Expansion Valve: Service and Repair

Removing and installing the expansion valve

Removal
1. Remove the cover above the heating/air-conditioning system.
2. Remove refrigerant by suction with the service unit.
3. Undo the air-conditioning lines at the expansion valve. Close connections and lines immediately with plugs so that they are air-tight.






4. Undo the expansion valve and remove it. Immediately close the lines to the evaporator with plugs so that they are air-tight.

Installation
1. Do not remove plugs until shortly before installation. Replace O-rings and wet the new rings with refrigerant oil.
2. Refrigerant oil removed by suction from a previously run air-conditioning system may no longer be used (special-category waste).
3. Tightening torques:
M5 Screw 6 Nm (4.5 ft lb)
M6 Screw 9 Nm (6.5 ft lb)