Before we help you diagnose your stuck garage door, safety concerns can't be over stated. When trying to figure out how to fix a stuck garage door, it is important to take every safety precaution. Garage doors weigh hundreds of pounds and torsion springs hold a tremendous amount of energy waiting to be released, so without proper precaution it is possible to hurt yourself attempting to perform unauthorized repairs.
Using your drill, add tension to the torsion spring. This system uses a single spring for a double door, but many manufacturers use two springs for a double door. The painted line on the spring acts as a gauge for the number of turns you put on the spring. To keep the bar from turning while you’re adding tension, attach a locking pliers to the bar on both ends of the spring. Apply lubricant for garage doors to the spring.
Both types of springs are _loaded_, or under tension, when the door is closed. This gives them stored energy to help lift the door as it's being opened. When the door is all the way up, the springs are relaxed, or relatively so—they still may be under some tension. The mechanical difference between extension and torsion springs is that extension springs are loaded by stretching, or elongating, while torsion springs are loaded by twisting, creating torque.
Garage Door Repair Emergency Centennial Colorado
4.4 Take the spring on the left and place it at the left end of the door as pictured here. Notice that the end of the wire points to the right toward the center of the door. This is a right wind torsion spring. It will go above the garage door on the left side of the spring anchor bracket. The winding cone at the other end of this spring is usually painted red.