Expansion (Orifice Tube): Removal & Installation - Chevrolet Trailblazer Service Manual

Expansion (Orifice Tube)
Removal & Installation
To Remove:
1. Recover the refrigerant from the A/C system.
2. Remove the accumulator from the vehicle.
3. Remove the coolant reservoir from the vehicle.
4. Detach the evaporator tube from the evaporator.
5. Remove and discard the o-ring from the evaporator.
6. Detach the evaporator tubes from the block fittings.
7. Use a J 26549-E to remove the expansion tube from the evaporator tube.
To Install:
1. Use a J 26549-E to install the expansion tube into the evaporator tube, install the
shorter screen end first.
2. Install a new o-ring onto the evaporator.
3. Attach the evaporator tubes to the block fittings. Torque the nut to 21 ft-lb (28 Nm).
4. Attach the evaporator tube to the evaporator. Torque the nut to 21 ft-lb (28 Nm).
5. Install the coolant reservoir into the vehicle.
6. Install the accumulator into the vehicle.
7. Evacuate and recharge the refrigerant in the A/C system.
8. Use a J 39400-A halogen leak detector to leak test the component fittings.
9. Sensors, Switches & Valves
Expansion (Orifice) Tube Removal