Garage door springs offset the weight of the door and allow it to open and close with ease. A problem with the spring tension could cause the door to open or close unevenly, improperly, or at the wrong speed, and adjusting the springs will likely solve the problem. Garage doors come in different styles that use two different types of springs, and whether you’ve got an easy fix on your hands or a more difficult and dangerous task will depend on what style of door you have. You may be better off seeking the services of a professional if your door has torsion springs, especially if you don’t have the proper tools, have no experience, or lack a mechanical background.
Torsion garage door springs are mounted above the door and will run along a metal shaft that’s parallel with the top of the door. Lighter and smaller garage doors may only have a single torsion garage door spring, while larger and heavier garage doors may have two garage door springs, with one located on either side of the central plate.
There are two kinds of garage door springs your garage door might use: side-mounted extension garage door springs or torsion garage door springs. Side-mounted extension garage door springs run above and parallel to the door track, and they’ll have an attached pulley and cable. The cable, which holds the garage door spring, attaches to hooks in the track hanger assembly. There will be two garage door springs: one above each track on either side of the garage door.