Free on-site gate assessment - hinges, posts, and your LiftMaster or Nice gate operator checked before anything is quoted
The assessment is free and the quote is the invoice.





DoorKing Welding & Fabrication: The North Hollywood Owner’s Guide
We stock and fabricate DoorKing-compatible gate parts right here in North Hollywood, with most bracket, hinge, and frame repairs completed in one visit. Typical installed pricing runs $180 to $420 depending on the part and how much fabrication the job needs, and every price is quoted and agreed before any work starts. Most owners discover a failed weld or fractured bracket the hard way: the gate starts dragging, the opener strains, and one morning the gate simply won’t move. We keep common DoorKing weldments on the truck, and for anything we don’t have, our shop is minutes from the 101 and 170, not a week away.
Which DoorKing Models This Applies To
DoorKing swing and slide operators share a design language, and most of the welding and fabrication work we do falls into a handful of part families. The 6000 and 6100 series swing operators use a cast aluminum crank arm and a steel mounting plate that take the full force of every open and close cycle. The 9000 series slide operators rely on a steel drive rail, idler brackets, and gate roller trucks that wear differently depending on the gate weight. The 1600 and 1800 series barrier gates use a different geometry again: the boom pivot and counterweight brackets are the usual failure points there.
Identifying your part is easier than most owners expect. The mounting plate has a DoorKing part number stamped on the back edge; the crank arm has it cast into the inside face. If the label is gone or painted over, measure the bolt spacing on the plate. DoorKing has used the same 4-hole pattern on most swing arms since the early 2000s, but there are two different plate thicknesses depending on gate weight: 1/4-inch for gates under 600 pounds, 3/8-inch above that. We keep both in stock because putting a light-duty plate on a heavy gate is how welds crack in the first place.
Ironworks Gate Co. is an independent service provider and not affiliated with DoorKing. We have installed and repaired their equipment for decades, and we stock quality aftermarket weldments machined to original specs alongside genuine DoorKing parts when a customer prefers them. For brackets and mounting plates, a properly made aftermarket part from 3/8-inch steel plate is functionally identical to OEM and usually costs 20 to 30 percent less. For cast components like a crank arm, we recommend genuine DoorKing: the cast tolerances matter.
Signs Your DoorKing Welding & Fabrication Is Failing
- The gate hesitates or jerks at the start of travel. A cracked weld on the mounting plate lets the operator push against flex instead of the gate. The motor overworks, the gate stutters, and the crack grows every cycle.
- You can see a visible gap or rust stain at a weld joint. Rust bleeding from a weld line means water got into a hairline crack. In North Hollywood’s dry summers that crack might sit for a season, but the winter rains move it along fast.
- The gate sags or scrapes the ground on the latch side. Broken hinge welds or a fractured gate frame corner change the gate’s geometry. The opener keeps pushing a heavier, misbalanced gate, which wears everything downstream.
- The operator runs but the gate barely moves. This is often a stripped or cracked crank arm keyway. The motor turns, the arm slips, and the gate stays put. Continuing to run it chews the keyway into a smooth bore.
- You hear a pop or clunk when the gate starts or stops. That sound is slack being taken up by a part that has developed play. It could be a wallowed bolt hole in a bracket, a cracked weld flexing, or a hinge pin that ovaled its housing.
Replacement Cost & What’s Included
Here is what we quote in North Hollywood for common DoorKing welding and fabrication work, installed:
- Mounting plate replacement (swing operator): $180-$280 including fabrication, hardware, and installation.
- Crank arm replacement (swing operator): $220-$340 including a genuine DoorKing arm, key, and new fasteners.
- Hinge weld repair (gate post or frame): $190-$320 per hinge, depending on access and how much of the post needs rebuilding.
- Slide gate roller bracket repair or replacement: $200-$390, depending on roller size and whether the rail needs re-aligning.
- Gate frame crack repair (corner or mid-rail): $160-$300 per crack, including grinding, welding, and reinforcement plating.
The spread comes down to three things: how thick the existing steel is, whether the gate needs to come off its hinges to do the work right, and whether the damage is at ground level with room to work or up against a wall. We itemize parts and labor on every quote, and the price we agree to is the price on the invoice. Every weld and bracket we install is covered by our 90-Day Done Right Promise in writing: if it is not right, we come back and make it right, no paperwork and no arguing. Victor Salinas has been welding in the Valley since studying at Los Angeles Trade-Technical College, and he does not put a part on a gate he would not put on his own shop door.
DIY or Call Us?
Here is the honest split. If you want to identify the part, take photos of the label and measure the bolt spacing: that saves us a return trip and gets your quote faster. Checking a gate for visible weld cracks, rust at the joints, and sag is safe and useful. What we would not recommend doing yourself is removing or welding a structural gate part. A swing gate under torque stores enough energy that a cracked bracket letting go can throw the gate or the operator arm hard. Welding a hinge without supporting the gate properly is how people get pinned. If the existing weld is load-bearing, call us at (925) 693-7978 and we will assess it, quote it, and usually repair it the same visit.
FAQs
On a properly installed gate, mounting plates and hinge welds commonly last 8 to 15 years in North Hollywood. Gates that are heavier than the operator rating, or hinges that were never greased, can cut that to 5 years or less. Coastal-adjacent Valley air is not the rust problem for gates that the beach communities deal with, but southern exposure means constant thermal cycling, and that is what eventually opens up welds.
Sometimes, and we will tell you straight. A hairline crack in mild steel plate can be ground out, welded, and reinforced with a fish plate, and that repair can outlast the rest of the bracket. If the bracket is twisted, if the bolt holes are wallowed, or if it has already been welded once before, replacement is almost always the better call. We do not recommend welding a second time onto fatigued, heat-cycled steel: that is throwing good money at a part that is done.
Most mounting plate and crank arm replacements are done in 60 to 90 minutes with the gate in place. Hinge weld repairs take two to three hours because the gate comes off, the weld gets ground clean, and everything needs to cool and be re-aligned before we call it done. We bring the parts and the welder on the first visit, so there is no second trip for anything we stock.
Yes. We stock mounting plates in both thicknesses, crank arms for the 6000 and 6100 series, hinge weldments, and hardware kits on the truck. Roller brackets and rail components for the 9000 slide series are at our shop in North Hollywood, usually available same day. For niche parts we do not carry, we can typically fabricate a replacement in 24 to 48 hours from steel that matches or exceeds the original spec. Call (925) 693-7978 and we will tell you what we have before we send a truck.
A gate should open when you need it to and stay closed when you don’t. Everything else is just the work. If your DoorKing gate is fighting you, call Ironworks Gate Co. at (925) 693-7978 for a free estimate. We have been serving North Hollywood and the surrounding Valley for over 42 years, and we also stock parts for LiftMaster, Mighty Mule, and Ghost Controls systems when the repair calls for it. A live person answers, any hour, and the price we quote is the price you pay.
Written by Victor Salinas, Owner, Ironworks Gate Co. at Ironworks Gate Co., serving North Hollywood and nearby areas.
Before
After
Before
After
Before
After