Linear Gate Motor Replacement Nationwide

Linear Gate Motor Replacement: The Concord Owner’s Guide

A Linear gate motor replacement in Concord typically runs $680-$1,450 installed, depending on whether we’re matching a single swing-arm operator like the ACT-31 or a heavier-duty slide-gate unit from the HSLG series. We stock common Linear motors and mounting hardware on our trucks, and most replacements in Concord are completed same-day once we’ve measured your gate and confirmed the model. Most owners realize the motor has failed when the gate starts moving half its normal speed, stops mid-travel, or clicks repeatedly without turning the arm - signs that the internal gearbox or capacitor has given out after years of opening against Concord’s afternoon heat and the extra load from gates that haven’t been greased since installation.

Call (510) 726-7050

Which Linear Models This Applies To

Linear gate motors fall into three families you’re likely to find around Concord: the ACT series (ACT-31, ACT-21, ACT-61) for residential swing gates up to roughly 16 feet and 850 pounds; the HSLG and HSLG-S slide-gate operators for chain-driven commercial or estate gates; and the older GTO/PRO line that Linear absorbed years ago and still supports with limited parts. The model number lives on a silver data plate riveted to the motor housing, usually facing the gate post. If that plate is sun-faded to illegibility, we measure the gate weight, leaf length, and cycle count to back-calculate the correct replacement rather than guess.

We are an independent service provider - not affiliated with Linear - so we source both OEM Linear motors and quality aftermarket equivalents from US Automatic and Elite when the job calls for it. The aftermarket units often carry longer warranties and use standard mounting patterns, but for ACT-series gates with proprietary Linear limit-switch wiring, an OEM drop-in saves an hour of harness adaptation. We’ll show you both options in writing before you decide.

Signs Your Linear Gate Motor Replacement Is Failing

• Gate opens halfway, then reverses or stalls. The internal limit switches are drifting out of calibration, or the motor is drawing excessive amperage as its windings degrade. In Concord’s inland heat, we’ve seen ACT-31 motors run 15-20 degrees above ambient, accelerating insulation breakdown in the coil.
• Loud grinding or whining from the motor housing. The worm-gear set inside the gearbox has lost its grease pack or the bronze gear wheel is wearing into the steel worm. Once metal starts shedding into the housing, the motor needs replacement - flushing and regreasing rarely saves it.
• Remote clicks the receiver, but the motor never engages. The control board is sending voltage, but the start capacitor has failed or the motor’s thermal overload has tripped. We test with a clamp meter at the motor leads to confirm whether the problem is electrical supply or mechanical seizure.
• Gate moves slower in warm afternoon hours. The motor is compensating for weak windings by drawing more current, which triggers internal thermal protection. Concord’s 90-degree summer days push marginal motors over the edge; a motor that limps through March usually quits by July.
• Visible oil or grease leaking from the motor base. The output-shaft seal has failed, letting the gearbox lubricant escape onto your driveway. Without lubrication, the gear set destroys itself in roughly 200 cycles - often less than two weeks of normal use.

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Replacement Cost & What’s Included

What drives the range: gate weight and leaf length determine motor size; whether the existing arm bracket and mounting posts are still square after years of vibration; and whether we need to extend or replace the low-voltage wiring run from the control box. Every replacement includes new mounting hardware, limit-switch setup with a tape-measure verification of open and close positions, and a photo log of the installation - under Clause 4 of The Haven Standard, you get the pictures and the written scope before we leave. The 365-Day Done Right Promise covers the full installation at no additional charge if anything shifts or fails.

DIY or Call Us?

There’s a short list of safe checks: verify the breaker hasn’t tripped, confirm the photo-eyes are clean and aligned, and test whether the gate moves freely by hand with the motor disengaged (most Linear arms have a manual release key or lever). Beyond that, gate motors combine 120-volt household power with high-torque mechanical output - a 16-foot swing gate can deliver enough force to cause serious injury if the motor engages while you’re working on the bracket.

We’ve also seen DIY replacements fail because the limit switches were set by eye instead of measured to the inch, or because the motor was bolted to a rotted post that shifted within a month. We measure, we document, we write the price before we start. If you want a second opinion on another company’s estimate, bring the paperwork - we’ll review it at no cost. Call (510) 726-7050 when you’re ready to schedule.

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