How do you access the orifice tube on a 1986 Toyota pickup?

To access the orifice tube on a 1986 Toyota pickup, first, locate the A/C system's expansion valve, which is typically near the evaporator inside the dashboard. You will need to remove the dashboard or the A/C housing to reach the evaporator. Once you have access to the evaporator, the orifice tube can be found in the liquid line; simply disconnect the line to remove the tube. Be sure to recover any refrigerant and follow proper safety protocols when working on the A/C system.