Heater And A/C Unit Refrigerant Cut-Off Valve -N541-, Removing And Installing: Removing
-- Turn 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) (Refrigerant R134a Servicing, Refrigerant Circuit, Working with A/C Service Station) or REFRIGERANT CIRCUIT, DISCHARGING (R1234yf) / REFRIGERANT CIRCUIT, EVACUATING (R1234yf) / REFRIGERANT CIRCUIT, CHARGING (R1234yf) .
-- Loosen the bracket -A- (for the High Voltage Battery Coolant Valve -N688-) from the plenum chamber bulkhead.
-- Loosen and carefully bend back the heat shield -B- in the area of the Heater and A/C Unit Refrigerant Shut-Off Valve -N541- -D- and the refrigerant line -F- (to the separating point on the right longitudinal member) from the plenum chamber bulkhead.
-- Remove the spring nut -1 and 3-.
-- Fold the heat shield -2- as far forward as necessity (and possible) -arrow-.
-- Disconnect the connector -C- from the Heater and A/C Unit Refrigerant Shut-Off Valve -N541- -D-.
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.
-- Loosen the union nuts -E- at the same time counterhold on the Heater and A/C Unit Refrigerant Shut-Off Valve -N541- -D-.
-- Loosen the refrigerant line -F- (to the separating point on the right longitudinal member) from the bracket on the plenum chamber bulkhead.
-- Remove the Heater and A/C Unit Refrigerant Shut-Off Valve -N541- -D-.