C 3500 HD Truck 2WD V8-8.1L VIN G (2002)
Expansion Block/Orifice Tube: Service and Repair
EXPANSION (ORIFICE) TUBE REPLACEMENT (C60)
TOOLS REQUIRED
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J 26549-E Orifice Tube Remover and Installer
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J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Remove the grille.
3. Remove the evaporator tube nut from the condenser (1).
4. Remove the evaporator tube from the condenser (1).
5. Remove the O-ring seal.
6. Cap or plug the open line.
7. 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:
7.1.
Remove as much of any impacted residue as possible.
IMPORTANT: Do not overheat the pipe.
7.2.
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.
7.3.
While applying the heat, use the J 26549-E in order to grip the expansion orifice tube.
7.4.
Use a turning motion along with a push-pull motion in order to loosen the impacted expansion (orifice) tube.
Remove the tube.
INSTALLATION PROCEDURE
