Purchase new garage door extension springs.
Replacing a garage door extension spring.
The following steps will walk you through how to replace an extension garage door spring.
The new spring s diameter length and wire size or gauge must be the same as your old spring.
Open the garage door to remove all spring tension and clamp it in place.
Some garage door openers have a neutral position for the trolley disconnect.
How to replace a garage door extension spring step 1.
At the far end of the door rail.
If you have an older opener you may need to remove a fuse or flip.
With a second set of hands to help you along manually lift the door off the ground and lock.
Disengage the broken extension spring one end at a time.
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.
Get it right the first time.
Replacing garage door extension spring safety cable.