How You Should Release The Tension In A Garage Door Spring


The most dangerous part of replacing a broken spring on a garage door is releasing the tension in the spring. The tension in the spring can make it spin around quickly, and if the broken end hits you, it could result in serious injury to your hands and/or arms. If you're working on your own broken garage door and have never released the tension in one of the springs, here is how you should do it so you don't get hurt.

You Will Need:

  • C-clamp
  • 18" Winding Bar
  • Wrench
  • Step Ladder
  • Protective Eyeglasses
  • Heavy Duty Gloves

Clamp Door

The first thing you want to do is secure the door so no one can lift it up while you are working. Shut the garage door so you can access the spring over the top of it and place a C-clamp into the rail. The C-clamp should be placed over the top of the bottom roller in the rail.

Place Ladder

You don't want to work directly in front of the spring in case it spins around and strikes you. Instead, place the ladder slightly to the side of the end of the spring where the winding cone is located. This will be the furthest point away from the rail on the one side of the garage door.

Releasing the Tension

There is a metal winding cone at the end of the spring. The cone has four holes in it where you will place the winding bars. There is also a set screw on the cone which holds the spring in place and keeps it from unwinding. The set screw is screwed onto a bar that runs across the top of the door. The spring is wrapped around the bar.

Put on your protective eyeglasses and gloves. Take one of the winding bars and place it into the bottom hole so the bar rests against the top of the garage door. If the spring starts to unwind unexpectedly, it will unwind counterclockwise and the winding bar against the top of the door will stop it from spinning.

Slowly turn the set screw on the cone counterclockwise to loosen the spring. Slide a winding bar in the hole above the winding bar against the garage door and hold onto it tightly. Carefully slide the winding bar resting against the garage door out of the winding cone. All the tension in the spring will now be on the second winding bar. Lower the second winding bar until it rests against the garage door. Take the first winding bar and place it in the hole on the winding cone just above the second bar and repeat the procedure. Keep on repeating the process until the spring hangs loosely and there's no more tension in it. You can now safely go about removing the broken spring so you can put a new one on the garage door.


4 October 2016

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