Expansion Valve, Removing And Installing: Removing
On some vehicles, connecting pipe from charge air cooler should be removed. Refer to [For engine(s) CHHB, DKFA, CNSB, CNSA, CNTA, CXBB, CXBA, CXCB, CXCA, CXDB, CXDA] Overview - Charge Air System .
Vehicles with a TDI engine
-- Press the release buttons on the crankcase ventilation hose -1- and remove the hose from the cylinder head cover.
-- Free up the vacuum hoses on the air duct pipe -arrows-.
-- Loosen the hose clamp -3-.
-- Pivot the air guide pipe with the connection rearward and remove from the turbocharger.
Continuation for All Vehicles
-- Remove the sheet metal nuts -1 and 3-.
-- Fold the heat shield -2- as far forward as possible the direction of the -arrow-.
Vehicles with Refrigerant R134a
-- Drain the refrigerant circuit. Refer to Working with A/C Service Station .
Vehicles with Refrigerant R1234yf
-- Drain the refrigerant circuit. Refer to Working with A/C Service Station .
Danger or 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 elapse after extracting the refrigerant and the refrigerant circuit was not opened, extract the refrigerant again. Pressure can develop in the refrigerant circuit due to evaporation.
Continuation for All Vehicles
-- Remove the nuts -1 and 3- from the refrigerant line with the inner heat exchanger -5-
-- Remove the bolt -7-
-- Disconnect the refrigerant line with the inner heat exchanger -5- from the expansion valve.
-- Remove the bolt -1-.
-- Disconnect the refrigerant line -2- with the inner heat exchanger from the expansion valve.
-- Remove the bolts -1 and 3-.
-- Remove the expansion valve -4- from the heat shield insulation -2-.
-- Seal the open lines and connections with clean plugs from the Engine Bung Set:VAS6122 .