Linear Gate Motor Replacement Nationwide

Linear Gate Motor Replacement: The Los Angeles Owner’s Guide

If your Linear gate operator is dead or dying, we stock Linear-compatible replacement motors and install them across Los Angeles, typically for $650 to $1,400 parts and labor depending on your model and what else got damaged when the motor failed. Most replacements are done the same day we diagnose the problem, and the customer sees the price in writing before we turn a single wrench. The usual discovery is a gate that hums without moving, a motor that runs but barely pushes the gate, or a controller that clicks while the arm stays frozen. Sometimes a gate works fine for years and then one afternoon it just refuses to open, and that’s almost always the motor or the capacitor that starts it.

Call (213) 322-0062

Which Linear Models This Applies To

Linear made gate operators for decades under a few lines that are still common in Los Angeles driveways: the LDO series (LDO50, LDO33), the SL series slide gate operators (SLR, SLD), the commercial LS series, and the ever-present APeX and PRO series swing-arm operators that run on 12-volt DC motors. The replacement motor for a swing gate is not the same part as a slide gate motor, and that’s where owners get crossways with online parts orders. The motor you need depends on whether the operator is AC or DC, the horsepower rating, and whether the motor shaft is keyed or splined. A Linear APeX 1800 swing gate motor will not fit a Linear LDO50 slot, even though both are Linear parts.

On the OEM-versus-aftermarket question, we’ve had good results with quality aftermarket DC motors matching the factory winding and shaft spec, and they cost 20 – 30% less than the Linear-branded part. But we’re honest about it: certain Linear models, especially older AC units with thermal overload switches, run cooler and longer with the factory part. We carry both and we’ll quote both. The compatibility gotcha we see most often in Los Angeles is heat-related: a 1/2 HP motor that lasted ten years in a mild coastal climate burns out in five or six years in Van Nuys or Canoga Park summer conditions, and the replacement needs to be matched to the load the gate actually carries, not just the operator’s original spec. A heavier wooden gate or a gate with wind screens changes that equation fast.

One more thing worth knowing: Linear’s model plate is usually on the underside of the operator cover, but in sun-hit Los Angeles installations those decals fade to blank white after a few seasons. If yours is unreadable, measure the motor body length and shaft diameter and check the controller board label before buying anything. We do that on site, because a misordered motor is a second trip and a longer driveway shutdown.

Signs Your Linear Gate Motor Replacement Is Failing

• Hum but no movement. The motor’s getting power but the start capacitor is weak or the armature has seized. If you hear the hum and the gate doesn’t budge, shut the operator off and call us, because a stalled motor pulling current can damage the control board in minutes.
• Gate moves slow or needs a push to start. Worn motor brushes on DC models or a failing capacitor on AC models. The motor is still alive but running at half power, and it’s working the gearbox and the chain harder than they’re rated for. That’s how a $300 motor replacement turns into a $900 gearbox-and-motor job.
• Motor runs but gate stops mid-travel. The motor’s thermal overload is tripping because it’s overheating under load. In Los Angeles, this shows up in July and August when the asphalt’s already 130 degrees and the motor’s been cycling all day. When a motor starts thermal-tripping, it’s telling you the windings are degrading.
• Burnt electrical smell near the operator. Insulation on the motor windings is breaking down. Do not keep running it. That smell means heat damage already happened, and the next stop is usually a short that takes out the controller board too.
• Gate responds inconsistently or only from one remote. Sometimes it’s the motor-start draw pulling voltage down enough to reset the receiver. The motor’s drawing more current than it should, and the board sees a brownout. If the remote tests fine, the motor’s the likely draw.

Replacement Cost & What’s Included

In Los Angeles, a Linear gate motor replacement with installation typically lands between $650 and $1,400. The spread comes down to the operator type, the motor spec, and whether we need to also replace a damaged start capacitor, a worn drive belt or chain, or a controller board that got taken out when the motor failed. Here’s how it usually breaks down:

• Swing gate DC motor replacement (APeX/PRO series): $650 – $950 installed
• Swing gate AC motor replacement (LDO series): $550 – $850 installed
• Slide gate motor replacement (SL/LS series): $800 – $1,400 installed
• Starter capacitor (if needed): $40 – $120 installed
• Labor (diagnosis, removal, installation, testing, limit switch set): $180 – $350 depending on access and complexity

Every quote is written and given to you before any work begins, and that number is the number you pay. The Kingswell Guarantee covers the replacement motor and labor for 365 days, in writing, on the invoice. If it fails inside that year, we come back at no charge. No charge for the return visit, no charge for the replacement part, no charge for labor. That’s not a handshake, it’s stamped on the paperwork.

We don’t charge extra for working in gated communities, steep driveways, or hillside lots in Los Angeles. Access matters in our scheduling but not in our price.

DIY or Call Us?

What’s safe to check yourself: the breaker, the operator’s power switch, obstructions on the track, and whether the gate moves freely by hand in the open position (swing gates) or along the rail (slide gates). If the gate binds or grinds when you move it manually, the motor may be fine and the issue is mechanical. But once you’re sure the motor itself is dead, call us. Swapping a Linear gate motor means working with 120VAC or 24VDC wiring, high-tension springs on some swing operators, and a gate that can weigh 300 to 800 pounds. A gate moving under a partially reinstalled motor can break a hand or pin someone against a post. That’s not a scare line, it’s the reality of the trade. If you’ve already got the part, we’ll install it, it just won’t carry the full year guarantee since we didn’t source it. Call us at (213) 322-0062 and we’ll give you a straight number before we come out.

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