Your dream car is parked in out of the elements, but it's not secure because the garage door won't lock. Most garage doors have two horizontal bars that move out from the center of the door into slots along the side of the door in the door track, effectively locking the door in place. Over time, these bars can shift slightly out of position so that they are no longer correctly aligned with the locking slots. To realign the bars, unscrew the guide brackets on the edges of the door so that they are loose enough to move, and then reposition them so that they smoothly guide the locking bars into the locking slots. Lubricate the lock mechanism with machine oil and you're done.
If your garage door track is out of alignment, it can be a serious issue. The metal track your door runs on needs to be aligned properly in order for your door to move. If you see gaps between the rollers and rail, or bends in the rails themselves, you have a problem. The heavy weight of the door can compound these issues and make them worse until it becomes dangerous to operate your door.
Torsion springs do not last forever, regardless of what some companies claim. “Lifetime” springs do not exist – all springs have a lifespan. Most builders typically install the lowest costing door available and with that generally comes lower cycle springs. A torsion spring’s life is determined by the number of cycles the spring is rated to last. Whenever the door goes up and down is what is referred to as a “cycle.” The springs that builders install can last as little as 7,500 cycles which means the average homeowner could get 3-5 years of life. http://y2u.be/Z_eZc-kh40c