Extension springs are long, lighter-weight springs that run perpendicular to the door and are mounted above the horizontal portions of the door tracks. These springs are tensioned by stretching out, using cables and pulleys, as with the torsion system. Because extension springs are merely suspended between two brackets (they are not mounted to a rod, like torsion springs), they must have a safety cable running through each spring. This helps contain the spring in the event of a breakage. Without the safety cable, a spring breaking under tension is a very serious safety hazard. If you have old springs that don't have safety cables, you should install them even if you aren't replacing the springs.
I'm getting a good laugh on all the comments on "Garage Door Nation" on how easy they or people make it sound to order and change out their torsion springs. First off, if you do your shopping, the savings is about $50 - $75 having a company do it. Is it worth the 3 days wait without the use of your garage door, the safety risk and your time doing it yourself? If yes, then go for it!

10.4 Raise the second bar 90 degrees and insert the first bar. This is "three." Continue winding. If the spring shortens in length, unwind the spring and switch sides - the springs are on backward. Otherwise, continue winding until you reach a count of "30." This is 7 1/2 turns, which is normal for most 7' doors. Longer life springs are wound the same number of turns. Newer steel doors with only one strut on top often need only 7 1/4 turns. On 8' doors count to 34. Each time you insert a bar into the winding cone, listen for the click to let you know the bar is in all the way. Not inserting the bar all the way could cause the cone to explode. https://youtube.com/watch?feature=youtube_gdata&v=Z_eZc-kh40c


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.

The nucleus of any garage door system is its opener. Easily overlooked, garage door openers are highly complex pieces of equipment, often containing dozens of intricate parts that work simultaneously with one another to consistently raise and lower your door. You'll know that you're getting the best from Sears as it's the home to America's #1 Garage Door Opener Brand, Craftsman*.
Vincent was professional, informative, personable, efficient, and cleaned up his work area as he worked. I told him and now I am telling you... He my "Jordan" of garages. Give him a raise or at least a bonus. Thank you for sending him for my install. I am extremely pleased with my garage opener & with his install and information I am confident in its operation. Thank you.
Slide the left spring onto the tube and add the cable drum. When your new springs arrive, put the new left spring (the 1 with the end facing up and to the left) on the torsion tube, making sure that the stationary cone on the end of the spring faces the center bracket. After sliding the new spring into place, replace the cable drum and insert the torsion bar into the left bearing bracket.[9] http://www.youtube.com/v/Z_eZc-kh40c&feature=youtube_gdata
Garage door and their openers require basic maintenance. If an emergency occurs, you need to know that your door will open and close. Especially if you have children at home, check the sensors once a month to prevent potential injury. The force setting test lets you know that the door will stop if a child or object is in the way. The photo eye sensors will detect if a child or object is moving under the door and prevent the door from closing. In addition, a complete visual inspection of the system will help to show if something looks out of place or there is obvious damage. Lubricate your springs semi-annually. Investing a few minutes to keep your garage door in tip-top shape may prevent it from getting stuck halfway open or closed.

2.4 The same is true of Older Overhead, BarCol and Raynor torsion springs that have winding cones with inconsistent hole sizes. If you insert a 1/2" X 18" bar in some of these holes you can move the opposite end of the bar over four inches. Bars in newer cones move less than 1 1/2". I've had many of the older cones spin loose from my bars, the last one generating an $1800 emergency room bill. If your cones are like any of these, or if they have more than 2" of play, leave the job of installing torsion springs to a professional garage door mechanic.
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 $$$:

Garage Door Repair Cost Centennial Co


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.

With over 300 independently moving parts, your garage door is a deceptively complex piece of equipment. To help prevent malfunctions and break-downs, it is a good idea to occasionally perform a garage door tune-up to keep all of these parts in good working order. A regular tune-up service by a Sears professional can prevent unexpected door problems and prolong the life of your existing equipment. 

Garage Door Repair Emergency Centennial Co


2.1 Two important assumptions will help you execute this replacement safely. First, assume that the springs are going to break as you unwind or wind them. To avoid injury, clutch the bars firmly on the ends furthest away from the cones and stand securely on a sturdy ladder, not on chairs or cans turned upside down. Keep clothes and body parts away from the springs. Wear safety glasses.
Over time, the springs in your garage door can wear down and break. While the average cost to repair garage door springs is between $100 and $200, in some cases you may need to replace them instead. Replacement can cost $20-$30 for springs plus labor which can cost up to $180. Here are some signs to watch out for when determining whether repair or replacement is the right course of action: https://www.youtube.com/watch?v=Z_eZc-kh40c&feature=youtu.be
You can reschedule or cancel your service at any time. To reschedule, simply go to Your Orders, find your service order and click on the ‘Contact Provider’ button on Your Orders page. To cancel, click on the 'Cancel Order' button on Your Orders page. Payment goes to the pro from your secure Amazon account. Because you aren't charged until the actual work is completed, cancelling a job doesn't require a refund.

We arrived at a rental property and tried to open garage door to get our vehicle in so we could unload luggage, etc. Could not open from outside. Went into house and, from inside garage, tried automatic opener but this did not work. So in trying to open the door manually, I reached up and pulled on the red cord attached to a lever. What I could not see, and was not expecting, is that the rope was frayed through almost completely. The rope broke when I applied some weight to it, sending me backwards onto the floor of the garage.
The material and style of your door as well as the replacement parts needed will impact the total cost of your project. It would cost less to install a steel door with no opener then it would to install a wood door with an opener etc… High tech doors come with enery-effecient glaze and thick insualation as well as finshed interiors and other upgrades. These doors are more expensive but are more reliable and durable.
Thread the cables and tighten the drums. Run the lift cable between the roller and the doorjamb. Slip the lift cable stop through the cable slot on the drum. Then, attach locking pliers to the torsion tube to secure it in place. Spin the drum to wind the cable into the grooves, then tighten the set screws. Repeat on the other side, leaving the locking pliers in place.[11]
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.
Slide the left spring onto the tube and add the cable drum. When your new springs arrive, put the new left spring (the 1 with the end facing up and to the left) on the torsion tube, making sure that the stationary cone on the end of the spring faces the center bracket. After sliding the new spring into place, replace the cable drum and insert the torsion bar into the left bearing bracket.[9]
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