F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
A/C Evaporator Core Orifice: Service and Repair
The A/C evaporator core orifice is constructed with a plastic body, two screens and a small brass tube down the center of the A/C evaporator core
orifice. Two O-rings are around the A/C evaporator core orifice to seal against leakage.
SPECIAL SERVICE TOOL(S) REQUIRED
Spring Lock Coupling
Description
Tool Number
Spring Lock Coupling Disconnect Tool Set
T84L-19623-B
Fixed Orifice Tube Tool
D80L-19990-A
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 tube. To
do so will break the A/C evaporator core orifice in the tube. Use only the recommended tool following the recommended service procedures.
REMOVAL
1. Recover refrigerant from air conditioning system following recommended service procedures. Observe all safety precautions. See: Service and
Repair/Refrigerant Recovery
NOTE: Cap all open refrigerant lines and components to prevent entry of dirt and moisture into the A/C system.
2. Disconnect condenser to evaporator tube from A/C evaporator core using Spring Lock Coupling Disconnect Tool Set T84L-19623-B. Cap
condenser to evaporator tube to prevent entrance of dirt and excessive moisture.
3. Pour a small amount of clean refrigerant oil into inlet tube to lubricate tube and O-rings during removal of A/C evaporator core orifice from tube.
4. Engage the Fixed Orifice Tube Tool D80L-19990-A or equivalent with the two tangs on the A/C evaporator core orifice.
5. Hold T-handle of Fixed Orifice Tube Tool D80L-19990-A or equivalent to keep it from turning, and run nut on tool down against tube until A/C
evaporator core orifice is pulled from tube.
CAUTION: Do not twist or rotate the A/C evaporator core orifice in the tube. It can break off in the tube.
6. If A/C evaporator core orifice breaks in tube, it must be removed from tube with Broken Orifice Tube Extractor D80L-19990-B or equivalent.
7. To remove a A/C evaporator core orifice, insert screw end of Broken Orifice Tube Extractor D80L-19990-B or equivalent into tube. Thread screw
end of tool into brass tube in center of A/C evaporator core orifice. Pull A/C evaporator core orifice from tube.
8. If only brass center tube is removed during above step, insert screw end of the Broken Orifice Tube Extractor D80L-19990-B or equivalent into
tube and screw end of tool into A/C evaporator core orifice. Pull fixed A/C evaporator core orifice from tube.
INSTALLATION
