Expansion Block/Orifice Tube: Service and Repair
REMOVAL PROCEDURETOOLS REQUIRED
J 26549-E Orifice Tube Remover and Installer
1. Recover the refrigerant from the system. Refer to Refrigerant Recovery and Recharging. Service and Repair
2. Remove the retainer from the evaporator case to the evaporator tube.
3. Remove the evaporator tube from the evaporator.
4. Use the J 26549-E in order to remove the expansion (orifice) tube (1).
5. Remove the restricted or plugged expansion tube:
^ Remove as much of the impacted residue as possible.
^ Carefully apply heat with a heat gun, or hair dryer 7 mm (0.25 inch) from the dimples on the inlet pipe.
DO NOT overheat the pipe.
^ While applying heat, use the J 26549-E in order to grip the expansion tube. Use a turning motion along with a push-pull motion to loosen the impacted expansion tube and remove.
INSTALLATION PROCEDURE
IMPORTANT:
^ Install the shorter screen end (3) first into the evaporator.
^ Coat the O-ring seal (2) with 525 viscosity refrigerant oil.
Use the J 26549-E in order to install the expansion tube.
NOTE: Refer to Fastener Notice in Service Precautions.
1. Install the evaporator tube to the evaporator.
Tighten
Tighten the evaporator tube to 28 N.m (21 lb ft).
2. Install the retainer to the evaporator tube to the evaporator cover.
3. Recharge the refrigerant to the system. Refer to Refrigerant Recovery and Recharging.
4. Inspect the system for leaks.