Cable Repair for Raritan's 1980s Garage Doors

Stocked Parts

Most garage doors in Raritan went up around 1987, a full generation newer than the 1966 median across the rest of our service area, which means torsion hardware instead of the older extension-spring setups we still find on earlier builds. That matters for parts. A door from this era almost always takes standard 1/8-inch, 7x19 galvanized aircraft cable and a drum sized for a 7-foot door on a two-inch shaft - common stock, not something we need to special-order. We carry these sizes on the truck when we come out from Princeton. Where it gets slower is if a house here had an oversized or custom door added later - those sometimes take a cable length or drum diameter we don't carry as standard, and that means a short wait while we order it. We won't pretend otherwise; it's the one gap in an otherwise same-day inventory.

Doing It Yourself

A torsion spring holds real tension, and the cable sits right next to it - this is not a project to learn on. What you can safely do yourself is look. Open the door by hand (power off at the opener) and check the cable where it wraps the drum, up near the top corner of the track. Frayed strands, a kinked loop, or a cable that's slipped off the drum groove are all signs to stop using the door and call rather than keep running it on the opener. In a cold snap, a cable that's gone stiff or visibly rusted at the bottom roller bracket is also worth flagging before it snaps under load rather than after.

What the Fix Involves

The spring gets unwound and locked off first - that's the step that makes the rest of the job safe to do by hand. From there the drums come off each end of the torsion shaft, the old cable comes out, and new cable gets seated in the drum groove and run down to the bottom bracket under even tension on both sides. On a door built around 1987, the track itself has usually never been touched, so we check it for the slight bow or rust pitting that nearly four decades can put into galvanized steel before we re-tension anything against it. If the opener's travel limits or force settings were never adjusted after the original install, we reset those too, since a new cable running against old force settings will just wear unevenly again.

How Long You Are Without the Door

The door is down for the length of the visit itself - it's a single-trip repair, not a job that gets scheduled in stages. Travel is the one variable worth naming honestly: we come from Princeton, about 18 miles out, so the appointment window accounts for that drive rather than a local dispatch. Once the cable's run and the spring's re-tensioned, the door gets tested through several full cycles before we leave, which takes longer than the repair itself but is the part that keeps a cable job from coming back as a callback.

The Complications

Central New Jersey sits in a cold, severe winter band, and cable failure here tracks the cold more than age alone - a cable that's fine in August can snap in January once the galvanizing has pitted and the steel's gone brittle. On a house built in 1987, there's a decent chance the cable, drums, and even the bottom brackets are original, which means whatever we find on one side of the shaft often shows up starting on the other side within a season. The other complication is less about the cable and more about what it's attached to: if a drum has worn unevenly or a track bracket has pulled loose from the jamb over the years, replacing the cable alone won't fix the shake or drift in the door, and we'll say so rather than replace cable and send you off with the same symptom.

What It Costs

We don't publish a flat number because door width, spring configuration, and whether the drums need replacing along with the cable all move the price. What we can say is that households in this part of our service area carry a median income of $159,808, well above the $108,851 median across the rest of the area we cover - in practice that means we're usually replacing both cables and both drums as a matched pair rather than patching one side, since the second cable is close behind the first on a door this age. If a drum is grooved or the shaft is bent, that gets priced in before we start, not added after.

Frequently asked questions