K 1500 Truck 4WD V8-6.5L DSL Turbo VIN S (1999)
Expansion Block/Orifice Tube: Service and Repair
Expansion (Orifice) Tube Replacement - RPO C60
REMOVAL PROCEDURE
TOOLS REQUIRED
J 26549-E Orifice Tube Remove and Installer
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging See: Refrigerant/Service and Repair
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.