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.

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Doors come with one or two torsion springs. If either spring is broken, the garage door opener may struggle to lift the weight of the door or fail to open the door at all. If a spring is broken, call a professional for service as these can be very dangerous to work with. Don’t try to open the door until a professional comes to inspect it and replace the springs. Springs can only be used for a certain number of open and close cycles, and over time they will eventually break and need replacing.
9.12 It is now time to secure the torsion springs in the middle. For various reasons, many installers will offset the center bracket several inches from the center of the door. Offsetting the bracket makes it easier to work around the opener bracket without causing any problems in the operation of your garage door, but offsetting the bracket is not necessary. If you have a slotted center bracket, remove the vise grip and lube the shaft where it turns inside the bushing. Position the shaft so it is the same distance from the header as it is at each end. The shaft should be straight and parallel to the header.
There could be a few issues that might be causing your transmitters not to work properly. The most common reason could be that you’re simply out of range of your garage door. Each garage door and transmitter combo has a specific range it will function in. If you’re trying to open your garage door before you can even see your house, then chances are you’re just too far away. Try waiting until you turn into your driveway to hit your transmitter button, and you should have more success opening your garage door on the first try. http://youtube.com/embed/Z_eZc-kh40c

If the track is misaligned, but the door still moves, there are a few things you can do to attempt to remedy the issue on your own. You’ll know that it’s misaligned if you hear a rubbing noise when the garage door reaches a certain spot on the tracks each time it opens and closes. Sometimes the door may even slow down slightly when it hits this spot.
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!
No matter what kind of door you are installing, be very careful. The instructions that follow are merely guidelines. You should read your garage door manufacturer's instructions and owner's manual very carefully before attempting either type of installation. And if you're a do-it-yourself greenhorn, skip this project and hire an experienced professional. It may be more expensive, but garage door installation is on the higher scale of DIY difficulty.
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.
Delivered on time, with the products described: springs, winding bats, & plastic bushing. Quick install, but apparently I measured wrong, so these total length I bought was larger (which is good as there is less stress on the spring). However this did mean that I needed more than the generic rule of 30 1/4-turns of preload. I wound up with 38 1/4-turns per side for the door to balance when open 3' (per familyhandyman.com recommendations). Would definitely do it again.
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.
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