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.
Like any mechanical part, garage door springs deteriorate due to normal wear and tear. Over time, the steel that makes up the springs weakens until they eventually break. Under normal circumstances, garage door springs have a life expectancy of 10,000 cycles of opening and closing. This equates to five to seven years, but along the way, there may be signs of problems that can occur before the springs actually stop working.
Weather conditions can make rails expand or contract slightly, which requires a little extra pressure from the opener to compensate. Turning the force-adjustment screw increases or decreases the force. However, adjusting the force is not something to play around with unless you are confident you know what you’re doing. The force adjustment signals the opener to stop and reverse when objects are detected in the closing path. Too little force and just about anything will trigger it to stop, but too much force and the garage door might not respond to resistance from something or someone in the path when the door is trying to close.
Aging garage door springs cause the door to effectively "weigh" more as the steel loses its resiliency. With new springs, a heavy garage door should take no more than about 10 pounds of force to lift into an open position. With springs nearing the end of their lifespan, the force required to lift the door can be considerably more, since a garage door may weigh 200 pounds or more.
Garage doors are able to move due to a counterbalance system that usually consists of a torsion spring. We often find incorrect springs have been installed which result in an unsafe door that you may not be able to open manually when needed. The balance of your garage door should be tested annually to reduce wear on your garage door opener and ensure it can be opened if an emergency situation arises. Because of the dangers involved with torsion springs, garage door spring repair and installation should only be done by experienced professionals like our Medics.