Ford 7T4Z-19C836-B
Drier

A new A/C accumulator desiccant bag needs to be installed during A/C system servicing only after observing physical signs from either a failed A/C compressor or desiccant bag damage such as physical destruction or water contamination. Moisture contamination develops only when the system experiences complete refrigerant loss combined with system pressure reaching atmospheric pressure for more than one hour. The technician must wait until all positive refrigerant pressure dissolves before replacing the desiccant bag. The first step involves unfastening the A/C condenser core from its location. The operation to replace the A/C accumulator plug begins with unplugging it and requires you to tighten it back into position with 3 Nm (27 lb-in). Users should use an appropriate tool to take out the A/C accumulator desiccant bag properly on site. Reinstall the new A/C accumulator plug by performing the opposite steps used for removal and applying PAG oil to the O-ring seal.

It is essential to replace the A/C accumulator desiccant bag only when you observe physical signs of contamination following a failed A/C compressor together with desiccant bag damage or when moisture enters due to prolonged exposure to atmospheric pressure during a complete refrigerant loss. The system repair process should not require new desiccant bag replacement since positive refrigerant pressure exists during this period. Start by taking out the A/C condenser core while following with the removal of the A/C accumulator plug then secure it with a torque of 3 Nm (27 lb-in) after reinstalling. Before removal of the A/C accumulator desiccant bag employ a suitable tool for grasping it. The completion of installation requires reversing the removal process while lubricating the O-ring seal on the new A/C accumulator plug with clean PAG oil.

Ensure to tighten the plug to 3 Nm (27 lb-in).