Springs · Brant
Garage Door Cable Replacement
The cable has wrapped itself around the shaft above the door instead of sitting on its drum.
In plain words
What you get back is a door that behaves as it did when it was new. Both corners rise and fall together, the bottom seal meets the floor along its whole length, and the opener runs without straining or reversing. Because the cables were set to the same length and the springs re-tensioned to match, the door can be lifted by hand with light effort and will hold steady halfway up. You also leave with a note of the cable specification, drum type and spring turns, which makes any future service simpler, and a few habits that keep the new cables in good shape.
How the visit goesSomeone left the snow shovel leaning in the opening and the door came down on it. Now a loop of steel cable hangs loose beside the track and the door refuses to close the last few inches.
Garage Door Cable Replacement
How the visit goes
The drums and their set screws
On a torsion door the cable drum is where most trouble starts or shows. The technician checks that each drum is tight on the shaft and that its set screws have not loosened and let it creep, which shortens the effective cable on that side. The groove is inspected for wear ridges, cracks and burrs that would chew through a new cable, and the slot that holds the cable stop is checked for damage. Where the old cable jumped its groove, the drum is examined for the mark it left and for whether the drum or an obstruction under the door was the cause. A worn drum is replaced with its mate.
Balance, travel and the opener
With the springs wound and the clamps off, the technician lifts the door by hand. It should rise with light effort, hold still at roughly waist height, and settle to the floor without slamming; that is the balance test, and the spring turns are adjusted until it passes. The door is run through several full cycles by hand while the cables are watched on the drums. Then the opener is reconnected, its travel limits and force settings are checked against the newly balanced door, and the reversing test with a block under the door and the photo-eye test are carried out. You see each of these done.
A clear threshold
Most cables that jump their drums do so because the door came down on something. Keep the opening clear of bins, bikes and the snow shovel, and in winter clear the ridge of packed snow and ice that forms at the threshold before running the door. If the door does meet an obstruction and stops, leave it where it is rather than pressing the button again, since a second attempt is what turns a slack cable into a tangled one. The photo eyes near the floor should be clean and aligned so they catch anything in the path; a wipe with a soft cloth each season keeps them working.
Garage Door Cable Replacement
In the van
Bottom rollers and hinges
Galvanized aircraft-type lift cables
Cable drums, matched pair
Track clamps or locking pliers
Winding bars
Garage Door Cable Replacement
What affects the quote
Condition of the bottom brackets
A bracket bent by a bumper or corroded by years of salt is replaced while the system is unloaded. New brackets, roller and fasteners are listed as their own line.
Oversized, commercial or high-lift doors
Doors taller or wider than a standard residential opening, or fitted with high-lift hardware, use heavier cables and drums and take longer to set up, which the quote reflects.
Springs found weak or broken
If the inspection shows a spring that is broken, stretched or wound short, replacing it is explained and priced separately from the cable work, and the two are done in one visit if you agree.
What to have ready
- Is there one spring above the opening, or springs stretched along the tracks?
- Is anything stored close to the door or under the spring shaft?
- Do you have the door's manual or a label showing the model?
Garage Door Cable Replacement: questions
QuestionsHow long do lift cables usually last?
Cables tend to live about as long as the springs they work with, often ten years or more on a door used a few times a day, and less on a door that sees heavy use or a wet, salty floor every winter. Rather than a calendar, watch the condition: fraying, rust near the loop or a slack side are the signs the set is due.
Can a cable be too long or too short for the door?
Yes, and both cause trouble. A cable that is too long runs out of drum groove and starts a second layer over the first, which wears it and throws the balance off near the top of travel. A cable that is too short leaves the door hanging out of level or the drum without a secure wrap. The correct length comes from the door height, the drum and the lift type, so the technician measures rather than guesses.
What should I do while waiting for the visit?
Leave the door in the position it is in and stop using the opener. Move the car and anything else you need out of the garage by another door if you can, and clear the floor near the door so the technician has room to work. If a cable jumped because the door closed on something, leave the object where it was; it helps explain what happened.
Related services
- Garage Door Hinge ReplacementPressing a hand against one of the middle hinges makes it rock on the panel.
- Garage Door Track Repair or ReplacementThe garage floor has settled at one corner, and the door now scrapes the concrete on that side while daylight shows at the other.
- Torsion Spring ReplacementYou heard a sharp bang from the garage, and now the opener hums for a second and gives up.