CAUTION! Replacing garage door torsion springs is dangerous because the springs are under tension. If you do not use the right tools and follow safe procedures, you could lose hands, limbs or even your life. You could also damage property. We want your business, but not at the expense of your well being. Doing the job right is your responsibility. If you have any doubts about your ability to safely change your springs, we recommend you hire a professional to repair your garage door. Safety First! Then work.

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In most cases, only one spring breaks or wears out at a time, and you can get away with replacing just the failed spring. But this is a little like replacing old car tires one at a time. You'll get the best performance if all the springs are new and have the same strength. Extension springs are replaced individually, making it more tempting to replace just one. With torsion springs, you have to disassemble everything to replace either spring, so it makes sense to swap out both springs during the repair.
Unlike torsion springs, replacing extension springs has long been given the "green light" for DIYers, primarily because you can complete the job without having to deal with spring tension. The general process is simple and safe: open the door to relieve the spring tension (and secure it open with C-clamps in the tracks); disconnect the spring from the track bracket and the spring pulley, and disconnect the safety cable from one end; install the new spring, reinstall the pulley, and reconnect the safety cable, and you're done. https://www.youtube.com/v/Z_eZc-kh40c&feature=kp

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.


Grab a tape measure and press the hook between two spring coils and note the length of 20 coils. Then measure 40 coils. Convert the measurements to a decimal (4-1/2 in. to 4.5 in., or 4-1/8 to 4.125, for example). Divide the two measurements by 20 and 40 to obtain the spring's wire diameter. Here's an example: 4.50 divided by 20 = .225-in. wire diameter; 9.0 divided by 40 = .225-in. wire diameter. If the two results match, you've measured correctly.

Locating a contractor - there are many professional overhead garage door companies. It is always advisable to contact at least three different agencies and request a bid or quote for the work. Be sure that each quote includes the costs for a few different types of doors, any installation fees, and the cost of wiring the electronic openers. Standard prices range from:
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.
If you’ve tested and tried to remedy these other problems and you’re still having issues, you may need to reprogram your transmitter. All transmitters have a learn button somewhere on the remote, so first you’ll need to locate that on your transmitter. Press and hold the learn button for a few seconds until the indicator light starts blinking. While the light is blinking, press your remote button again to reprogram that remote. http://www.youtube.com/watch?v=Z_eZc-kh40c
2.3 Beware of older winding cones. These older Crawford and McKee torsion spring cones were made for 5/8" bars. Sometimes, however, the holes are too small for 5/8" bars. Whatever you do, don't use a 1/2" bar; instead, grind down a 5/8" bar to fit. I recently had a McKee spring let loose after winding because I used a 1/2" bar when my 5/8" bar wouldn't fit. Just before it let loose I was telling myself, "This is not safe." And it wasn't. The only safe way to replace these older springs is to make a winding bar for each hole of each cone.

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Most residential garage doors have one of two types of springs: torsion or extension. Torsion springs are heavy-duty springs mounted to a metal rod that runs parallel to the door, directly above the door opening. These springs are loaded, or tensioned, with a twisting action. When the door closes, cables attached to the bottom corners of the door pull on pulleys attached to the ends of the metal rod the springs are mounted on. The pulleys turn the rod, which twists the springs and creates tension. When the door is opened, the springs unwind and help lift the door. https://www.youtube.com/attribution_link?a=Z_eZc-kh40c&u=watch?v=XXXXXX&feature=share
A garage door is a large door on a garage that opens either manually or by an electric motor (a garage door opener). Garage doors are frequently large enough to accommodate automobiles and other vehicles. Small garage doors may be made in a single panel that tilts up and back across the garage ceiling. Larger doors are usually made in several jointed panels that roll up on tracks across the garage ceiling, or into a roll above the doorway. The operating mechanism is spring-loaded or counterbalanced to offset the weight of the door and reduce human or motor effort required to operate the door. Less commonly, some garage doors slide or swing horizontally. Doors are made of wood, metal, or fiberglass, and may be insulated to prevent heat loss. Warehouses, bus garages and locomotive sheds have larger versions.
If one of your door springs just broke and you are looking for instructions to decide if you can change the spring or springs safely and correctly, this page should help. DO NOT OPEN AND CLOSE YOUR GARAGE DOOR. Wooden garage doors are heavy and will probably damage or ruin the opener. The tops of steel doors often bend when operated with broken springs.

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If you notice that the garage door opens normally but doesn’t make any attempt to close when the remote is pressed, the first thing you’ll want to do is visually inspect the photo eyes. Over time, these eyes can get dirty, causing the light from the beam to be blocked. They also can eventually become misaligned, causing the eyes to not match up on both sides.
Locating a contractor - there are many professional overhead garage door companies. It is always advisable to contact at least three different agencies and request a bid or quote for the work. Be sure that each quote includes the costs for a few different types of doors, any installation fees, and the cost of wiring the electronic openers. Standard prices range from:
A1 Garage Door Service is known for providing only the best value for money. We always aim for the best possible customer service and experience, reasonable costs for our products and services, give FREE estimates and FREE professional advice as well as amazing deals and discounts when you book our service. What’s more, we GUARANTEE that we service all manufacturer warranties, including lifetime warranties. What more can you ask for? https://youtube.com/v/Z_eZc-kh40c?version=3

The average cost is $190 for 2 springs in the Detroit area. This is for steel doors weighing under 140 lbs or known as a standard spring which fits 90% of all doors. The remaining 10% are wood doors or large heavy insulated doors. Expect to pay an additional $60 - $100 for a set of these. Garage Door Companies rarely carry these springs on their vehicles or stock them. Therefore, they either buy them locally at a premium or special order them. Regardless, its an additional trip that gets figured into the cost.
Homeowners have long been warned that torsion springs are extremely dangerous to work with and that replacing them must be left to a professional. But these claims are somewhat exaggerated. If you understand how they work, and you pay attention to what you're doing, you can replace them safely and surprisingly easily. Granted, they're a little spooky to work with at first (partly due to their reputation), but this is a good thing—you really don't want to forget that they're under tension. Thinking about every step — before you take it — is the key to staying safe. 

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9.4 Slide the end of the shaft into the end bearing plate. Tighten the set screws an additional 1/4 to 1/2 turns beyond the point you finger-tightened them. Add an additional 1/4 turn if you could not find the original set screw indentations in the previous step. Heavier wooden garage doors may require an additional 1/4 turn. Caution: Under-tightening the drums could cause the drum to slip and the door to cock or fall. Over-tightening the set screws could damage the shaft or drum, resulting in the same problems. This is a critical step.
6.13 Lower the second bar to the top of the garage door as you did the first bar. If your shaft is distorted inside the cone, you may need to tap the bar with a hammer as you unwind the spring. 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 snap loose from the shaft and jolt the bar down.

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One of the best ways to care for your springs is to check them over for wear. You can certainly look at them for damage, but sometimes the damage isn’t something that’s visible. In these cases, try lifting the garage door up from the ground. About halfway up, let go. If the door stays, the springs are still working perfectly. If the door sags or drops at all, this could be a sign that your springs are beginning to weaken and will need replacing soon.

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The technician did a wonderful job - arrived on time and completed the job in less than 2 hours. I would have given him a 5 on everything if he had returned to add the additional piece (a piece that is fixed to the door frame for better insulation) to my door on the outside on the day he said he would come back. The piece he brought was of wrong color and he said he would be back with the right color the first day after New Year's Day to put up the piece. I hope he can come back soon.

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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. https://youtube.com/watch?v=Z_eZc-kh40c
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