Short answer: Lift cables carry much of the door's weight, and a frayed or broken cable can leave the door hanging crooked.
Lift cables carry much of the door's weight, and a frayed or broken cable can leave the door hanging crooked.
What Cables Do
Steel lift cables work alongside the springs to raise and lower the door evenly. They wind onto drums as the door opens and carry significant load. Years of cycling, moisture, and rust gradually weaken them until strands begin to fray or a cable snaps.
Warning Signs
A door that hangs unevenly, sits crooked in the opening, or binds on one side often has a cable problem. Visible fraying near the bottom brackets or drums is a clear warning. Because cables share the load with high-tension springs, both systems should be inspected together.
Safe Cable Replacement
A technician releases tension safely, installs new cables of the correct length and rating, and re-tensions the system so the door lifts evenly. Replacing cables in pairs keeps both sides balanced and prevents the opener from straining against an uneven load.
Frequently Asked Questions
What Cables Do?
Steel lift cables work alongside the springs to raise and lower the door evenly. They wind onto drums as the door opens and carry significant load. Years of cycling, moisture, and rust gradually weaken them until strands begin to fray or a cable snaps.
Warning Signs?
A door that hangs unevenly, sits crooked in the opening, or binds on one side often has a cable problem. Visible fraying near the bottom brackets or drums is a clear warning. Because cables share the load with high-tension springs, both systems should be inspected together.
Safe Cable Replacement?
A technician releases tension safely, installs new cables of the correct length and rating, and re-tensions the system so the door lifts evenly. Replacing cables in pairs keeps both sides balanced and prevents the opener from straining against an uneven load.
How do I get help with this?
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