Expansion Block/Orifice Tube: Description and Operation

Evaporator Core Orifice

















Removal

1. Recover the refrigerant. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.

2. Disconnect the condenser-to-evaporator line fitting at the evaporator inlet tube.
- Discard the O-ring seals.

3. Inspect the evaporator core orifice for damage before attempting to remove it from the evaporator core inlet line.

4. If the evaporator core orifice is intact, engage the Fixed Orifice Remover/Installer. Hold the T-handle stationary while rotating the tool body to remove the evaporator core orifice.





5. If the evaporator core orifice is broken, screw the end of the Broken Orifice Remover into the broken orifice. Hold the T-handle stationary while rotating the tool body to remove the evaporator core orifice.





Installation

1. Lubricate the evaporator core orifice O-ring seals with clean PAG oil and install the evaporator core orifice using the Fixed Orifice Remover/Installer.





2. Install new O-ring seals and connect the condenser-to-evaporator line fitting at the evaporator inlet tube.

3. Evacuate, leak test and charge the refrigerant system. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.