Expansion Block/Orifice Tube: Service and Repair

EXPANSION (ORIFICE) TUBE REPLACEMENT (C60)

TOOLS REQUIRED
- J 26549-E Orifice Tube Remover and Installer
- J 39400-A Halogen Leak Detector

REMOVAL PROCEDURE




1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Remove the grille.
3. Disconnect the evaporator tube from the condenser (1).
4. Remove the O-ring seal.
5. Cap or plug the open line.
6. Use the J 26549-E in order to remove the expansion (orifice) tube (3) from the condenser outlet pipe (2).
In the event of difficulty during the removal or a restricted or plugged expansion (orifice) tube, take the following steps:
6.1. Remove as much of any impacted residue as possible.

IMPORTANT: Do not overheat the pipe.

6.2. Carefully apply heat with a heat gun (hair drier, epoxy drier, or similar item) approximately 7 mm (0.25 in) from the dimples on the inlet pipe.
6.3. While applying the heat, use the J 26549-E in order to grip the expansion orifice tube.
6.4. Use a turning motion along with a push-pull motion in order to loosen the impacted expansion (orifice) tube.
Remove the tube.

INSTALLATION PROCEDURE




1. Use the J 26549-E in order to install the expansion tube (3) into the condenser outlet pipe (2).
2. Install the new O-ring seal.
2.1. Coat the O-ring seal with 525 viscosity refrigerant oil.
2.2. Insert the short screen end of the new orifice into the evaporator tube.
3. Connect the evaporator tube to the condenser.
4. Install the grille.
5. Charge the system.
6. Leak test the fitting(s) of the repaired or reinstalled component using the J 39400-A.

For a description of the RPO Code(s) shown in this article/images refer to the RPO Code List found at Vehicle/Application ID RPO Codes