C SERVICE STATION .
Continuation for all vehicles
Danger of frostbite due to refrigerant coming out under pressure.
Frostbite on the skin and other parts of the body is possible.
- Wear safety gloves.
- Wear protective eyewear.
- Extract refrigerant and open the refrigerant circuit immediately.
- If more than 10 minutes have elapsed since evacuating the refrigerant and the refrigerant circuit was not opened, evacuate the refrigerant again. Evaporation can cause pressure to develop in the refrigerant circuit.
-- For all following procedures immediately seal all the open lines and connections with clean plugs from the Engine Bung Set:VAS 6122 .
-- Remove the bolt -2-.
Risk of destroying the refrigerant lines by tearing the inner film.
- Never bend the refrigerant lines to a radius smaller than r = 100 mm.
-- Remove the refrigerant lines -1- and -3- and move to the side.
-- Remove the bolts -2-.
-- Carefully remove the expansion valve -1-.