Ascender 4WD V8-5.3L (2004)
Expansion Block/Orifice Tube: Service and Repair
Expansion (Orifice) Tube Replacement (Body Vin Code 6)
Tools Required
J 26549-E Orifice Tube Remover
J 39400-A Halogen Leak Detector
Removal Procedure
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Remove the accumulator.
3. Remove the coolant reservoir.
4. Loosen the evaporator tube nut (5) from the evaporator.
5. Remove the evaporator tube from the evaporator.
6. Remove the nut (2) from the evaporator tube block (3).
7. Separate the evaporator tube at the block fitting (3).
8. Use the J 26549-E in order to remove the expansion tube (4).
9. Remove the O-ring seal and discard.
10. Remove the expansion tube (4) from the evaporator tube (1).
Installation Procedure
IMPORTANT: Install the shorter screen end of the expansion tube into the evaporator tube first.
