Broken Torsion Spring Replacement
Broken Torsion Spring Replacement is a spring-only service from Garage Door Spring Repair USA. This page explains broken torsion spring replacement in full: what the job covers, how it is sized, and what a finished broken torsion spring replacement job should feel like, so you can tell a complete job from a rushed one.
Safety note for broken torsion spring replacement: Spring tension work during broken torsion spring replacement is trained-technician work. Do not wind, unwind, or adjust a spring under tension at home during broken torsion spring replacement, and do not force a broken-spring door with the opener.
What a broken torsion spring looks like
A torsion spring sits on a shaft above the door and twists to hold the door's weight. When it snaps, you will often hear one loud bang, then find the door will not lift, or lifts only a few inches before stopping. A visible gap in the coil is the clearest sign, and the door will feel far heavier than usual if you try it by hand.
Do not keep running the opener against a broken torsion spring. The opener is built to nudge a balanced door, not to lift an uncounterbalanced one, so forcing it can strain the motor, bend the top section, or let the door drop. Leave the door where it is, keep people and cars clear of it, and get the spring checked before anything else is tried.
How a proper torsion replacement is sized
A replacement is not chosen by door width alone. The technician measures wire size, inside diameter, relaxed length, and wind direction, and checks door weight and height, because a spring that is too weak will not balance the door and one that is too strong will pull it up unevenly. Colour marks vary by maker, so measuring beats guessing from colour alone.
Both springs on a two-spring door have done the same cycles, which is why pair replacement is discussed on its own page. If only the snapped spring is changed, the older spring beside it can fail soon after and leave the door unbalanced again.
What happens during the job
The door is secured, tension is released safely by a trained technician, the broken spring is removed, and the matched spring is fitted on the shaft. The door is then wound to the correct tension, tested for balance at waist height, and run through its full travel to check for jerking, uneven lift, or cable slack.
Cables, drums, and the centre bearing are inspected at the same visit, because a spring job that ignores a frayed cable or a worn drum is unfinished work. The safety-reverse test is run last, so the door stops and reverses as it should if it meets an obstruction.