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Linear Gate Motor Replacement: The Castaic Owner’s Guide
If you have a Linear gate motor that has quit or is struggling, we replace it with the correct Linear-compatible unit, typically within one visit. Most Linear gate motor replacements in Castaic run between $950 and $1,850 installed, depending on the model and whether the control board is replaced at the same time. The usual story we hear: the gate worked fine for ten or fifteen years, then one morning it hums, grinds, or does nothing at all. That is the motor telling you it’s done.
We stock Linear swing and slide gate motor replacements on the truck, along with the matching control boards, limit switches, and receivers. Victor Salinas has been replacing Linear operators in the Castaic area long enough to know which failures are the motor and which are a $40 limit switch or a bad capacitor. That distinction matters, because the difference is several hundred dollars. We don’t replace a motor unless the motor is actually the problem.
Which Linear Models This Applies To
Linear has made gate operators under several model families over the years, and most of them are still serviceable. The common ones we see on Castaic driveways: the residential swing-arm models like the LA400, LA405, and LRA series, the slide gate SL and LSL series, and the heavier APeX and M3S commercial operators on larger properties off Lake Hughes Road. The physical motor assembly varies by series. A swing motor is a direct-drive arm with a built-in actuator; a slide motor is a gear-reduction unit that bolts to the rail and drives the chain or belt.
Before ordering anything, look at the label on the side of the operator housing. It will show the model number and the part number of the original motor. If the label is sun-bleached and unreadable, we match by measuring the motor face, shaft size, and voltage. That is where most online ordering goes wrong. A Linear LA400 motor will not fit a Linear LA500, and no generic chinese replacement we have ever pulled out of a box matched the mounting pattern correctly. We use OEM Linear parts when they are available, and quality aftermarket equivalents with the same torque rating and duty cycle when they are not. Either way, the part is matched to the exact model on your gate.
Ironworks Gate Co. is an independent service provider. We are not affiliated with Linear or its parent company, and we are not bound by a dealer territory, which means we fix what is in front of us without an upsell to a newer system unless the old one is genuinely beyond repair.
Signs Your Linear Gate Motor Replacement Is Failing
- The motor hums but the gate does not move. This almost always points to a failed start capacitor or stripped gears inside the motor housing. On Linear units made before 2012, the capacitor is replaceable. On newer sealed motors, the whole motor gets swapped.
- The gate stops mid-travel and reverses. The motor’s limit switch or internal encoder is losing position. If it happens every third cycle or more, the motor is fighting itself and wearing the gearbox down fast.
- The gate moves noticeably slower than it did a year ago. Worn brushes, tired bearings, or low torque output. A Linear slide motor in Castaic heat loses lubricant faster than the manual suggests, and a dry gearbox is a dying gearbox.
- The motor trips its own breaker or blows a fuse on the board. This is the motor drawing more amperage than the board can supply, usually a sign of internal windings shorting. Do not keep resetting it. The next failure is usually the control board, and then you are replacing two things instead of one.
- You have to release the manual override just to get the gate to move at all. If the motor runs fine but cannot move the gate, the problem may be the motor, the drive chain, or the gate itself binding on its hinges. We check all three before condemning the motor.
Replacement Cost & What’s Included
Here is what we quote on Linear motor replacements in Castaic, parts and labor included:
| Job scope | Typical installed price |
|---|---|
| Linear LA400/LA405 swing motor replacement | $950 - $1,250 |
| Linear slide gate motor (SL/LSL) replacement | $1,150 - $1,550 |
| Linear motor plus control board replacement | $1,400 - $1,850 |
| Heavy-duty / commercial Linear operator replacement | $1,850 and up, quoted on site |
The range depends on whether we are reusing your existing control board, whether the motor mounts to the existing holes or needs new steel welded in, and whether the gate itself is binding and needs hinge or roller work so the new motor is not fighting the same fight as the old one. You get a written price before any work starts, and that price does not move. Every replacement is covered by our 90-Day Done Right Promise in writing. If it is not right, we come back. No paperwork, no arguments.
DIY or Call Us?
There are safe things to check first: confirm the breaker is on, confirm the manual release is fully disengaged after the last power outage, and look for an obvious obstruction in the track. Those are five-minute checks. What we do not recommend: opening the motor housing on a Linear unit that is still wired to the board, because a charged capacitor in there can hold enough voltage to hurt you, and if the gate is a slide gate under spring tension, releasing the wrong bolt can throw the chain. The mechanical side is not forgiving.
If the gate weighs more than you do and it moves on its own, let a trained person trade the parts. We do this swap in one visit, most often in under two hours, and we take the old motor with us. Call (350) 248-1180 and we will give you an honest read on whether that Linear unit is worth saving or ready for the honest retirement it has earned.
FAQs
A well-maintained Linear residential gate motor typically lasts 10 to 15 years in the Castaic climate. The heat and dust shorten that if the gearbox is never greased and the driveway drains toward the operator. We see plenty of 20-year-old Linear units still running, and we see 6-year-old ones cooked by a bad seal and a couple of Santa Ana seasons. Maintenance buys years.
Sometimes yes. A bad capacitor, a worn limit switch, or a corroded wire connection can mimic a dead motor, and those are repair jobs under $200. If the motor windings or the gearbox are gone, replacement is the honest call. We will tell you which one you have before we sell you anything.
Most residential Linear motor swaps take between one and two hours on site. If we need to fabricate a new mounting plate or repair the gate’s own hinge or roller hardware, it can run longer, but we quote the time and the price up front.
We stock the most common Linear swing and slide motor replacements, plus matching boards and receivers, on the truck. When a part is not on the truck, we can usually have it in hand within two business days. Call (350) 248-1180 and we will tell you what is in stock for your exact model.
Written by Victor Salinas, Owner & Gate Repair Technician, Ironworks Gate Co. at Ironworks Gate Co., serving Castaic and nearby areas.
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