Doors with extension springs have two sets of pulleys (which are sometimes called sheaves): one at the end of each spring and one at the top of the vertical door track. They also have two cables on each side. One cable attaches to the bottom of the door, runs up and over the pulley above the door and around the spring pulley and then attaches to the door track bracket. The other cables are safety cables that run through the middle of the springs and are fixed to a track bracket at both ends. These cables restrain the springs if they break under tension. All extension springs must have safety cables.
Regardless of the material, you will likely need to perform some regular maintenance tasks. A garage door professional can examine common problem areas to ensure all are working as they should. Additionally, it is necessary to examine the integrity of the door itself, since your garage can be especially vulnerable to security issues if your door is not structurally sound.
9.15 Install the bolts to secure the stationary center cones to the center bracket. Position the shaft here so it is the same distance from the header as the shaft is at each end. Finger-tighten the nuts until the stationary cones are flush against the center bearing plate. Forcing the cones by tightening the bolts may break a cone if it is catching on a bearing. Winding torsion springs with cracked cones can cause the springs to spin loose and the bars to fly. Secure the bolts.
If you need to leave the door open until you can make repairs, block the door track on both sides so the door can't move, and unplug the garage door opener (if you have one). If you want to close the door, you can try closing it with the opener, making sure there's nothing in the door's path in case something goes wrong. However, this will put some strain on the opener. Alternatively, you can have a few strong helpers hold the door while you disconnect it from the opener and carefully close the door manually—again, it will be very heavy.

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Sears Craftsman Garage Door Openers are America’s favorite. We have several options to choose from that will fit your individual needs. Sears garage door opener selections includes 1/2 horsepower, 3/4 horsepower, belt and chain drive as well as the Craftsman Smart Control garage door opener which allows you to control and monitor your garage door even when you are away from home.
In order to prevent injury, garage doors automatically reverse if they come into contact with an obstacle. When the door closes halfway but then reverses for no apparent reason, this may be a sign that there is something preventing it from closing, something that you can't see. Check the tracks for stuff like dirt, rocks, bits of trash, or other debris. Give the tracks a wipe-down to dislodge anything that might be getting in the way.
The Leading (scam) in the industry is the "LIFETIME WARRANTY". It sounds great when presented and seems fair and maybe even a good idea even though the initial cost seems pretty high (on average 450 - 700 dollars) what is not mentioned is the annual required cost (known as the required or annual door maintenance) to keep the warranty valid which if a standard 15,000 cycle spring/s is used should average Ten years, this annual service is usually 90 - 120 dollars. That would be another "900 - 1200" dollars invested in Ten years, that and the initial cost and you could buy two or more "complete new" doors in that time.
When it comes to installing garage doors and openers, The Home Depot has an unbeatable team of professionals dedicated to making sure your garage door project runs smoothly from start to finish. Your new garage door can be customized with a variety of features like unique color choices, window styles and hardware upgrades. We also offer options for your garage door opener including Smartphone control, Wi-Fi, battery back-up. The Home Depot installs garage doors and garage door openers with extended warranties that go beyond industry standards. Contact us today for a free in-home consultation.

When the car and other important equipment have been taken out, immediately remove the broken springs and replace it. The newly bought springs must be compatible with the door for it to function properly. Never attempt to close it without proper help and precaution and never leave it open if the supports are not stable. Always remember to call the technicians to ensure safety.
Remove the clamps and pliers from the torsion tube and track, and lift the door about 3 ft. by hand. If the door springs are properly adjusted, the door should stay in place when you let go. If the door falls when you let go, add a quarter turn to each spring. Repeat if necessary. If the door continues to open on its own, release spring tension in quarter-turn increments until the door stays in place when you let go. Then reconnect the opener.
As the door is opened and closed over time, the steel in the springs can start to weaken as the door gradually becomes too heavy for them, rendering them less effective. The springs will eventually break, leaving the door closed. Torsion springs can also be affected by rust and cold weather. The good news is, the average garage door torsion springs will last somewhere between 5-7 years, and should last around 10,000 cycles. So, if you open and close your garage door 3-5 times a day for over 365 days in a year, you should get plenty of life out of your torsion springs.

Single panel doors are constructed from one monolithic panel. From the closed position a single panel door swings up and overhead with a hinge on each side (known as jamb type hardware) to the fully open position. A disadvantage of monolithic panel doors is that the swing up arc of the door occurs partially outside the garage. This means a vehicle must stop and park several feet in front of the door to avoid being hit by the garage door when it is opened.


When a garage door service company gets a phone call in reference to a broken spring, the first thing the homeowner usually says is “the cables are broken”. This makes sense because the cables on a garage door will fly every which way, fall to the ground, become disconnected from the door, or even get caught in between the garage door and the jamb. It is rare for cables to break or need replacing when a garage door spring breaks. If your garage door has two torsion springs, the second spring will keep the cables tight and on the drums. You will have to look up at the springs to determine if one is broken.
11.2c If the springs you installed are too weak, and you wind the springs the correct number of turns, the door will be heavy at the floor, and it will not stay open half way, but it will stay open if raised completely. If tension is added to the torsion springs to lighten the garage door and to get it stay open half way, the door will be harder to close; openers often damage the new steel garage doors when they are too hard to close.
I went on Garage Door Nation website to look at the conversion chart from 1 to 2 torsion springs. For my 1 spring, size 2"/0.250ID/30.5" length, they recommended 2 of 2"/0.207ID/24" length. I got this kit from Amazon for $64 with $11 overnight shipping even though I could get free shipping through Prime over the weekend, but I couldn't wait for 3 more painful days. Installed it followed YouTube video. Worked better than my old one, a lot quieter. Check the video if you want to install one yourself. Professional installation costs hundreds of $$$: 

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A typical version of an overhead garage door used in the past would have been built as a one-piece panel.[1] The panel was mounted on each side with unequal parallelogram style hinge lifting mechanism. Newer versions of overhead garage doors are now generally built from several panels hinged together that roll along a system of tracks guided by rollers.[1] The weight of the door may be 400 lb (181.4 kg) or more, but is balanced by either a torsion spring system or a pair of extension springs.[2] A remote controlled motorized mechanism for opening garage doors adds convenience, safety, and security.[3]

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There are two types of garage door springs: torsion and extension. Torsion springs are horizontal and located near the top of the garage door. Check for a gap between these springs indicating a break. Springs on the sides of the garage door are extension springs. Inspect them to see if one or both of them have broken. If you have a broken spring, call a garage door technician to fix it for you as soon as possible. Never operate a garage door with a broken spring; it could severely damage the door and the operating system. Never attempt to replace a broken spring on your own, either. Replacing broken garage door springs is very dangerous for anyone other than a certified, professional repair technician. 

When it comes to garage doors, functionality and safety are equally important in the eyes of Sears Garage Door technicians. Our associates know the importance of garage door safety and the hazards that a faulty garage door can pose for your family. To confirm that your garage door and opener operate safely, our technicians perform a 20-point safety check during maintenance calls and repair jobs. This safety check verifies that any repair work performed has been done correctly and that there are no lingering safety problems with your door and mechanisms. If our technician discovers any safety concerns, he’ll advise you on the best way to proceed with correcting the problem.

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Torsion springs do not last forever, regardless of what some companies claim. “Lifetime” springs do not exist – all springs have a lifespan. Most builders typically install the lowest costing door available and with that generally comes lower cycle springs. A torsion spring’s life is determined by the number of cycles the spring is rated to last. Whenever the door goes up and down is what is referred to as a “cycle.” The springs that builders install can last as little as 7,500 cycles which means the average homeowner could get 3-5 years of life. http://y2u.be/Z_eZc-kh40c
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