Expansion Block/Orifice Tube: Service and Repair

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

SPECIAL SERVICE TOOL(S) REQUIRED
Broken Orifice Tube Extractor T83L-19990-B
Fixed Orifice Tube Remover/Remover T83L-19990-A

REMOVAL
1. Remove discharge line.
2. Pour a small amount of clean Motorcraft YN-12b refrigerant oil or equivalent meeting Ford Specification WSH-M1C231-B into the outlet end of the discharge line to lubricate the tube and O-ring seals during removal of the A/C evaporator core orifice.
3. Engage the Fixed Orifice Tube Remover/Replacer T83L-19990-A with the two tangs on the A/C evaporator core orifice. Do not twist or rotate the A/C evaporator core orifice in the discharge line as it may break off.







4. Hold the T-handle of the Fixed Orifice Tube Remover/Replacer T83L-19990-A to keep it from turning and run the nut on the tool down against the discharge line until the A/C evaporator core orifice is pulled from the tube.
a. To remove a broken A/C evaporator core orifice, insert the screw end of the Broken Orifice Tube Extractor T83L-19990-B into the discharge line and thread the screw end of the tool into the brass tube in the center of the A/C evaporator core orifice. Pull the A/C evaporator core orifice from the discharge line.

NOTE: If the A/C evaporator core orifice breaks in the discharge line, remove it from the tube with Broken Orifice Tube Extractor T83L-19990-B.

b. If only the brass center tube is removed during Step a, insert the screw end of Broken Orifice Tube Extractor T83L-19990-B into the discharge line and screw the end of the tool into the A/C evaporator core orifice body. Pull the A/C evaporator core orifice body from the discharge line.

INSTALLATION
1. Lubricate the O-ring seals on the A/C evaporator core orifice liberally with clean Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B.
2. Place the A/C evaporator core orifice in the Fixed Orifice Tube Remover/Replacer T83L-19990-A and insert the A/C evaporator core orifice into the discharge line until the A/C evaporator core orifice is seated at the stop.
3. Remove the remover/replacer tool from the A/C evaporator core orifice.
4. Using a new O-ring lubricated with clean Motorcraft refrigerant oil YN-12b or equivalent meeting Ford specification WSH-M1C231-B, install the discharge line.
5. Leak-test, evacuate and charge the system. Observe all safety precautions. Service and Repair
6. Check the system for proper operation.