Replacement spring procedure took me exactly 1 hours including preparation and clean-up for double aluminum garage door. Watch the DIY video on Youtube, save $$, be careful with winding the torsion springs. Rule of thumb: 7' height door garage= 7' x 4 (each 1/4 turn) + 1 = 29 turns (1/4 turn), 8' height door garage = 8' x 4 + 1 = 33 turns (1/4 turn), and so on....
The spring system opens and supports the garage door. These springs are under heavy force, which allows the door to bounce back open and avoids overburdening the garage door opener with the entire weight load. If these springs are stuck or broken, the whole system is affected. Start by lubricating the springs with non-silicon-based lubricant. If this fails, disconnect the garage door opener from the garage door to manually open the door. If you experience significant resistance, the springs might need to be replaced; a job that requires a professional.
Once the springs break, quite a bit of tension is put on the door cables, and they will often break next. When these cables break, they will snap and forcibly fly out like a broken rubber band. Think about how much it hurts to be snapped by a broken rubber band, and then multiply it by a hundred to account for the size and weight of the garage door cables.
Garage door torsion springs are usually the first to break or give out among the many components of your garage door. This is because the springs bear a lot of pressure, supporting the entire weight of your garage door which can oftentimes be quite heavy. Through regular and continued use, garage door springs are usually stretched tight and subject to wear and tear.
10.1 It is now time to wind the new springs, but before doing so, I recommend marking the shaft just beyond the winding cone. This is a final step taken to assure that you have installed the springs on the correct sides of the center bracket. Torsion springs always grow in length when they are wound in the proper direction. If your spring does not get longer as you wind it, you are winding it the wrong direction probably because it is improperly installed. We recurrently get calls about springs coming loose from the cones at about 6 turns. If this happens, switch the springs.