Genuine Audi TT A/C Expansion Valve

Audi TT A/C Expansion Valve Parts and Q&A

• Expansion Valve
  6N0-820-679-D
  Q: How to discharge the refrigerant circuit associated with the A/C Expansion Valve using approved procedures and equipment according to the manufacturer's instructions on Audi TT?

  A:

  Use the manufacturer's instructions along with approved procedures and equipment to discharge the refrigerant circuit. Depending on engine version removing the front suspension strut tower cross brace may give improved access. To remove the refrigerant lines, unclip the expansion valve insulation and remove the screw securing the line. Foil at least two open ends of refrigerant lines and expansion valve ports to restrict the entry of moisture and dirt. Detach the securing screw and slide the expansion valve off the connection on the evaporator then remove the threaded plate. To install the component, reverse the order of removal. Be sure to replace the O-rings. Tighten the securing bolt to the expansion valve to 8 Nm. New fittings should be checked before the installation of the expansion valve and new insulation should be properly placed. To conclude, evacuate and recharge system.