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Linear Gate Motor Replacement: The Irvine Owner’s Guide
A Linear gate motor replacement in Irvine typically runs between $1,100 and $2,600 installed, parts included, and we stock Linear-compatible motors and controller boards on the truck for same-day swaps in most cases. You usually find out the motor is dead the way most people do: the gate hums and won’t move, or it trips the breaker when the open command hits, or it just sits silent while the remote flashes. We diagnose the exact failure before quoting, because sometimes it’s the motor, and sometimes it’s a $40 capacitor on the control board that’s been baked by the Irvine sun.
Which Linear Models This Applies To
Linear made two workhorse residential swing-gate operator lines we see constantly in Irvine: the older LDO series (LDO50, LDO100) and the newer APeX series (APeX-3, APeX-5). If your gate arm is a long silver cylinder mounted on a pedestal, you’re likely looking at an LDO. If the housing is more compact and the brand plate says APeX, you have the newer design with the integrated controller. The model number is on a silver sticker on the side of the motor housing, but sun exposure in Irvine tends to bleach that label after about five years, so we often identify the motor by its arm length and bolt spacing instead.
A critical compatibility gotcha with Linear: the LDO and APeX lines use different mounting brackets and different control board pinouts. A motor from one series will not drop into the other without a bracket swap and rewiring. We see this mistake on gates where a well-meaning handyman bought a “Linear replacement motor” online and then spent a weekend discovering the bolt holes don’t line up. The second gotcha: Linear’s 24VDC motors burn out faster when the gate is out of balance, so if you replace the motor without checking the hinge load on the gate leaf, you’ll be buying another motor in two years. We check the load every time.
For OEM versus aftermarket: Linear still distributes OEM motors and boards through authorized channels, and for APeX units under five years old, we use OEM parts because the controller firmware is designed around the original motor’s current draw. For LDO units that are 10-plus years old, a quality aftermarket motor built to the LDO spec is usually the right call: the OEM part costs about 40% more, and the aftermarket equivalent carries the same one-year warranty. We’ll show you both prices in writing and you choose. Vance Gate Repair is an independent service provider, not affiliated with Linear or the Nortek family of brands, and we also stock parts for LiftMaster, Mighty Mule, and Ghost Controls operators.
Signs Your Linear Gate Motor Replacement Is Failing

- The gate hums for a second and stops. This is usually the motor’s start capacitor failing or the armature seizing from worn brushes. In a Linear LDO, the capacitor is inside the motor housing and it’s the single most common point of failure after about seven years of daily cycles in Irvine’s climate.
- The gate moves slower than it did last year. A healthy Linear motor opens a 14-foot gate leaf in 12 to 15 seconds. When the motor’s windings start degrading or the gearbox fluid has cooked off, that time stretches to 20-plus seconds. Slow operation is the motor telling you it’s done.
- The breaker trips when the gate tries to open. This points to a short in the motor windings or a seized gearbox forcing locked-rotor current. A Linear APeX motor draws about 3.5 amps under normal load. A failing one will spike past 10 amps and trip a standard 15-amp circuit.
- The gate runs fine one day and won’t move the next. Classic intermittent motor failure: the thermal overload switch inside the motor trips after heavy use, resets overnight, and works until it gets hot again. In Irvine summers, we see this pattern constantly because gate motors in direct sun run 40 to 60 degrees hotter than the spec sheet assumes.
- The gate jerks or stutters mid-travel. This is the gearbox stripping or the motor’s brushes arcing. Either way it’s mechanical wear inside the motor assembly, and once it starts jerking it will only get worse. Replacing the motor before the gearbox takes out the control board saves about $400.
Before
AfterReplacement Cost & What’s Included
A Linear gate motor replacement in Irvine typically ranges from $1,100 to $2,600 installed. The lower end covers an LDO-class motor with an aftermarket equivalent part on a single-leaf gate that’s already in good balance. The upper end covers an OEM APeX motor with a new control board, a hinged-arm swap, and gate leaf rebalancing. Three things drive the price: whether the motor is OEM or aftermarket, whether the control board survived the motor failure (a shorted motor often takes the board with it), and whether the gate leaf itself needs hinge or alignment work before a new motor will be safe to run.
Every quote is itemized and handed to you in writing before any work starts: motor part number and price, labor, any board or bracket replacement, and tax. That’s Haven Standard Clause 1: have it in writing. There is no surprise invoice at the end. The replacement work carries our 365-Day Done Right Promise: if the new motor isn’t right within a full year, we make it right at no charge, no argument.
Before we leave, you get a photo log of the old motor that came out, the new motor that went in, the limit-switch settings on the new unit, and the part number on the installed motor’s label. Clause 4: evidence on every job.
DIY or Call Us?

You can safely check a few things yourself: confirm the breaker isn’t tripped, look for obvious physical damage to the motor housing, and note whether the gate moves freely by hand when the operator is disengaged using the manual release. That last check is genuinely useful information for us: if the gate is hard to push by hand, the motor was working against a mechanical problem, and no new motor will survive that for long. Turn the power off at the breaker before touching anything near the operator. The motor’s internal capacitor holds a charge even when the unit is off, and the gate leaf itself is heavy enough to break fingers if it swings while you’re working near the hinge side. If the gate is not moving freely by hand or you see scorch marks or melted wire insulation anywhere on the motor or board, stop and call (657) 258-2588.
FAQs
A Linear gate motor on a well-balanced gate in Irvine lasts 8 to 12 years, but coastal humidity paired with inland summer heat in our area shortens that to 5 to 7 years when the gate is even slightly out of balance or the motor sits in direct afternoon sun. A motor that hums, slows down, or trips breakers at any age is telling you it’s failing regardless of the calendar. We’ll test the motor’s current draw and tell you exactly where it stands, then put the replacement price in writing before you decide.
Yes, in specific cases: a failed start capacitor, worn brushes, or a burnt limit switch can be replaced for $120 to $350 in parts and labor, and we stock those components for Linear LDO and APeX motors. If the windings have shorted or the gearbox has stripped, repair isn’t cost-effective: you’d spend 70% of a new motor’s price to get a part with no warranty and unknown remaining life. We show you the failed component in the photo log either way.
Most Linear gate motor replacements take two to three hours on site: remove the old motor, install the new one, set limit switches, wire the controller, and run a full open-close cycle test under load. If the control board also needs replacing or the gate leaf requires hinge work, plan for four to five hours. We’ll give you a time estimate in writing alongside the price before work begins.
We stock Linear-compatible motors, start capacitors, limit switches, and controller boards on the service truck for both LDO and APeX lines, which means most Irvine replacements happen the same day we diagnose the failure. If your gate uses a less common Linear model where the exact OEM part isn’t on the truck, we order it with expedited shipping and give you the arrival window before we leave the first visit. Call (657) 258-2588 with your model number and we’ll tell you right then what’s in stock.
Written by Adrian Vance, Owner, Vance Gate Repair Irvine at Vance Gate Repair Irvine, serving Irvine and nearby areas.
Need a Linear gate motor replacement in Irvine? Call (657) 258-2588 for a written, itemized estimate and same-day service. A live person answers, and the price you see is the price you pay. Name what you found, name what it costs, name what you left behind.





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