Springs · Boston
Extension Spring Replacement in Boston
One of the springs beside the track is hanging loose at the front end, its pulley dangling, and a length of cable lies slack along the top of the door. The door sits slightly crooked and the opener reverses whenever it tries to close.
Extension Spring Replacement
In plain words
Every extension spring should carry a containment cable, and replacement is the moment to make sure yours do. A containment cable runs through the centre of the spring and is anchored at both ends, to the rear hanger and to the bracket at the front of the track. It does no lifting; its purpose is to hold a spring that breaks so the pieces stay on the cable. Many older doors predate this practice, which a home inspection checklist checks for. When springs are replaced, new containment cables are fitted with them, which keeps a broken spring's pieces contained, not the door's weight, balance or safety.
How the visit goesA bang like a dropped toolbox came from the garage last night. This morning one of the long springs beside the track hangs in two pieces, and the door will only rise a few inches before the opener gives up and stops.
Boston
How the visit goes
The rest of the door, and why the spring went
A spring rarely fails on its own, so the first look ends with the door it was lifting. The technician checks the rollers for cracked wheels and bent stems, the hinges for splits, the track for a bend or a bracket pulled off the jamb, and the bottom section for a dent that catches. The opener's force setting is noted, since an opener turned up to compensate for tired springs will overpower the new ones. And the history matters: a door recently fitted with insulation panels or windows weighs more than the springs were chosen for, and a door that has been closed onto snow or a bin has had its cables jolted.
Taking the old springs down
With the door open and clamped, each old spring is nearly slack, and removal is straightforward. The technician unhooks the lift cable from its S-hook or clip at the front, which lets the spring's pulley end drop free, then lifts the rear loop off the hanger. The old containment cable is unclipped from its anchors and pulled out of the coil. On a door with a broken spring, the two halves are gathered and the containment cable, if there was one, is inspected for the marks of having done its job. Everything that comes down is laid out on the floor so the old spring can be measured against its replacement and you can see the wear.
Checking the balance yourself
You can confirm the springs are still doing their share without going near them. With the door closed and nobody in the opening, pull the opener's red release cord so the trolley lets go of the door. Lift the door by its handle to roughly hip height and take your hands away. A door on good springs stays about where it is; if it sinks to the floor the springs have weakened, and if it rises on its own they are pulling harder than the door weighs. Either way it is a call rather than a job for you. Reconnect the opener the way your manual describes, usually by running it once.
Extension Spring Replacement
In the van
- Extension springs, matched pair
- Containment (safety) cables
- Pulleys (sheaves) and forks
- Garage-door spray lubricant
- S-hooks and adjusting clips
What affects the quote
Same fees day, night or weekend
1Weight added since the door went in
Insulation panels, windows or a wood overlay fitted after the original springs mean a heavier rating than the old pair. The door is weighed and the quote reflects the door as it is now.
2Converting to torsion instead
Where the garage has the headroom, some owners take the opportunity to move to a torsion system. That is a different job with different hardware and is quoted as its own option.
3Opener adjustment and testing
Resetting the opener's force and travel to the newly balanced door and running the reversal tests is a short task that the quote names when it applies.
Extension Spring Replacement: questions
What is the difference between extension springs and torsion springs?
They balance the door in different places. Extension springs are the two long coils that run beside the horizontal tracks and stretch as the door closes; they work through pulleys and cables. A torsion spring is wound on a shaft above the door opening and turns drums that wind the cables. The parts, the way tension is set and the service itself are different, so it helps to say which you have when you call.
What information helps when I call?
Whether the springs run along the tracks or sit above the door; whether one is broken, hanging loose or just looks stretched; whether the door is closed, open or stuck partway and level or crooked; roughly how wide and tall the door is and what it is made of; and whether there is a cable running through each spring. A photo taken from inside with the door closed answers most of that at once.
Why does the opener get adjusted after new springs?
Because the door is now much lighter for the opener to move. Over the years, as the old springs weakened, the opener's force setting may have been turned up to keep the door going, and its travel limits were set against a door that sat differently on the floor. Left alone, that extra force would push the newly balanced door too hard. Resetting force and travel, then repeating the reversal tests, matches the opener to the door it now has.
Springs & Hardware
- Garage Door Hinge ReplacementEvery time the door goes up there is a sharp pop from the same spot, about a metre off the floor…
- Garage Door Track Repair or ReplacementAfter a decade of slushy winters the bottom foot of the track is flaking rust.
- Garage Door Cable ReplacementSomeone left the snow shovel leaning in the opening and the door came down on it.
Extension Spring Replacement near you
Repairs, hardware, openers and new doors: those are the four kinds of garage door work we do in Boston. Most visits are repairs and tune-ups, springs and cables are the most common replacements, opener and remote problems come next, and new doors are planned with more time and care.