How To Replace An Extension Spring On A Garage Door

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.

How to replace an extension spring on a garage door.

At the far end of the door rail remove the spring end from its mounting pin. Disengage the broken extension spring one end at a time. Once in place disconnect the. The following steps will walk you through how to replace an extension garage door spring.

As a side note you should replace both springs at the same time because your garage door won t close properly if one spring has more tension than the other. Do not try to remove the extension spring that is not broken when the garage door is closed. At this point you can place the safety cable clip onto the end of the new extension spring. Purchase new garage door extension springs.

The new spring s diameter length and wire size or gauge must be the same as your old spring. 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. If both springs are old you should replace them both at the same time. On one piece doors with side springs you open the door to relieve the spring tension and simply swap out the springs on the opener arm mechanism.

Detach the cable and thread it around the pulley to free the spring.