TrailBlazer 2WD V8-6.0L VIN H (2006)
Expansion Block/Orifice Tube: Service and Repair
Expansion (Orifice) Tube (Short Wheel Base)
EXPANSION (ORIFICE) TUBE REPLACEMENT (SHORT WHEEL BASE)
TOOLS REQUIRED
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J 26549-E Orifice Tube Remover
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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. Remove the evaporator tube nut (3) at the evaporator (1).
5. Remove the evaporator tube (4) from the evaporator (1).
6. Remove the O-ring seal and discard.
7. Remove the nut from the evaporator tube block fitting.
8. Separate the evaporator tubes (4,6) at the block fitting.
9. Use the J 26549-E in order to remove the expansion tube.
10. Remove the expansion tube from the evaporator tube (6).
INSTALLATION PROCEDURE
1. Use the J 26549-E in order to install the expansion tube.
IMPORTANT: Install the shorter screen end of the expansion tube into the evaporator tube (6) first.
2. Install the new O-ring seal.
3. Assemble the evaporator tubes (4,6).
4. Install the evaporator tube nut.
Tighten the nut to 28 N.m (21 lb ft).
