Middle Keys
Extension Spring Repair in Marathon
Extension spring repair in Marathon is for the long coils that stretch beside the horizontal track. People usually search it when a spring looks like a loose coil hanging above the car. A broken coil is dangerous because only the safety cable keeps it from flying across the bay. Color bands on the coil are not a full specification for ordering the replacement. A torsion cone does not repair this layout, so the visit stays with the side springs.
Where these springs usually live
Extension springs stretch along the horizontal track, mostly on older single-car doors in daily use. A broken one often looks like a loose coil drooping above the parked car. The safety cable runs through that coil so a break does not throw steel across the bay. You may also see one side of the door hanging lower than the other side. The door can feel suddenly heavy because one spring is no longer helping it rise.
Leave the coils parked
Leave the door parked and keep people out of the opening after a coil lets go. Do not touch the coils, the pulleys, or the safety cable, even if the loose part looks simple. Color paint on the spring is only a clue, and it does not name the right part. A torsion tool on this layout will not rewind anything useful at all. Wait with the door where it stopped, and keep hands off the hardware.
Cable pulleys and the pair
We replace the broken extension spring and inspect the safety cable that runs inside it. Both pulleys get a look, because a flat pulley chews the next cable. If one spring has failed, the mate is checked for the same stretch and rust. The door is balanced after the new spring is on, so the opener is not doing all the lifting. A door that stayed straight usually needs springs and cable, not a new section.
Why a torsion cone will not fit
A torsion cone belongs on a shaft above the door, and it cannot rebuild side springs. The color bands narrow the guess and still leave length and stretch to be measured on this door. We measure the old spring and the track, then match a spring that fits this opening. Pulleys and cable are part of that match, because the new coil has to run true. Putting a shaft kit on a side-spring door is a different project than this repair.
How older bays carry these
Some canal-front houses and some interior blocks in Marathon have side springs on older doors. A few park at grade under the living floor, so the coils sit in moving air. Humidity and salt on open bays can rust the safety cable that should hold a broken coil. The highway is not the driveway, so the layout is read beside the track at the house. A loose coil overhead is the same failure whether the bay is open or closed.
Request this visit.
Call (645) 256-1794 about this door.
We answer any hour Sunday through Friday.
Saturday stays closed.
Keys Door Co is family-owned, local, and insured.
We have worked this coast for over ten years.
Common questions
What does a broken extension spring look like?
A broken extension spring often looks like a loose coil drooping above the car. The safety cable is what keeps that coil from flying across the bay. Leave the door parked, and do not handle the coils or the cable.
Are the color bands enough to order a spring?
Painted bands narrow the guess, and length plus stretch still have to be measured on the door. Two springs can share a color and still differ in the pull they give. The door and the track decide the spring, not the paint alone.
Can a torsion part fix this kind of spring?
A torsion cone does not repair springs that stretch beside the track. Those side springs need their own cable, pulleys, and a matched coil. The visit stays with that layout instead of converting the door to a shaft.
Place reference: City of Marathon
Request service
Name the street and whether the door is up, down, or stuck.
- Repairs and replacement parts
- Openers and controls
- New garage doors