Restrictor

Refrigerant Circuit

Restrictor

• Only install a red restrictor on this vehicle. The color may also appear orange depending on the manufacturer.

• Differently colored replacement restrictors "yellow" colored, diameter of bore / constriction 1.54 mm, restrictor "red" colored, diameter of bore / constriction 1.42 mm), therefore heed assignment different matching of refrigerant circuit.

• Refrigerant lines from evaporator to compressor / reservoir are available in different versions, depending on vehicle model.

Removing

- Drain the refrigerant circuit.

- Disconnect refrigerant line at threaded connection - A - seal open connections.





- Pull restrictor - B - out of refrigerant line using needle nose pliers.

Installing

• Only install restrictors of same type; restrictors with different colors have different bore diameters.

- Check O-ring - C - (7.5 mm; 1.5 mm) for correct seating in groove.

- Coat O-ring of restrictor and at threaded connection lightly with refrigerant oil before installation. Refer to => [ Refrigerant Circuit O-Ring Seals ] Refrigerant Circuit O-Ring Seals.

- Install restrictor - B - accurate to side arrow on restrictor faces evaporator.

- Check seating of restrictor, it must seat in refrigerant line free of play

- Replace O-ring - D - (11.1 mm; 1.8 mm).





- Install refrigerant pipes such that they are not strained.

- Tighten threaded connection - A - to 15 Nm.

• Check position of refrigerant pipes after tightening union. Pipes must not make contact with other components.

- Evacuate and re-charge refrigerant circuit.

- Operate the A/C system after filling the refrigerant circuit. Refer to => [ Operating A/C System after Filling Refrigerant Circuit ] Operating A/C System after Filling Refrigerant Circuit

• Note the information regarding operating the A/C system after filling.