Springs · Hamilton
Torsion Spring Replacement
One side of the door sits higher than the other in the tracks, and a lift cable is hanging slack or has jumped off its drum. On a two-spring door this often follows one spring letting go while the other keeps pulling.
Torsion Spring Replacement
In plain words
On a door with two springs, replacement usually starts with a conversation about scope. Both springs have completed the same number of cycles, so when one breaks the other is typically close behind, and replacing the pair together gives the door two matched springs sharing the load evenly. The technician explains what the installed system is, how each spring is loaded and what the door's weight calls for, then fits and winds the springs as a set. The result is a balanced door with a fresh cycle life on both sides rather than a repair that may be repeated soon.
How the visit goesThe door starts to rise, gets about the height of your knee, then shudders and reverses. The opener sounds strained, and the top section flexes as the trolley pulls on it, because the motor is doing work the spring used to do.
Hamilton
How the visit goes
Reading the spring itself
The first measurements come from the spring that is already on the shaft. The technician measures wire thickness across a run of ten or twenty coils, the inside diameter of the coil, the overall length of the spring when relaxed, and the wind direction, which is read from how the coils lean. On a two-spring door each spring is checked separately, because a left-wound and a right-wound spring sit on either side of the centre bracket. Any tag or colour marking is noted too. These numbers narrow down what the door was built with, and together with the door's weight they point to the correct replacement.
Balancing the door by hand
Once the clamps are off, the technician lifts the door by hand to about waist height and lets go. A balanced door stays where it is, or drifts only slightly. If it rises on its own, the spring has a little too much tension and is eased a quarter turn; if it drops, a quarter turn is added. The door is then run through its full travel, watching that both sides move together and the sections stay flat in the tracks. This is repeated until the door feels light and stops cleanly at several heights, which is the standard the whole job is measured against.
Through the seasons
The new spring has been set for the door as it is today, and the seasons are part of its life. Cold mornings make steel and grease a little stiffer, so the door may feel marginally slower in deep winter while still balanced; lubrication in autumn helps. Slush and road salt carried in on tires settle on the bottom brackets and cable ends, so a rinse and a light spray in spring slow corrosion where the cables anchor. Summer humidity is easier on hardware but rewards a dry, clean track. Small seasonal habits like these let the spring reach its full rated cycle count.
Torsion Spring Replacement
In the van
- Socket set and wrenches
- Locking pliers for the track
- End bearing plates
- Torsion springs, oil-tempered or galvanized
- Winding bars
What affects the quote
Same fees day, night or weekend
1Converting from extension springs
Moving a door from extension springs to a torsion system adds a shaft, bearings, drums and brackets, and removes the old pulleys, which is a broader job than replacing an existing torsion spring.
2Drum type and lift configuration
Standard-lift drums are the common case. High-lift, vertical-lift or low-headroom arrangements use different drums, cable lengths and turn counts, which changes the parts and the time involved.
3Opener reconnection and testing
Resetting force and travel limits and running the reversal and photo-eye tests are part of the visit. An opener with worn gears or a slipping trolley uncovered during testing becomes a separate item.
Torsion Spring Replacement: questions
Why does the door need to be balanced, and how is that tested?
Balance means the spring is holding almost exactly the door's weight, so the door neither flies up nor slams down and the opener only guides it. It is tested by releasing the opener, lifting the door to about waist height and letting go: a balanced door stays there. The technician fine-tunes in quarter turns of the spring until the door holds at several heights and travels evenly on both sides.
How can I tell if my springs are wearing out before they break?
Watch for a door that feels heavier by hand when the opener is released, an opener that strains or slows, a door that drops the last stretch rather than settling, or one that drifts down when stopped halfway. Visually, look for stretched gaps between coils, rust streaks or pitting on the steel, and any sag in the shaft. A balance check when you notice these lets you plan a replacement rather than react to one.
What about a garage with very little space above the door?
Low-headroom garages use a different arrangement: the spring assembly may be mounted at the rear of the horizontal tracks, or special low-headroom drums and track bring the door up with less clearance. Replacement follows the same principles, but the drums, cable routing and turn count differ. The technician identifies the system on arrival and brings hardware that suits it, so the door balances correctly in the space available.
Springs & Hardware
- Garage Door Hinge ReplacementThe car nudged the door on the way in.
- Garage Door Track Repair or ReplacementThe garage floor has settled at one corner, and the door now scrapes the concrete on that side…
- Garage Door Cable ReplacementYour older door has springs along the tracks, and one cable has slipped off its pulley and dangles…
Torsion Spring Replacement near you
Broken spring, snapped cable, door off the track, opener humming but not lifting, remote lost, seal cracked, panel dented, door too loud for the bedroom above: those are the calls we take from Hamilton, and each has its own service page explaining how we handle it.