Refrigerant Lines, Disconnecting And Connecting At Electrically-Driven A/C Compressor: Notes
Special Tools And Workshop Equipment Required
- Engine Bung Set :VAS6122
For all procedures on vehicles with a high-voltage system, pay attention to the additional warnings for these vehicles. Refer to SAFETY PRECAUTIONS WHEN WORKING ON VEHICLES WITH HIGH-VOLTAGE SYSTEM .
For the following procedures work near the high-voltage system components is necessary, "Safety Precautions when Working near High-Voltage Components". Refer to SAFETY PRECAUTIONS WHEN WORKING NEAR HIGH-VOLTAGE COMPONENTS .
-- On vehicles with a high-voltage system, switch off (deactivate) the "auxiliary climate control" function. Refer to the Owner's Manual and Infotainment/MMI Operating Manual.
-- Switch off the ignition.
-- Discharge the refrigerant circuit. Refer to REFRIGERANT CIRCUIT, DISCHARGING WITH A/C SERVICE STATION (R134a) / REFRIGERANT CIRCUIT, EVACUATING WITH A/C SERVICE STATION (R134a) / REFRIGERANT CIRCUIT, CHARGING WITH A/C SERVICE STATION (R134a) or REFRIGERANT CIRCUIT, DISCHARGING (R1234yf) / REFRIGERANT CIRCUIT, EVACUATING (R1234yf) / REFRIGERANT CIRCUIT, CHARGING (R1234yf) .
-- Remove the front noise insulation. Refer to NOISE INSULATION, REMOVING AND INSTALLING / OVERVIEW - NOISE INSULATION .
Risk Of Damaging The Refrigerant Lines And Hoses.
- Do not bend, twist or stretch the refrigerant lines and hoses.
Danger Due To Refrigerant Coming Out Under Pressure.
Danger of frost bite to skin and other parts of the body.
- Evacuate the refrigerant and immediately open the refrigerant circuit afterward.
- If more than 10 minutes have elapsed since evacuating the refrigerant and the refrigerant circuit was not opened, evacuate the refrigerant again. Pressure in the refrigerant circuit is caused by evaporation.
-- Remove the bolts -2 and 3- and remove the refrigerant lines -1 and 4-.
-- Seal the open lines and connections with clean plugs from the :VAS6122 .