What Uneven Cable Tension Looks Like
A garage door with uneven cable tension often tilts to one side while it travels, closes with a visible slant, or leaves a gap along the bottom on one corner while the other corner seals normally. You might also notice one cable riding loosely on its drum while the opposite cable stays taut, or hear an odd creak as the door strains against the imbalance.
This is different from a door that simply will not move at all. With uneven tension, the door usually still operates, but it looks crooked, drags against a track, or puts extra strain on the rollers and hinges on one side of the frame.
What Causes Uneven Cable Tension
A few common issues tend to lead to uneven cable tension on residential garage doors.
Over years of daily cycles, one cable can stretch or fray slightly more than the other, which changes how much slack sits on each drum and tilts the door.
If a cable drum shifts on the torsion shaft, the winding pattern becomes uneven, so one side lifts faster or slower than the other during each cycle.
When torsion springs lose calibration relative to each other, the extra strain often gets transferred to the cables, making one side pull tighter than the other.
A bent track, loose bracket, or worn roller on one side can make the door bind unevenly, which can look like a cable tension problem even when the cables themselves are fine.
Signs You Should Stop Using the Door
DIY Checks vs When to Call for Help
Some basic checks are safe from the ground, but cable and spring adjustments involve stored tension and are best left to a technician.
Safe Visual Checks
Look at the cables and tracks from a distance without touching them, watch how the door moves through a full cycle, and note which side seems to lift unevenly.
Avoid Hands-On Cable Work
Cables are attached to a system under spring tension, so loosening, tightening, or rewinding them yourself can cause sudden movement and is not something to attempt alone.
When to Request Service
If the door tilts, one cable looks slack or frayed, or the opener is straining, it is a reasonable time to request a free quote so a technician can diagnose the imbalance safely.
Not Sure What You Are Looking At?
If you are unsure whether what you are seeing is normal wear or a cable tension problem, a technician can inspect the door and explain what is happening before anything gets worse.
Why Professional Adjustment Matters
Rebalancing cable tension usually means adjusting the drums, checking spring calibration, and confirming the tracks are still square, all while the system is under load. This is different from simple maintenance tasks like tightening hardware or cleaning tracks.
A technician working on a Macon garage door can measure the tension on each side, identify whether the cause is drum position, cable wear, or spring imbalance, and recommend a fix based on what they find rather than guessing from the outside.