Torsion see above which mounts on the header above the door and extension photo 1 which floats above the upper roller track.
How to install garage door springs.
There are two types of garage door springs.
The doors with two springs are easy to replace.
Since extension springs are determined by how much weight they each lift and the pulley system cuts this in half you need to replace your old springs with 200 pound extension springs.
In the past extension springs were safer to install but didn t have containment cables running through the center of the spring.
In order to replace your garage door spring s you will need to find the current measurements in order to accurately replace the spring s.
One cable attaches to the bottom of the door runs up and over the pulley above the door and around the spring pulley and then attaches to the door track bracket.
Garage door springs come in two styles.
A couple of carabiners can.
This should take about 3 minutes and you don t need to remove the springs or loosen the tension to measure them.
Our springs are made to be a bit flexible so you don t have to get it to an exact measurement.
A pair of new springs cost about 25.