One-Piece Single Panel Garage Door Extension Spring Replacement

Replacing a one piece garage door extension spring

The following instructions demonstrate how to replace extension springs on a one-piece single panel garage door. On this garage door, there was no opener. If you have an opener, you will need to disengage the opener and unplug the power to the opener.


Get it right the first time!


Let's begin.

1. Open the garage door.
2. Attach a vise-grip to the track or support door with ladder or board.
3. Loosen the nut below the bottom of the first spring.
4. Remove the old spring.
5. The top pivot bolt on some doors has bearings that are worn. If your bearing or shaft is worn, replace it with bolts, nuts, and washers, and lubricate with wheel bearing grease as pictured.
6. Install the new spring.
7. Tighten the nut to its original position.
8. Repeat the process with the other spring.
9. Test the springs and adjust the bottom nut on each spring as needed.

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YES, WE'RE OPEN FOR BUSINESS! DDM is considered a life-sustaining company because we are an internet retail company that provides essential products. Due to the recent outbreak of Coronavirus, however, we are changing our local order pickup policy at our West Chicago location. To pick up an order you will need to order first. The quickest way is to order in advance through our online shopping cart. There you can select the local pickup option. Or, you can call 630-293-1337 for assistance, to confirm availability of parts, and to place your order. Once ordered, your parts will be available for pickup in the lobby of our north side front entrance. Longer items will be picked up on the south side loading dock. Please honor the six foot social distancing rule. Thank you for your patience and understanding as we all navigate this challenge together. More information is available on our blog titled DDM Adjusts to the COVID-19 Coronavirus. In the same article you will also find documentation and an answer to the question: "Is a garage door repair company a life sustaining business?"

PLEASE NOTE: DUE TO COVID-19 SHIPPING TIMES ARE NOT GUARANTEED, EVEN ON NEXT DAY AND SECOND DAY SHIPMENTS. NORMAL TRANSIT TIMES DO NOT APPLY.