One at the end of each spring and one at the top of the vertical door track they also have two cables on each side.
How to install garage door springs.
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.
Garage door springs come in two styles.
Our springs are made to be a bit flexible so you don t have to get it to an exact measurement.
This should take about 3 minutes and you don t need to remove the springs or loosen the tension to measure them.
A couple of carabiners can.
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.
A pair of new springs cost about 25.
The doors with two springs are easy to replace.
Doors with extension springs have two sets of pulleys which are sometimes called sheaves.
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.
Torsion see above which mounts on the header above the door and extension photo 1 which floats above the upper roller track.