Genuine Ford Explorer Sport Trac A/C Orifice Tube

Ford Explorer Sport Trac A/C Orifice Tube Parts Questions & Experts Answers

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  F5UZ-19D990-AB
  Q: How to replace the expansion tube and accumulator-drier in an air conditioning system on Ford Explorer Sport Trac?

  A: Whenever the A/C Orifice Tube is replaced, the accumulator-drier should also be replaced. Removal of the A/C Orifice Tube involves having the air conditioning system discharged and the refrigerant recovered. Disconnect the cable from the negative terminal of the battery. Disconnect the condenser-to-evaporator refrigerant line at the firewall. The A/C Orifice Tube is a tube with a fixed-diameter orifice and a mesh filter at each end. When you separate the pipe at the fitting you will see one end of the A/C Orifice Tube inside the pipe leading to the evaporator. Use a special removal tool to remove the A/C Orifice Tube. The A/C Orifice Tube acts to meter the refrigerant, changing it from high-pressure liquid to low-pressure gas. It is possible to reuse the A/C Orifice Tube if the screens aren't plugged with grit or foreign material, neither screen is torn, the plastic housing over the screens is intact, and the brass orifice inside the plastic housing is unrestricted. Installation is the reverse of removal. Be sure to insert the A/C Orifice Tube with the shorter end in first, toward the evaporator, and lubricate the refrigerant line and the A/C Orifice Tube with clean refrigerant oil to aid assembly. Retighten the fitting and refrigerant line, then have the system evacuated, recharged and leak-tested by the shop that discharged it.