Preliminary Work For Flushing Refrigerant Circuit
Special tools and workshop equipment required
- A/C Service Station with flushing device
- Refrigerant Circuits Adapter Set 1:VAS 6338/1
- If a vehicle-specific description is available for cleaning the refrigerant circuit, then refer to Refrigerant Circuit .
- Pay attention to the main wiring diagram for cleaning, which is vehicle-specific and depending on vehicle equipment. Refer to MAIN WIRING DIAGRAM FOR CLEANING THE REFRIGERANT CIRCUIT .
Preliminary Work
-- Remove the A/C compressor. Refer to A/C COMPRESSOR, REMOVING AND INSTALLING .
Vehicles with reservoir/receiver/dryer
-- Remove the reservoir/receiver/dryer. Refer to Refrigerant Circuit .
-- Connect the refrigerant lines to the reservoir/receiver/dryer. Refer to ADAPTER FOR ASSEMBLING FLUSHING CIRCUIT .
Vehicles with Desiccant Bag/Dryer Cartridge
-- Remove the desiccant bag/dryer cartridge and the screen if equipped. Close the receiver/dryer again. Refer to .
Vehicles with expansion valve
-- Remove the expansion valve and replace with the adapter. Refer to EXPANSION VALVE, REMOVING AND INSTALLING and ADAPTER FOR ASSEMBLING FLUSHING CIRCUIT .
Vehicle with two evaporators
-- Disconnect the second evaporator from the refrigerant circuit of the first evaporator and flush in a separate work procedure. Refer to ADAPTER FOR ASSEMBLING FLUSHING CIRCUIT and Refrigerant Circuit .
Vehicles with high-voltage system (without additional A/C system functions)
-- Install further adapters to flush the refrigerant circuit. Refer to ADAPTER FOR ASSEMBLING FLUSHING CIRCUIT .