Expansion Valve: Service and Repair

Removing and Installing the Expansion Valve

Removing

1. Remove the cover above the heating/air-conditioning system.
2. Remove the refrigerant by suction using the service unit.
3. Detach the air-conditioning lines at the expansion valve. Immediately close connections and lines 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.

Installing

NOTE: Refrigerant oil removed from a previously run air-conditioning system may no longer be used (special-category waste).

Do not remove plugs until shortly before installation. Replace O-rings and wet the new rings with refrigerant oil.

Tightening torque:
- M5 screw 6 Nm (4.5 ft. lbs.)
- M6 screw 9 Nm (6.5 ft. lbs.)