Expansion Block/Orifice Tube: Service and Repair
REMOVAL1. Discharge the refrigerant from the A/C system following the recommended service procedures. Observe all safety precautions.
2. Disconnect the condenser to evaporator tube from the A/C evaporator core using Spring Lock Coupling Disconnect Tool T83P- 19623-C (5/8 inch). Cap the condenser to evaporator tube to prevent the entrance of dirt and excessive moisture.
3. Pour a small amount of clean Motorcraft YN-12 refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B into the evaporator core inlet tube to lubricate the tube and O-ring seals during removal of the A/C evaporator core orifice from the evaporator core tube.
4. Engage the Fixed Orifice Tube Tool D80L- 19990-A or equivalent with two tangs on the A/C evaporator core orifice. Do not twist or rotate the A/C evaporator core orifice in the A/C evaporator core tube as it may break off.
5. Hold the T-handle of the Fixed Orifice Tube Tool D80L-19990-A or equivalent to keep it from turning and run the nut on the tool down against the A/C evaporator core tube 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 D8OL-19990-B into the A/C evaporator core tube 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 A/C evaporator core tube.
NOTE: If the A/C evaporator core orifice breaks in the A/C evaporator core tube, remove it from the tube with Broken Orifice Tube Extractor D80L-19990-B or equivalent as follows:
b. If only the brass center tube is removed during Step a.,insert the screw end of Broken Orifice Tube Extractor D80L-19990-B into the A/C evaporator core tube 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 A/C evaporator core tube.
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 Tool D80L-19990-A or equivalent and insert it into the A/C evaporator core tube until it is seated at the stop.
3. Remove the remover/replacer tool from the A/C evaporator core orifice.
4. Using new O-ring seals lubricated with clean Motorcraft refrigerant oil YN-12b or equivalent meeting Ford specification WSH-M1C231-B, connect the condenser to evaporator tube to the A/C evaporator core inlet tube.
5. Leak-test, evacuate and charge the system following the recommended service procedures. Observe all safety precautions.
6. Check the system for proper operation.