ORIFICE TUBE REPLACEMENT
| CAUTION | Ford Fixed Orifice Tube (FFOT) is located in evaporator inlet pipe. Replace fixed orifice tube whenever compressor is replaced. |
Scheme 2
- Disconnect negative battery cable. Discharge A/C system using approved refrigerant recovery/recycling equipment. Disconnect liquid line at evaporator.
- To disconnect liquid line, fit appropriate spring lock coupling clamp to line. See SPRING LOCK COUPLING CLAMP table. Close clamp and push it into opening side of cage to expand garter spring and release female fitting. After garter spring is expanded, pull coupling apart. (Scheme 2) SPRING LOCK COUPLING CLAMP Refrigerant Line - Diameter In Inches Part Number 3/8 E1ZZ-19E576-A Or T81P-19623-G1 1/2 E1ZZ-19E576-B Or T81P-19623-G2 5/8 E35Y-19E576-A Or T83P-19623-C 3/4 E69Z-19E576-A Or T85L-19623-A
- Pour small amount of refrigerant oil into inlet tube to lubricate orifice tube and its "O" rings. Attach Orifice Tube Remover/Installer (T83L-19990-A) to 2 tangs on fixed orifice tube. (Scheme 3) NOTE: DO NOT twist or rotate orifice tube in evaporator inlet tube pipe, as it may break inside the tube.
- Hold orifice tube remover/installer "T" handle to keep it from turning. Rotate nut downward against inlet line until orifice tube is pulled from inlet tube. If orifice tube breaks in inlet tube, use Broken Orifice Tube Extractor (T83L-19990-B) to remove orifice tube. (Scheme 4)
- Insert screw end of extractor into inlet tube, and thread it into orifice tube. Rotate extractor nut downward against liquid line, and remove orifice tube.
- If only brass center tube is extracted, insert screw end of extractor into inlet. Screw end of extractor into fixed orifice tube body. Remove tube body from evaporator core line.
Scheme 3
Scheme 4
Installation
- Ensure replacement orifice tube is the same color as the one removed. Lubricate "O" rings on orifice tube with clean refrigerant oil. Place orifice tube into orifice tube remover/installer. Insert orifice tube into evaporator inlet tube until orifice tube bottoms.
- Remove orifice tube remover/installer. Install liquid line and new "O" ring lubricated with refrigerant oil on evaporator. Pull backward on liquid line to ensure proper seating of line. Leak test, evacuate and recharge system. Check system for proper operation.
Removal (Continental, Mark VIII, Mustang, Tempo & Topaz)
- Orifice tube, located in condenser-to-evaporator liquid line near condenser, can be identified by 3 indented notches or a circular depression in liquid line. (Scheme 5)
- Disconnect negative battery cable. Discharge A/C system using approved refrigerant recovery/recycling equipment. Remove liquid line by fitting appropriate spring lock coupling clamp to line. See SPRING LOCK COUPLING CLAMP table.
- Close clamp and push it into opening side of cage to expand garter spring and release female fitting. After garter spring is expanded, pull coupling apart. (Scheme 2) Remove liquid line.
- Locate orifice tube in metal portion of liquid line (3 indented notches or circular depression). (Scheme 5) Note angular positions of liquid line ends for reassembly. Cut a 2 1/2" section from tube at orifice location. DO NOT cut closer than one inch from start of bend in liquid line.
- Lubricate "O" rings with refrigerant oil. Assemble orifice tube kit on liquid line. (Scheme 6) Ensure replacement orifice tube is same color as one removed.
- Ensure flow direction arrow points at evaporator. While holding hex of liquid line in a vise, tighten each compression nut to 65-70 ft. lbs. (88-95 N.m). To complete installation, reverse removal procedure.
- Reconnect line using new "O" ring lubricated with refrigerant oil. Evacuate, recharge and leak test system. Check for proper operation
Scheme 5
Scheme 6
Removal (Escort, Probe & Tracer)
- Orifice tube is located in line near condenser. Disconnect negative battery cable. Discharge A/C system using approved refrigerant recovery/recycling equipment. Disconnect liquid line at condenser.
- To disconnect liquid line, fit appropriate spring lock coupling clamp to line. See SPRING LOCK COUPLING CLAMP table. Close clamp and push it into opening side of cage to expand garter spring and release female fitting. After garter spring is expanded, pull coupling apart. (Scheme 2) Remove liquid line.
- Using Orifice Tube Remover/Installer (T83L-19990-A), remove orifice tube from line. (Scheme 3) If orifice tube breaks in inlet tube, use Broken Orifice Tube Extractor (T83L-19990-B) to remove orifice tube. (Scheme 4)
- Ensure replacement orifice tube is the same color as the one removed. Lubricate "O" rings on orifice tube with clean refrigerant oil. Place orifice tube into orifice tube remover/installer. Insert orifice tube into evaporator inlet tube until orifice tube bottoms.
- Remove orifice tube remover/installer. Install liquid line and new "O" ring lubricated with refrigerant oil on evaporator. Pull backward on liquid line to ensure proper seating of line. Leak test, evacuate and recharge system. Check system for proper operation.
Note. On Sable and Taurus, orifice tube is not serviced separately. Liquid line must be replaced as an assembly.
Removal & Installation (Sable & Taurus)
- Orifice tube is located in line near condenser. Disconnect negative battery cable. Discharge A/C system using approved refrigerant recovery/recycling equipment. Disconnect liquid line at condenser.
- To disconnect liquid line, fit appropriate spring lock coupling clamp to line. See SPRING LOCK COUPLING CLAMP table. Close clamp and push it into opening side of cage to expand garter spring and release female fitting. After garter spring is expanded, pull coupling apart. (Scheme 2) Remove liquid line.
- Install new liquid line and new "O" ring lubricated with refrigerant oil on evaporator. Pull backward on liquid line to ensure proper seating of line. Leak test, evacuate and recharge system. Check system for proper operation.