What Is on the Truck
For a 1966-era extension-spring door, the truck carries what that hardware actually needs: extension springs in the common sizes, replacement lift cables, pulleys, and the safety cables that should be threaded through the springs but often aren't on original installs. We also carry torsion springs and drums for the houses in the area that have already been upgraded - not every garage here is still running original hardware, and we don't assume.
What we don't carry is a wide stock of proprietary opener boards or door panels for less common brands. If your opener is an older unit with a part that's out of production, or a panel that's a discontinued color or profile, that's a special-order job, not a same-visit fix. We'll tell you that on-site rather than promise something the truck can't deliver.
Booking a Visit
We come out to Thornton from our Lodi location, about 10 miles off. Call and tell us what the door is doing - whether it's stuck down, stuck up, dropped on one side, or the opener is running but the door isn't moving. That tells us which springs, cables, or drums to load before we leave, so the first trip is the only trip more often than not.
We don't have a branch or drop box in Thornton itself - the whole area gets covered from the Lodi shop, which is why what you tell us on the phone matters more here than it would for a job five minutes from base.
Can You Do This Yourself
Swapping a broken extension spring is within reach for someone comfortable with hand tools, as long as the door is fully down and the opener is disconnected before anything gets touched. Where people get hurt is winding torsion springs without the right bars, or working under a door held up by nothing but a broken cable's worth of tension. If you're not sure which system you have, that's the point to call rather than guess - a spring under tension doesn't give you a second chance to figure it out.











