Slide a grocery bag or piece of cardboard behind the spring to protect the garage door.
How to fix a garage door extension spring.
Loosen the unbroken spring.
Purchase new garage door extension springs.
Clamp a locking pliers or a c clamp to the track just above one of the rollers.
Spray each spring with garage door lubricant.
A garage door weighs tans and it would be close to impossible to move it shut and open without the help of the door springs.
The easiest way to do this is to take the broken spring to a local garage door dealer or home improvement center so they can help you find an exact match.
The new spring s diameter length and wire size or gauge must be the same as your old spring.
Shove a winding bar into a bottom hole of the winding cone of the good spring.