Expansion Block/Orifice Tube: Service and Repair

The plastic expansion tube is located in the evaporator inlet pipe.

When system diagnostics indicate a restricted expansion tube, it may not be necessary to replace it. Metal chips, flakes, or slivers found on the screen may be removed with compressed air. The expansion tube may be reused if:

^ The plastic frame is not broken.

^ The expansion tube is not damaged or plugged.

^ The screen material is not torn.

^ The screen is not plugged with fine gritty material.