Refrigerant Pressure Sensor / Switch: Service and Repair

WM 878319 Removing and installing pressure switch

Technical values





Preliminary work

Preliminary work for pressure switch

-> 870317 Draining and filling in refrigerant - section on "draining" Service and Repair

Removing pressure switch

The pressure switch is located in the radiator tank, right side in the direction of travel, under the cowl panel cover.
1. Press release on electrical connector and disconnect from pressure switch.





Releasing and removing connector

2. Place one open-ended wrench on the hexagon of the pressure switch and a second open-ended wrench on the hexagon of the refrigerant line.





Removing switch

3. Unscrew pressure switch from refrigerant line and remove.

Installing pressure switch

Replace the O-ring on the pressure switch and wet it with refrigerant oil.
1. Screw pressure switch onto refrigerant line and tighten with an open-ended wrench. Counter with a second open-ended wrench. => Tightening torque: 3.5 ftlb.





Installing switch

2. Push electrical plug onto pressure switch until it clicks into place.





Plugging in connector

Subsequent work

Subsequent work for pressure switch

-> 870317 Draining and filling in refrigerant - section on "filling in" Service and Repair