How To Replace An Extension Spring On A Garage Door

Disengage the broken extension spring one end at a time.

How to replace an extension spring on a garage door. If both springs are old you should replace them both at the same time. At this point you can place the safety cable clip onto the end of the new extension spring. There are no cables or pulleys to deal with and the springs have internal safety rods. 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. Once in place disconnect the. At the far end of the door rail remove the spring end from its mounting pin. Do not try to remove the extension spring that is not broken when the garage door is closed.

Purchase new garage door extension springs. Thread the safety cable through the spring and tie it to the vertical bracket. Open the garage door to remove all spring tension and clamp it in place. 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.

The new spring s diameter length and wire size or gauge must be the same as your old spring.