Heat Pump Valve Unit, Removing And Installing: Removing
Immediately seal off any open lines and connections with clean plugs from the Engine Bung Set:VAS 6122 .
If several components of the heat pump valve unit are being replaced simultaneously:
-- Pay attention to the procedure when replacing the refrigerant circuit components. Refer to the appropriate Service Information .
Continuation
-- Perform the "open the electric activated valves for the refrigerant circuit for extracting, evacuating and filling" with Vehicle Diagnostic Tester . Refer to Diagnostic Entries .
-- Refer to the appropriate Service information .
-- Refer to COOLANT, DRAINING .
-- Remove the heater and A/C unit air intake housing. Refer to Heater and A/C Unit Air Intake Housing, Removing and Installing .
-- Loosen the coolant expansion tank and move to the side. Refer to COOLANT EXPANSION TANK, REMOVING AND INSTALLING .
-- Remove the front underbody trim panel. Refer to UNDERBODY SIDE TRIM PANEL, REMOVING AND INSTALLING, 55, 62 KWH or UNDERBODY SIDE TRIM PANEL, REMOVING AND INSTALLING, 82 KWH .
-- Remove the lock carrier. Refer to LOCK CARRIER, REMOVING AND INSTALLING .
-- Disconnect the coolant hose -1- and move to the side.
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.
- Evacuate or drain refrigerant and open the refrigerant circuit immediately.
- If more than 10 minutes have elapsed since evacuating or draining the refrigerant and the refrigerant circuit was not opened, evacuate or drain the refrigerant again. Pressure develops in the refrigerant circuit due to evaporation.
-- Remove the bolt -2-.
-- Remove the refrigerant line -3-.
-- Disconnect the connector -3-.
-- Remove the bolt -2-.
-- Remove the refrigerant line -1-.
-- Remove the bolts -3-.
-- Remove the refrigerant line -1- and -2-.
-- Loosen the clamps -3-.
-- Remove the coolant hoses -1- and -2-.
-- Disconnect the connectors -1- and -2-.
-- Remove the bolts -1-, -2-, -3- and -4-.
-- Remove the refrigerant lines.
-- Remove the bolts -2-, -3- and -4- from the bracket for the heat pump valve unit -1-.
-- Remove the heat pump valve unit -1- upward.
Risk of damaging electrical components.
The electrostatic charge can damage electrical components.
- Procedures at the electrical components must only be performed at an electro-static discharge work surface.
-- Place the heat pump valve unit on the ESD Work Surface:VAS 6613 .