Doing It Yourself
A broken cable looks simple from the floor: one strand, one spool, how hard can it be. The spring is still loaded on the other side of that drum, even with the door down, and that tension is what makes this a bad DIY job rather than a hard one. On a two-car door with torsion springs from the 1983-era build, the stored force is enough to snap a winding bar out of your hands or drop a 150-pound door section on a foot. We're not going to pretend there's a shortcut that makes this safe to do with a ladder and a socket set on a Saturday. If you're set on trying, at minimum clamp the track and never touch the spring, but honestly - this is one we tell people to just call for.
Parts We Carry
We carry galvanized aircraft cable in the diameters that match the drum sizes common on doors from the early-to-mid 1980s through the 1990s, plus the matching drums and bottom fixture brackets when the cable's failure has already chewed up the hardware it rode on. Northfield's housing stock runs mostly 1955 through 2004, with the bulk clustered in that 1980s-90s window, so the sizing we stock on the truck matches what we actually pull off doors out there most weeks. What we don't carry is every proprietary cable length for doors installed by builders who are long out of business - on those, we measure on site and may need a day to get the exact spec in.
The Complications
The cable itself is a cheap part. What turns a cable call into a longer job is what the cable was attached to. On original hardware from the 1983 era, we often find the drum grooves worn oval, which means a new cable just wears through faster if we don't replace the drum with it. Bottom brackets on doors this old were sometimes installed without the safety cable now required, and we won't put a door back in service without adding it. None of that is guesswork once we're looking at the door - it's just worth knowing going in that the part you called about isn't always the only part that needs attention.
Booking a Visit
Northfield sits about 14 miles from our shop in Farmington, and we route trips out that way as calls come in rather than keeping a truck parked locally - so tell us what the door is doing (one side low, won't open, door came off track) and we'll give you a straight window for the visit. See our coverage area for Northfield or the full cable repair page for Farmington for what a standard cable job runs and what we check before we call it done.
