A machine that throws a code or loses power stops your whole crew. We bring heavy industrial machinery diagnostics in Schaumburg to your job site, yard, or plant floor.
Robert Marecki tests the hydraulic, engine, and electrical systems where the machine sits. You get a clear answer on what failed and what the fix takes. Call or text Robert for same-day response on urgent breakdowns.
Slow cylinders, weak lift, and hot oil point to a hydraulic fault. We test pressure and flow on-site to find the failed pump, valve, or hose. You replace the right part the first time.
We diagnose Kubota, Yanmar, Perkins, and Deutz diesel engines inside loaders, forklifts, and telehandlers. Hard starts, black smoke, and power loss under load all have a cause. We trace it to fuel, air, or compression.
Chicagoland road salt eats wiring harnesses and connectors. We read fault codes, test sensors, and trace wiring to find the short or open circuit. Many electrical faults get fixed during the same visit.
A machine that creeps, whines, or won’t move under load often has a hydrostatic drive problem. We check charge pressure and drive motor output before anything gets pulled apart.
We diagnose Toyota, Hyster, Yale, and Komatsu forklifts right on your warehouse floor in Elk Grove Village, Addison, and nearby. Your other trucks keep working while we find the fault.
We diagnose Skytrak, JLG, Genie, and Lull telehandlers, plus ETI and Versa Lift bucket trucks. Boom and outrigger faults get tested where the machine is parked, even when it cannot be trailered.
1. You call or text Robert with the brand, model, symptoms, and location.
2. Robert drives to your site in Schaumburg or anywhere in Chicagoland.
3. He reads fault codes and goes over the machine’s recent history with you.
4. He tests hydraulic pressure, engine performance, and electrical circuits.
5. You get a plain answer: what failed, why it failed, and the repair plan.
6. Small faults get fixed on-site. Major overhauls go to our Schaumburg shop.
Trailering a dead machine to a shop costs half a day before anyone opens it up. In Schaumburg and across Chicagoland, we diagnose it where it sits. You know the problem, the parts, and the plan before the machine moves.
A diagnosis tells you if a part needs repair, a rebuild, or replacement. Robert explains the failure in plain words and tells you the repair cost before work starts. You decide based on facts, not guesses.
Cold winters thicken hydraulic oil and drain batteries. Road salt corrodes connectors and sensors. Summer heat pushes hydraulic temperatures up on long shifts in Joliet and Naperville. We test for the faults each season brings first.
Scheduled diagnostic checks spot worn pumps, weak batteries, and seeping seals early. After every repair, we test run the machine before it goes back to work. Your fleet in Cook and DuPage County sees fewer surprise breakdowns.
We work with warehouse managers along the O’Hare industrial corridor whose forklifts run multiple shifts. We work with maintenance teams in Elk Grove Village and Addison chasing a fault that keeps coming back. We work with contractors in Elgin and Arlington Heights whose one loader carries the whole job.
Machine showing a code, a leak, or lost power in Chicagoland? Call Robert before you call the dealer.





Yes, we diagnose heavy machinery at your job site, yard, or facility in Schaumburg and across Chicagoland. Robert brings the testing tools to you, so you skip the trailer and the tow bill.
Many faults are found during a single on-site visit. Intermittent electrical problems can take longer, because the fault has to show up during testing.
Yes, we read and interpret fault codes on the brands we service. A code points to a system, not always to the failed part. We test the circuit or component to confirm the cause before anything gets replaced.
Have the brand, model, symptoms, and exact location ready when you call. Note any warning lights, codes, or noises. This helps Robert bring the right tools and give you a fast ETA.
You get a plain explanation of the fault and the repair plan before any work starts. Small repairs are often done during the same visit. Major overhauls go to our Schaumburg shop.
Yes, we schedule diagnostic visits for fleets across Cook, DuPage, Will, and Lake counties. Regular checks catch worn parts before they cause a breakdown on a busy day.