Expansion Block/Orifice Tube: Service and Repair

Evaporator Core Orifice


Removal

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




1. Disconnect the condenser to evaporator line at the orifice tube. Refer to SPRING LOCK COUPLING.




2. Engage the special tool onto the A/C evaporator core orifice.




3. Hold the special tool T-handle stationary and rotate the special tool body to remove the A/C evaporator core orifice.




4. If the A/C evaporator core orifice is broken, screw the end of the special tool into the broken A/C evaporator core orifice.




5. Hold the special tool T-handle stationary and rotate the special tool body to remove the broken A/C evaporator core orifice.

Installation

1. Lubricate and install the O-ring seals on the A/C evaporator core orifice using PAG Compressor Oil.




2. Place the A/C evaporator core orifice into the special tool.




3. Using the special tool, insert the A/C evaporator core orifice into the condenser to evaporator line until seated.




4. Remove the special tool.




5. Connect the condenser to evaporator line at the orifice tube. Refer to SPRING LOCK COUPLING.
6. Recharge the A/C system. Refer to AIR CONDITIONING (A/C) SYSTEM EVACUATION AND CHARGING.