OEM Ford F-250 Super Duty A/C Accumulator

Ford F-250 Super Duty A/C Accumulator Parts and Q&A

• Dehydrator
  6C3Z-19C836-B
  Q: How to Remove and Install an A/C Accumulator in an HVAC System on Ford F-250 Super Duty?

  A:

  The first requirement for suction accumulator HVAC servicing includes execution of the Refrigerant Discharging and Recovery Procedure. Besides a back up wrench use a back up wrench for connector P1/A and a back up wrench also for tubing EV7 to prevent damage to fitting and tube when removing the suction accumulator/drier. The suction accumulator/drier can be detached by first removing manifold and tube assembly parts followed by suction accumulator/drier bracket clamp bolt removal. The technician should disconnect the A/C cycling switch from the suction accumulator/drier following its removal. Installation requires following the reverse steps of removal while servicing the new suction accumulator with PAG Refrigerant Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN-12-C) or any oil equivalent to Ford standard WSH-M1C231-B. Furthermore, apply the same PAG Refrigerant Compressor Oil to the O-ring seal. A secondary wrench must be used throughout installation to prevent mixing-up of fitting and tube damage.
• Drier
  8C3Z-19C836-D
  Q: How to Service the A/C Accumulator in the HVAC System on Ford F-250 Super Duty?

  A:

  You must start the suction accumulator HVAC system servicing process by recovering all refrigerant. Begin HVAC system suction accumulator service by disconnecting the A/C cycling switch electrical connector and removing the right-hand fender splash shield. First disconnect the suction accumulator outlet fitting by removing its nut while keeping the fitting tight at 15 Nm (133 lb-in). Remove and discard both seals (O-ring and gasket). Follow the installation procedure by retightening suction accumulator nuts to 7 Nm (62 lb-in). Separate the evaporator outlet fitting by disconnecting it while discarding both seals from the O-rings. Execute the removal procedure in reverse order for installation and use new gasket seals and O-ring seals before applying the correct amount of clean PAG oil to the refrigerant system. The refrigerant system requires evacuation and pressure testing along with addition of refrigerant before completion. The replacement of a suction accumulator should only occur when actual physical contamination evidence reveals itself from compressor failure or when damage occurs through leaks or moisture contamination after an entire refrigerant loss results in extended system pressure equilibrium against atmosphere pressure. System repairs should take place only after all refrigerant pressure has been removed from the system because a new suction accumulator becomes unnecessary.