1985 Autocar — we work on any truck
If it runs diesel and needs help, we'll show up. Age is not a barrier — classic, vintage, or modern.
On-Site Equipment & Generator Service
Construction Equipment & Generator Diesel Repair — On the Jobsite.
Off-road diesel equipment and generators are too heavy and too busy to trailer to a shop every time they act up. We come to the jobsite for excavators, loaders, skid steers, gensets, and light towers, test the actual cause on-site, and give you a clear repair direction that keeps the machine working.
- Excavators, loaders, skid steers, gensets, and light towers serviced on-site
- No-start, electrical, fuel, hydraulic-related, and aftertreatment faults diagnosed
- Jobsites across Charleston, North Charleston, Summerville, and Goose Creek
What We Service On-Site
Off-road diesel equipment and generators we handle
Excavators & loaders
Excavators, wheel and track loaders, backhoes, and telehandlers diagnosed for no-start, power loss, fault codes, and electrical or fuel problems where they sit.
Skid steers & compact machines
Skid steers, compact track loaders, and compaction equipment — the small machines a crew can't afford to have parked mid-job.
Generators & gensets
Standby and portable diesel generators that won't start, shut down, or won't hold load, diagnosed on-site so the power comes back fast.
Light towers & support units
Light towers, welders, pumps, and other diesel-powered support equipment kept running through no-start, charging, and fuel faults.
Why Bring Us to the Site
Keep the machine on the job, not on a trailer
Trailering an excavator or a genset to a shop means renting transport, losing the machine for days, and paying for downtime on a jobsite that can't wait. Most equipment faults — no-start, electrical, fuel, sensor, and aftertreatment problems — can be diagnosed and often repaired right where the machine is parked.
We bring the diagnostic equipment to the site, read the codes and live data, and work the fault systematically. You get a clear answer — what failed, what was tested, and whether it can be fixed on-site — so the crew gets the machine back instead of waiting on a hauler and a shop queue.
Why operators call us
- Mobile service where the equipment is sitting
- Testing before parts replacement
- Clear written findings and next steps
- Commercial diesel and fleet-focused support
- 24/7 Charleston-area availability
What We Handle On-Site
Equipment and generator work we do at the jobsite
1. No-start & hard-start
Crank/no-start, hard start, and stalling on machines and gensets traced to the real cause — fuel, air, charging, or electrical — before parts go on.
2. Electrical & charging
Batteries, alternators, starters, grounds, wiring, and control-panel faults tested where the equipment is parked.
3. Fuel systems
Air in the fuel, filters, priming, rail pressure, and injector concerns worked through on-site to get the engine running clean.
4. Aftertreatment & derate
DPF, DEF, and SCR faults, regen problems, and derates on newer equipment diagnosed to get the machine out of reduced power.
5. Generator & load faults
Gensets that won't start, shut down under load, or won't hold voltage checked so standby and site power come back online.
6. Fault-code diagnostics
Active and stored codes, live data, and targeted testing to confirm what actually failed instead of swapping parts and hoping.
Equipment or a generator down on a Charleston-area jobsite?
Call or text Lowcountry Diagnostics and we will come to the site.
Equipment & generator service questions
Do you service equipment on the jobsite?
Yes. We are mobile and come to the jobsite, yard, or lay-down area where the equipment is sitting anywhere in the Charleston area. Off-road machines and generators are hard to move, so on-site diagnosis and repair keeps them working instead of loaded onto a trailer for a shop.
What kind of equipment and generators do you work on?
Diesel-powered excavators, wheel and track loaders, skid steers, backhoes, telehandlers, compaction equipment, standby and portable generators, and light towers. We work on most diesel-powered off-road and equipment engines and their electrical, fuel, and aftertreatment systems.
My generator won't start or keeps shutting down. Can you help?
Yes. Gensets down on standby or on a jobsite are a priority — we diagnose no-start, shutdown, fuel, charging, and control faults on-site. We test the actual cause so the unit is back online instead of guessing at parts while the power is off.
Do you handle aftertreatment and derate faults on off-road equipment?
Yes. Newer construction equipment runs DPF, DEF, and SCR systems just like on-highway trucks, and they derate the same way. We read the fault codes, diagnose regen, DEF, and sensor problems, and work to get the machine out of a derate on the jobsite.
Request On-Site Equipment or Generator Service
Tell us where the machine is and what it is doing. For a stopped machine or a genset that's down, calling or texting is fastest.
Machine or generator down and holding up the job? Call or text (843) 310-0995 now.
Recent Repair Photos
A look at the repairs we make
Real field photos from Lowcountry Diagnostics — from engine diagnostics and electrical to hydraulic, HVAC, and heavy-duty truck service, handled on-site across the Charleston area.
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