If the door closes but then immediately pops open again, you'll need to check the limit settings, which help the mechanism determine how far to move the door in order to close it properly. If the settings are off, the door will hit the ground before the opener believes it should. It will assume that it has hit an obstacle and will automatically backtrack to avoid damage. Check the owner's manual or the buttons on the motor to adjust the limit settings. It may take some trial and error to get the setting just right. http://youtube.com/watch?v=Z_eZc-kh40c
Inspect the area around your garage door to see if something is blocking the photo eye sensors. Then look at the tracks to see if there is any buildup on the inside. You’ll need to get a step ladder to look at the tracks on the top part of your garage, as it will be difficult to see from ground level. It may also not be a bad idea to proactively wipe down your garage door tracks periodically to prevent this type of buildup from occurring. Running a damp rag along each track should be enough to remove anything that’s lingering on the tracks. https://www.youtube.com/attribution_link?a=Z_eZc-kh40c&u=%2Fwatch%3Fv%3DXXXXXX%26feature%3Dshare
When a torsion spring is wound up, it grows 2” in length. This is because the spring starts to compress and the metal has to go somewhere. After the spring is wound, the winding cone is clamped down on the torsion shaft so it can turn the drums to wind the cables as the door goes up. Since the end of the spring is “set” on the shaft, a two-inch gap is left when the spring break's. This is the most definite way of determining you have a broken garage door spring.
You can choose from three basic types of steel door: (1) steel only; (2) steel with insulation on the inside; and (3) steel on both sides with 1-3/8 to 2 in. of insulation. Other features that add to the cost are thicker insulation and windows, especially insulated windows. The do-it-yourself tensioning systems also add a little to the door’s cost. Be sure to specify exactly what you want.
Whenever a spring breaks, the door will not go up. Attempting to lift a door with a broken spring can be extremely dangerous. Attempting to replace the springs yourself is even more dangerous. You should never attempt to fix a broken spring yourself – only experienced, trained professionals should ever touch torsion springs. Also replacing a spring requires expertise to know exactly which spring to replace it with. The correct springs are determined based off the weight of the door. There are hundreds of combinations of springs but only one is correct for your door. It is important to have the correct springs to prevent an array of problems in the future. With the wrong springs, your opener will break much quicker and your door is more likely to come off tracks. It is alarming how many installers use the wrong size springs. Knowing which springs to use can only be determined by experience.
If your door has two springs, most professionals and research online says that replacing both springs is the best option. Most torsion springs are rated for 10,000 close/open cycles. If only one of your springs is broken, both springs are still recommended to be replaced. Considering that your second spring will break soon anyways, this added on fix is only going to cost you about $50 extra to assure that you don’t have to pay another service fee for a second visit.
Sears garage repair technicians are fast, with same-day, emergency repairs available in most areas. We can replace garage door broken springs, rollers, cables, hinges, sensors and weather seals. We can also adjust garage door tracks and springs to make sure your door operates smoothly. Having problems with your garage door opener? We can repair or replace that too. Check out our line of Craftsman Garage Door Openers. Craftsman is America’s #1 brand of garage door openers! 1
6.10 If the garage door comes off the floor when you pull down on the bar, and if the cone still won't loosen, tap the bar next to the cone with a hammer to force the cone beyond the swollen portion of shaft. Maintain a firm grip on the bar; keep it firmly inserted completely into the cone; and be prepared at all times for the cone to slip, break, explode or break free from the shaft and yank the bar down.
Automatic doors require not only the installation of a heavy door, but the motor and cables as well. Automatic doors are much more common now because of their convenience, but in a case such as the heavy wood door, they are a necessity. A strong motor is required to pull up a heavy door. However, automatic doors are not without their faults -- they quickly become a manual door when the power goes out.
9.9 Go to the other side of the garage door and insert the end of the cable into the drum. Rotate the drum until the cable is tight. Slide the drum against the bearing and push the shaft to the right. The marks should line up. If they don't, figure out why and correct the problem. It could be a stuck cable, the garage floor may have shifted, or the vertical angle that helps support the bearing plate may have loosened and shifted. Many garage doors have been installed with a gap between a drum and a bearing plate. The cable drums should always be flush against the race of the bearings.