Procedures

Refrigerant Circuit, Specialized Repairs

• Refrigerant must be extracted before hand using, for example. A/C service station (ROB134APF).

• The previously used service stations can still be used. Refer to Volkswagen workshop equipment catalog.

• To prevent the entry of dampness all components of the refrigerant circuit which have been opened must be sealed with suitable plugs.

• The color coding of refrigerant circuit O-rings with R134a has been discontinued. Colored and black O-rings are used.

• Threaded connections of refrigerant circuit must be coated with polyethylene glycol (PEG) VW material number 294440 before installing.

• The reservoir and dryer cartridge do not need to be replaced each time the refrigerant circuit is opened under certain conditions.

• Repair work on evacuated refrigerant circuit, which must only be performed in the workshop by experienced technicians using special equipment.