Russell Schwartz.
Thirty years,
one set of hands.
RES Heavy is one master diesel technician with more than 30 years on trucks, diesel engines and heavy equipment — not a call center with a dispatch board.
When you call, Russ answers. When the truck shows up, Russ is driving it. Nobody gets handed off, nobody gets a technician who's never heard of your equipment, and nobody gets told "the guy who knows that isn't in today."
Credentials, and what they buy you
Most shops list certifications and leave it there. Here's what each one actually means when your truck is down.
Factory trained: Caterpillar
Trained on Cat engines and equipment through the manufacturer's own program — not a general trade-school overview. On a job site that's the difference between reading a fault code and knowing what it means on that machine.
Factory trained: Cummins
Diagnostics the way Cummins teaches them, on the engines that are under most of the trucks on the 5.
Factory trained: Isuzu
Medium-duty box trucks and cabovers — the backbone of most local delivery and service fleets.
EPA Section 608 Universal
Certified to service any refrigerant system. Reefer units and cab A/C, legally and properly.
EPA Section 609
Motor vehicle air conditioning specifically.
Commercial Driver License
He can legally move your truck. Most mobile mechanics can't — which matters more often than you'd think.
What that time was actually spent on
"Experienced" is what everybody says. Here's the specific version.
Deep experience across Detroit Diesel, including the classic two-strokes — the 71 and 92 series that most shops won't touch anymore because nobody there has run one. Eaton Fuller transmissions and Meritor axles and brakes. J1939 CAN communications and electrical diagnostics, which is where the hard, expensive, nobody-can-find-it problems live. Hydraulics on construction and utility equipment.
Russ has owned and operated mobile repair businesses for decades, supporting Penske, South Coast Water District, commercial fleets, construction and utility equipment, and CHP compliance repairs. That last one is why the San Onofre red-tag work and the BIT inspection side aren't a stretch — knowing what an inspector measures, and what he needs to see before he'll release you, came from doing it for years.
- Master diesel technician, 30+ years
- Factory trained: Caterpillar · Cummins · Isuzu
- Detroit Diesel, including 71 & 92 series two-strokes
- Eaton Fuller transmissions · Meritor axles
- J1939 CAN & electrical diagnostics
- Hydraulics, construction & utility equipment
- DOT & CHP BIT compliance work
- Family owned & operated, San Clemente CA
Diagnose first. Then quote. Then fix.
Parts-cannon repair — replacing things until the symptom goes away — is how a $400 problem turns into a $2,000 invoice. Thirty years is mostly worth paying for because it shortens the diagnosis.
You get told what it costs before the work starts, not after. If it's something that genuinely can't be done at the roadside — major internal engine work, frame damage — you get told that on the phone, before anybody drives out and charges you to find out. Being straight about the limits is cheaper for both of us.
And it's one truck, fully equipped, showing up with the tools and the common parts already on board. Most jobs get finished on the first visit.
Call the mechanic, not a dispatcher
Orange County based, will travel for the right job. Call or text any hour.