DFW & Surrounding Areas
Specialist repair
All-O-Matic operators are workhorses — simple, heavily built, and very repairable. They also turn up on a lot of older Dallas properties where the original installer is long gone. We service them, stock the common parts, and have the repair photos and video to show for it.
Choose your model for the faults we see on it, the parts we repair or replace, and whether it is worth repairing. The model number is usually on a label inside the control box.
We also service
Not listed? Call us anyway. This covers the units we see most often in Dallas–Fort Worth, not everything we can work on.
All-O-Matic units are mechanically straightforward, which means the failure is almost never the whole operator. It is a limit switch, a clutch adjustment, a chain, or a control board. Anyone quoting you a full replacement on an All-O-Matic has not opened it.
Every photo below is a Shield technician on an actual job. No stock imagery.
Knowing how a manufacturer’s equipment actually behaves is the difference between a targeted repair and a replacement quote.
All-O-Matic operators are mechanically straightforward and heavily built. There is comparatively little to go wrong, and what does go wrong is nearly always a discrete, replaceable component rather than a systemic failure.
The practical implication is direct: anyone quoting a full replacement on an All-O-Matic has almost certainly not opened it. Limit cams, clutches, chains and boards account for the overwhelming majority of faults on these units.
The SL-150 slide operator has a clutch inside its gearbox that slips when the gate meets resistance, and the SW-300 and SW-350 swing operators use a torque limiter or internal clutch; the SL-100 instead relies on the board’s electronic reversing device. When a gate stalls or reverses part-way, people reasonably conclude one of those has failed — but usually it is doing precisely its job, and the real fault is that the gate has become hard to move.
All-O-Matic describes the clutch as protection for the operator, with obstruction safety coming from the reversing device and photo-eyes. Tightening a clutch or turning reversing sensitivity down to force a binding gate through hides the real fault, so we check the gate by hand before adjusting either, every time.
On the slide operators, limit positions are set by limit nuts held by a lock plate; on the older swing operators, by cams tightened with an Allen screw. Either can creep over thousands of cycles, and the gate gradually stops travelling as far as it should. It is an adjustment rather than a repair in most cases, and it explains a great many "the gate has stopped closing properly" calls.
Chain stretch is normal and progressive. A stretched chain rides higher on the sprocket, wears the teeth, and eventually jumps. Replacing a chain is inexpensive; replacing a chain, sprocket and gearbox because the chain was left running is not.
“We’d have to order that” discovered on the day is how a same-visit repair becomes two visits. Here is what we actually carry.
Case studies
The fault, how it was diagnosed, and what it actually took to fix.
Customer testimonials
Real Shield Gate Repair customers describing the job in their own words, All-O-Matic jobs first.
Yes. All-O-Matic is still in production and the common wear parts — limit switches, clutches, chains, boards — are readily available. This is one of the more economical operators to keep running.
Usually the gate, not the operator. On an SL-150 the gearbox clutch slips when the gate meets resistance; on an SL-100 the board’s electronic reversing device stops and reverses it. Either way, a gate binding on its track or hinges produces exactly this symptom, so we check the gate by hand before touching the operator — and only then look at the clutch, reversing sensitivity or limits.
These units routinely run twenty years or more with basic servicing. Age alone is not a reason to replace one. We look at gearbox condition and parts availability, not the date on the label.
Usually the operator doing its job. On an SL-150 the clutch slips when the gate meets resistance; on an SL-100 the electronic reversing device stops and reverses it. If the gate is binding on its track or its hinges, either will stop it. We check the gate by hand before adjusting anything, because forcing a binding gate through hides the real fault.
These routinely run twenty years or more with basic servicing. Age alone is not a reason to replace one. We look at gearbox condition and parts availability rather than the date on the label.
We answer the phone 24/7. If you are stuck, call and we will talk you through the manual release before anyone arrives. See what counts as a gate emergency.
