To adjust spring tension, qualified personnel should loosen all of the set screws in the tensioner and axle support at both ends of the door. At the tensioner end, they'll place a pipe wrench around the end of the axle so that pulling down on the pipe wrench will rotate that axle to increase spring tension. Nov 16, 2020
Why Does My Garage Door Stop and Go Back Up? A garage door that stops and goes back up is usually due to malfunctioning infrared sensors. If there is such an issue, you can see one of the sensor lights blinking. Malfunctioning sensors can be caused by a blockage, dirty eyes, loose wires, or just bad sensors in general.