South Dade
Extension Spring Repair in Goulds
Extension spring repair is for the coils that stretch beside the horizontal track, common on older single-car doors. A broken one looks like a loose coil above the car, and the door on that side goes heavy. The safety cable running through the coil is what keeps a broken spring from flying. Color bands on the coil are not a full specification for the replacement. A torsion cone does not repair this layout, because the springs are a different system.
A loose coil above the car
The spring stretches along the horizontal track and helps lift that side of the door. When it breaks, the coil bunches or hangs, and the door feels heavy on the way up. The matching spring on the other side has lived the same cycles and is usually tired too. A bang, then a door that will not stay up, is the usual way people find the break.
Leave the coils parked and untouched
Leave the door parked, and do not touch the coils, the pulleys, or the safety cable. Keep people out of the opening, because a broken coil can still move if the door is run. Hands stay off the set screws and any shaft hardware while the door waits. Do not try to stretch the broken coil back into place or tie it up with household cord.
Replace the pair and then balance
The broken spring is replaced, and the mate is replaced too so both sides match. The safety cable is installed through the new coil so a future break stays contained. Pulleys and the cable that runs to the bottom bracket are checked for fray and flat spots. The door is then balanced, and a torsion cone is not used to repair this side-spring layout.
Color bands are only a hint
Painted bands on an old coil are a clue to size, and the wire still has to be measured. Wire diameter, stretched length, and the door weight decide the spring that goes on. A hardware-store coil with similar colors can be the wrong pull for this door. Both new springs are the same hand of work, so one fresh coil is not paired with a tired mate.
Older single doors and damp air
Modest older slab houses here often still use this side layout on a single-car door painted more than once. Humidity rusts the coils and the safety cable inside them long before the painted skin looks finished. A roof that holds heat speeds that rust, and age is why one coil lets go on an ordinary morning. Some driveways sit close to US-1, and grit on the pulleys wears the cable that runs beside the spring. Age and humidity are why a loose coil here is replaced as a pair, with the safety cable renewed.
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 loose coil above the car mean?
A loose coil above the car is usually an extension spring that has broken beside the track. The door gets heavy on that side, and the safety cable is what kept the coil from flying. The spring on the other side has usually lived the same number of cycles.
Do the colored bands tell you which spring to buy?
Color bands are only a hint and do not name the wire size or the pull this door needs. The spring is read from the door weight and the wire, then both sides are replaced together. A coil chosen only by color can leave the door heavy or make it fly up.
Can a torsion spring part fix this door?
A torsion cone fits a shaft above the door, and this door uses springs beside the track. That cone does not repair the side layout or the safety cable inside the coil. The pair, the cable, and the pulleys are the repair for this system.
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Name the street and whether the door is up, down, or stuck.
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