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