Refrigerant Lines, Disconnecting From Front Expansion Valve And Reconnecting: Removing
-- Switch off the ignition.
-- Discharge the refrigerant circuit. Refer to REFRIGERANT CIRCUIT, DISCHARGING WITH A/C SERVICE STATION [R134a] or REFRIGERANT CIRCUIT, DISCHARGING [R1234yf] .
-- Remove the plenum chamber cover. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .
To prevent water from running via intake shaft into the heater and A/C unit when plenum chamber cover is installed, plenum chamber cover must not be damaged. In addition the plenum chamber cover must engage correctly and completely in the plenum chamber cover. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .
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 develops in the refrigerant circuit due to evaporation.
-- Remove the refrigerant line -B- from the pass-through for the refrigerant lines in the plenum chamber. Refer to REFRIGERANT LINES IN PLENUM CHAMBER, REMOVING AND INSTALLING .
-- Remove the nut -A-.
-- Remove both refrigerant lines -B and C- from the front expansion valve -D-.
Seal open line connections at the connection point with clean plugs, for example from the :VAS6122 .