Expansion Block/Orifice Tube: Service and Repair
EXPANSION (ORIFICE) TUBE REPLACEMENTTOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Recover the refrigerant.
2. Remove the evaporator tube from the retaining clips.
3. Loosen the evaporator tube nut.
4. Separate the evaporator tube at the expansion tube location.
5. Remove the expansion tube from the liquid line.
INSTALLATION PROCEDURE
1. Install the new expansion tube. Ensure that the short screen faces toward the evaporator.
IMPORTANT: Lubricate the new expansion tube O-ring with mineral base 525 viscosity refrigerant oil before installing into the evaporator tube.
2. Connect the A/C evaporator tube.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the dual O-ring joint nut to 24 N.m (18 lb ft).
3. Connect the A/C evaporator tube to the retaining clips.
4. Recharge the A/C system.
5. Leak test the fitting(s) of the component using the J 39400-A.