Heat Pump Valve Unit, Removing And Installing, 2-Valve Block From 03/2021: Removing
- For all the following work, immediately close the open lines and connections with clean plugs from the Engine Bung Set :VAS6122 .
Working on a high-voltage system when activated or with the ignition turned on
-- Switch off (deactivate) the "parking air conditioner". Refer to Owner's Manual.
-- Switch the ignition on.
-- Initiate the basic setting of the A/C system using the Thermal Management Control Module -J1024- and open the electric valves using the routine Refrigerant Circuit, Extract, Evacuate and Fill in the Vehicle Diagnostic Tester.
-- Switch the ignition off.
-- Discharge the refrigerant circuit. Refer to Refrigerant Circuit or Working with A/C Service Station (1 Of 2) / Working with A/C Service Station (2 Of 2) .
-- Remove the left front wheel housing liner. Refer to OVERVIEW - FRONT WHEEL HOUSING LINER .
-- Remove the front bumper cover end plate. Refer to OVERVIEW - BUMPER COVER .
-- Remove all lines and connectors on the bracket -A-.
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 elapse after extracting or draining the refrigerant and the refrigerant circuit was not opened, extract or drain the refrigerant again. Pressure develops in the refrigerant circuit due to evaporation.
-- Remove the bolt -B- and remove the refrigerant line -D-.
-- Remove the bolts -arrows-.
-- Remove the bolts -C- and then remove the bracket -A- downward.
-- Remove the bolt -I- and then remove the refrigerant line -H- from the check valve -J-.
-- Remove the nut -B- and refrigerant lines -A and C- to the inner heat exchanger.
-- Disengage the refrigerant line -3- from the bracket -2-, remove the bolts -1-.
-- Remove the refrigerant line -3-.
-- Remove the bolts -5- and then remove the refrigerant lines -6 and 7- from the heat pump valve unit -4-.
-- Remove the bolts -2 and 5-.
-- Disconnect the connectors -1- and remove the heat pump valve unit -4-.