A pair of new springs cost about 25.
How to install a garage door side spring.
This tension makes it easier to lift the garage door from its closed position.
The springs extend along the shaft and work by twisting as the garage door closes by means of cables attached to each side of the lowest garage door panel.
Use locking pliers or a c clamp to secure the door to the track to keep it from opening when you release the tension on the springs.
There are two types of garage door springs.
A couple of carabiners can.
The doors with two springs are easy to replace.