Springs · Toronto
Extension Spring Replacement in Toronto
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.
In plain words
Choosing the right spring is a matter of weight, not colour. Extension springs are rated for the weight they are meant to lift, and the correct pair for your door is found by weighing the door itself with the opener released, then checking that figure against the wire size, coil diameter and length of the old springs. Paint colour on the end coil is only a hint; older springs fade, get overpainted or were never quite right to begin with. A pair matched to the measured weight gives a door that holds at half height and lifts with one hand, and an opener that works lightly.
How the visit goesThe door climbs with the left corner ahead of the right, then twists as it turns into the ceiling track. Looking up, the spring on the right side is stretched longer than its partner, with daylight showing between the coils.
Extension Spring Replacement
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.
Bringing the opener back into step
The opener is the last thing touched. Once the door balances by hand, the trolley is reconnected and the door run through several full cycles under power while the technician watches the cables ride their pulleys and the springs stretch evenly. Because the door is now lighter to move than it was on tired springs, the opener's force and travel settings are reset to suit; a force setting left high would push a balanced door too hard. Then the reversal checks are done in front of you: a block laid flat under the centre of the door, which the door must touch and reverse from, and a hand passed through the photo-eye beam while the door closes.
A clear threshold and an honest opener
Two habits protect the new springs from the shocks that shorten a spring's life. The first is the floor: a door that comes down on a bin, a bike wheel or a ridge of packed snow stops short while the springs and cables are still pulling, and the jolt can throw a cable off its pulley. Keep the opening clear and scrape the ice ridge off the threshold before running the door in winter. The second is the opener's force setting. It was set for the newly balanced door; if the door ever seems to need more push, that is the springs asking for attention, not a reason to turn the force up.
Extension Spring Replacement
In the van
Extension springs, matched pair
Rear spring hangers and angle iron
Door-weighing scale
Pulleys (sheaves) and forks
Bottom brackets and clevis pins
Extension Spring Replacement
What affects the quote
Rollers, hinges and bottom brackets found worn
Cracked roller wheels, split hinges or a bottom bracket rusted at the cable pin are pointed out during the inspection and offered as optional items, since the door is already open and secured.
Condition of the lift cables
Cables with fraying, rust at the loop or a kink are renewed as a pair while the springs are off. Sound cables are re-routed and set, and the quote says which applies.
Door weight and size
Spring rating follows the door's weight, and a wide insulated door or a wood door takes heavier springs than a light single. Weight and height together set the parts on the quote.
What to have ready
- Do the springs run along the tracks beside the door, or is there one spring above the opening?
- Does the door drop the last bit, or drift up on its own?
- Is a car parked inside that will need to come out first?
Extension Spring Replacement: questions
QuestionsHow do you know which springs my door needs?
By weight. Extension springs are rated for the weight they lift, so the technician releases the opener and weighs the door on a scale, then matches that figure and the door's height to a spring rating and stretch length. The old springs are measured as a check on wire size, coil diameter and length. Where the two disagree, the scale decides, since doors gain weight from added insulation or panels.
Should I try to open the door by hand before the technician arrives?
No need, and it is easier on the door if you leave it. With a spring broken or slack, the door is unbalanced and heavy, and lifting it can let it drop or twist a section in the track. If the door is stuck partway, leave it there and keep people and the car away from the opening. The technician brings clamps and props, and the door is secured before it is moved at all.
How long do extension springs last?
Springs are rated in cycles, one cycle being a full open and close, and a standard set is built for a number in the ten-thousand range. A door used four times a day gets through that in several years; a door used a few times a week takes far longer. An unheated, damp garage shortens the figure through rust. Regular lubrication and a door kept in balance stretch it out.
Related services
- Garage Door Hinge ReplacementOn the old wood door, one hinge has pulled away from the panel, dragging a screw and a chunk of soft timber with it.
- Garage Door Track Repair or ReplacementAfter a decade of slushy winters the bottom foot of the track is flaking rust.
- Garage Door Cable ReplacementThe cable has wrapped itself around the shaft above the door instead of sitting on its drum.