Expansion Block/Orifice Tube: Service and Repair

Special Tools


REMOVAL

NOTE: The A/C evaporator core orifice should be replaced whenever an A/C compressor is replaced for internal damage.





1. Remove the A/C refrigerant line support clip bolt.








2. Disconnect the front and rear condenser to evaporator tube spring lock coupling.

CAUTION: Plug all ports to prevent contamination from dirt or moisture.





3. Engage (A) Fixed Orifice Tube Remover/Replacer T83L-19990-A with the (B) two A/C evaporator core orifice tangs.

CAUTION: Do not attempt to remove the A/C evaporator core orifice with pliers or rotate the orifice in the liquid line. To do so will break the fixed orifice tube body in the discharge line. Use only the recommended tool as outlined.





4. Hold the tool T-handle and turn the tool nut against the liquid line until the A/C evaporator core orifice is pulled free.
5. If the A/C evaporator core orifice breaks in the liquid line, remove it as follows:
a. Insert the screw end of Broken Orifice Tube Extractor T83L-19990-B into the liquid line.
b. Thread the screw end of the tool into the center of the A/C evaporator core orifice brass tube and pull from the liquid line.
c. If only the brass center tube is removed, repeat the process to remove the A/C evaporator core orifice body.

INSTALLATION
1. Lubricate the A/C evaporator core orifice O-ring.
^ Use Motorcraft YN-12b Refrigerant Oil or equivalent meeting Ford specification WSH-M1C231-B.





2. Engage (A) Fixed Orifice Tube Remover/Replacer T83L-19990-A with the (B) two A/C evaporator core orifice tangs.





3. Insert the A/C evaporator core orifice into the discharge line until it seats at the stop.
4. Remove Fixed Orifice Tube Remover/Replacer T83L-19990-A from the A/C evaporator core orifice.
5. Connect the front and rear condenser to evaporator tube spring lock coupling.
6. Leak test the A/C system.