Garage Door Repairs in Mount Pleasant: Snapped Torsion Spring Replaced
The single torsion spring on a Mount Pleasant sectional door snapped clean in the middle, leaving the door too heavy to lift. We fitted a new correctly-sized spring, balanced the door and had it running again the same visit.
Service
Spring Replacement
Location
River View Terrace, Mount Pleasant
Door Type
Sectional
Job Type
Repair
Result
New torsion spring fitted and balanced — door back in service in one visit.
Job Summary
Problem
Torsion spring snapped in two — the door wouldn't lift.
Diagnosis
Spring failed at end of cycle life; shaft, drums and cables sound.
Solution
New high-cycle spring sized to the door, wound, balanced and safety-tested.
Result
New torsion spring fitted and balanced — door back in service in one visit.
Customer Problem
This Mount Pleasant sectional door runs on a single torsion spring, and it let go with the usual bang — the two halves sitting apart on the shaft with a clear gap between them. From that moment the opener was trying to lift the whole door unaided, which it can't and shouldn't do. The homeowner sensibly left the door closed and called.
- Single torsion spring snapped mid-coil
- Door dead weight — opener unable to lift it
- Door left closed until repaired — the right call
Inspection & Diagnosis
A clean mid-coil break with even wear along the spring is the signature of a spring that simply reached the end of its cycle life — not damage or a fitting fault. We measured the door's weight and the old spring's wire size and length to match a replacement exactly; an undersized spring leaves the door heavy, an oversized one makes it fly up. Cables, drums and the shaft bearing were checked and retained.
- Clean fatigue break — end of cycle life
- Replacement spring matched to door weight and old spring dimensions
- Cables, drums and centre bearing serviceable
Solution
We fitted a new high-cycle torsion spring, wound it to the door's specification and balanced the door so it holds at half height by hand. The opener's force settings and safety reversal were re-checked and the hinges and rollers lubricated. Total time on site: well under an hour.
- New high-cycle torsion spring fitted and wound to spec
- Door balanced by hand at half-height
- Opener force and safety reversal re-tested
- Hinges and rollers lubricated
Before & After
Before — the spring snapped clean through the middle
After — new high-cycle spring wound and balanced
Parts & Work Completed
- High-cycle torsion spring
- Balance, limit & safety-reversal test
- Lubrication service
Frequently Asked Questions
Only if you must, and only with two people: without the spring, a double sectional door can weigh well over 100 kg and it will slam if you let go. It's safer to leave it closed and call us — we attend Mount Pleasant same-day with the common spring sizes on board.
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