Expansion Block/Orifice Tube: Description and Operation

Evaporator Core Orifice

















Removal

1. Disconnect the evaporator inlet fitting.
- Discard the O-ring seal.

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

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





4. If the evaporator core orifice is broken, screw the end of the Damaged Evaporator Core 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-rings with clean PAG oil and install the evaporator core orifice using the Evaporator Core Orifice Remover/Installer.





2. Connect the evaporator inlet fitting.
- Install a new O-ring seal.

- Tighten to 18 Nm (159 lb-in).