The doors with two springs are easy to replace.
Youtube how to change garage door springs.
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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.
Depending on where you live doing this garage door spring replacement job yourself might save you 200 or more.
A couple of carabiners can.
Detailed how to video on how to change out garage door torsion springs.
There are two types of garage door springs.
A few years back i narrowly avoided being hit by a spring that snapped.
Diy garage door torsion spring replacement step by step how to video.
Doors with extension springs have two sets of pulleys which are sometimes called sheaves.
In this video you ll learn how to spot and replace a garage door extension spring.
A pair of new springs cost about 25.
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.