The winding and unwinding is done at a metal fitting, called a winding cone, attached to the outside end of the spring. You stick a winding bar into one of the four holes in the cone and use the bar as a lever to turn the cone. Once you've completed a quarter turn, insert the other bar into a different hole in the cone and let the bar lever against the closed garage door to hold the spring tension. This allows you to move the original bar to repeat the process, alternating the bars with each quarter-turn. It takes about 30 quarter-turns to fully tension a standard torsion spring.

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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.
5.1 With the cables still tight on the drums, mark the drums and torsion shaft at each end with a file or a marking pen. If at least one of the springs is still wound, don't touch the cable drums and don't grab the shaft. If the cable breaks, the drum could spin and the cable rip through muscle and bone. If the set screws aren't tight enough, the shaft could spin and cause injury.
11.2a Raise the garage door slowly. Check the door balance. If you have the correct springs the door should stay down when closed, half way when opened half way, and open when opened. If the door will drop to the floor by itself from the halfway point, add 1/4 turn of tension to each of the torsion springs. If the garage door won't stay on the floor, and if it pulls itself up when stopped halfway, close the door and remove 1/4 turn of tension from the springs.

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Insulation, which increases energy efficiency and can help to lower utility bills, is crucial when a garage door is attached to the home. In this case, doors with high R-values are preferred. This means it has insulation that can keep the heat in. The higher the R-value, the better insulated your garage will be against outside noise and cold and hot air.
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.

In this article, we’ll tell you the difference between a safe door and one that’s unsafe. We’ll also give you the helpful tips you’re not likely to find in the manufacturer’s instructions to correctly, and safely, install a new garage door with a torsion spring and do-it-yourself tensioning. Installing a new, double garage door yourself will save you several hundred dollars and should take eight to 12 hours if you’re fairly handy. You can do most of the new garage door installation project yourself, but you should recruit help for removing the old door.
Overhead Garage Door was prompt in keeping the appointment, efficient in their work and professional when they worked on my garage door. The garage door was broken and the technician couldn’t have been nicer or quicker in getting the door repaired. I don’t know when I’ve had such good service from anyone! To add to that already wonderful service, I then received a follow up from the owner asking me about my experience and to make sure my door was working well. I highly recommend Overhead Garage Door for all of your garage door needs.
Install the center bearing and the right spring, then secure the cones. Slide the torsion bar to the left then add the center bearing. Slide the right spring onto the bar and press the bearing into the stationary cone. Connect both of the stationary cones to the center bracket with the nuts and bolts you removed previously. Remove the locking pliers or clamp from the center bracket.[10]
As mentioned in issue #2, garage doors are designed with a reversing mechanism that prevents them from crushing objects in their path. If you find that your garage door closes part way and then goes back up, this can be triggered by objects on the ground blocking their path such as garbage cans or toys. It could also be caused by a buildup of debris on the tracks that prevents the rollers from moving forward. This could include small items like rocks, gum or mud buildup. If the door hits even a small object on the track, it will go back up to avoid crushing whatever is underneath it.
DIYers are generally steered away from working with torsion springs because installed springs are always under tension. To safely remove a torsion spring, you have to control the tension by holding the spring with a solid metal winding bar, then you loosen the spring from the rod and manually unwind the spring using two winding rods. The spring is potentially dangerous until it is fully unwound. By contrast, extension springs have little or no tension when the garage door is fully open.
So your garage door is acting up, but you aren’t sure what the problem is. Maybe the door spring is one possible culprit, but you’re not sure if that’s actually the problem or if it’s something else. In this quick list, we’ll go through the most common broken garage door spring symptoms. If your garage door is exhibiting one or a few of these symptoms, there’s a good chance it’s broken and needs replacing.

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Lower the door and dismantle it by removing the hardware. Lower a double door by recruiting at least two helpers to help with the weight, and place a 2×4 block under the door to prevent smashing a foot or finger when it’s lowered. Remove the sections one at a time by disconnecting the rollers and brackets. If you have windows, tape them to help control flying shards if they break. Then remove the old roller tracks and remaining hardware.
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.
SNAP... bang... boom. That is the sound of a garage door torsion spring breaking. It can be a very loud noise that sounds like a firecracker or gunshot. Springs are rated for a certain number of cycles and are the first thing that will break in your garage door assembly. Broken springs are the #1 source of customer calls for garage door repair companies. If you have a broken spring, you should NEVER try to open the door, as it can be very dangerous. This repair should be left to a professional or someone with the right tools and skills. 

A new garage door can add serious curb appeal, not to mention myriad home safety benefits. The cost of a new garage door will vary based on the type of garage door you want and the materials it will be made of. You can purchase a new garage door and have the pros install it for you, but proceed with caution as many installers won’t guarantee their labor if you didn’t purchase the garage door through their company. A new door (without installation) may cost anywhere from $200 to $4,000 or more, depending on size, brand and materials. Here are some examples of average new garage door costs, including installation:  
With Sears Garage Doors you can feel confident that you are getting the very best for your home and your family. All of our technicians are background checked, professional, and committed to complete customer satisfaction. The "best" is standard for all new Sears Garage Doors, Sears Garage Door Openers and Sears Garage Door Repairs. We offer some of the best warranties available in the industry, the best design advisors, the best technicians, and the best products. We may be a little biased, but we also believe we have the best customers. Go ahead, choose to be part of the best.
In addition to spring replacement, Aladdin Garage Doors provides expert garage door repair for your opener and garage door. Whether it’s cables, rollers, brackets, hinges, drums, gears, tracks, rails or any component that would cause your door to not operate properly, call us today to schedule an appointment or complete our online form.  Ask about our same-day service availability.
My garage door torsion spring broke so I decided to replace it myself. Shipping was next day. I got the torsion spring rod at a local hardware store. Easy to install once I figure out how to lock down the rod from moving and loosening the door cable on the side. Instructions tells you how to do it. Great replacement spring and save $$$ doing it myself. https://www.youtube.com/v/Z_eZc-kh40c&feature=youtube_gdata

Although garage door springs can break during any season and at any time, they most commonly break during the winter. This has to do with the temperature change. When the temperature sinks below a specific threshold, the metal will contract. This means it’s extremely possible for your door springs to shrink slightly during the winter months. This is hard on the springs and makes them more likely to break.

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Center and level the first section after you install the brackets. The door must be level even if the floor isn’t, so use shims under the section to level it. The rubber gasket on the bottom section will fill the gaps created by an unlevel floor. To hold the level in place, tape it to the section. To hold the section in place, lightly toenail a 16d nail into the frame and bend it over the section. Add brackets and rollers before setting them in place and stack one section on top of another, toenailing as you go up.
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