1. Locate the air pressure regulators. They are usually located on the side of the truck near the rear axle.
2. Check the air pressure in the tires. The recommended tire pressure is usually listed on the sidewall of the tire.
3. Adjust the air pressure regulators. If the tire pressure is too low, turn the regulator clockwise to increase the air pressure. If the tire pressure is too high, turn the regulator counterclockwise to decrease the air pressure.
4. Repeat steps 2 and 3 until the tire pressure is correct.
5. Test the air pressure in the tires. Drive the truck for a few miles and then check the tire pressure again. If the tire pressure has changed, adjust the air pressure regulators again.
