Mobile Diesel Repair Across Middle Tennessee
On-site diesel repair for heavy-duty trucks, commercial fleets, construction equipment and diesel-powered machinery — brought directly to your location by a veteran-owned team.
Diesel repair without the tow bill.
When your equipment breaks down, every minute of downtime costs money. Patriot HD provides mobile diesel repair throughout Middle Tennessee — professional diagnostics, maintenance and repairs at your location, without the cost or delay of hauling equipment to a shop.
Our field technicians are equipped to service diesel engines, fuel systems, cooling systems, electrical systems, charging systems, hydraulic circuits and emissions components directly on-site. From single-truck owner-operators to large commercial fleets, we bring the expertise to get you back to work.
We service Cummins, PACCAR MX, Detroit Diesel, CAT, Duramax, Power Stroke, Volvo, Isuzu, Kubota, John Deere and virtually every diesel engine platform on the road or on a jobsite today.
Whether it's a stubborn no-start, a fuel system fault, an overheating condition or a hard-to-trace performance issue, Austin and the Patriot HD team bring the diagnostic tools and experience needed to solve it in the field.
Every make. Every model.
- Heavy-Duty Trucks
- Commercial Fleets
- Excavators
- Skid Steers
- Wheel Loaders
- Dozers
- Generators
- Ag Equipment
A complete field service.
- On-site diesel engine diagnostics and repair
- Fuel system troubleshooting, injectors, HPFP and lift pumps
- Cooling system repair — radiators, water pumps, thermostats, EGR
- Turbocharger diagnostics and replacement
- DEF and DPF system repair and regen support
- Charging and starting system service
- Belts, hoses, seals and preventative maintenance
- Roadside no-start and breakdown response
Why customers stay with Patriot HD
No Tow Bills
We come to the equipment — you keep the money.
Real Diagnostics
OEM-level scanners for accurate first-time fixes.
Same-Day Service
Most issues diagnosed and repaired in a single visit.
Straight Answers
Transparent pricing before we turn the key.
Built on trust. Backed by results.
Veteran Owned
Integrity, discipline, and quality workmanship on every job.
Mobile Service
We come to your jobsite, fleet yard, farm, or facility.
Fast Response
24/7 emergency response to minimize costly downtime.
Middle Tennessee
Nashville, Franklin, Murfreesboro & every town between.
Frequently Asked Questions
In the words of our customers
"If you're in need of a heavy equipment mechanic, Austin with Patriot HD is the man you're looking for. Austin has all the traits I look for in a mechanic. He answers the phone when you call or gets back to you as soon as he can. He shows up on time, does exceptional work, and stands behind it."
"I'm out of Michigan and had to find somebody around Nashville to fix an old piece of rusty crap — a Moffett at our Nashville store. I called around to a few places and nobody called back except for Austin from Patriot. Talked to Austin — genuinely knows his stuff and got us running again."
"Austin was communicative, knowledgeable and timely. Fixed my skid steer and took the time to help me understand the problems it had. 5 star."
More field services
Heavy Equipment Repair
Mobile maintenance and repair for skid steers, excavators, dozers, wheel loaders and compact track loaders.
Hydraulic Repair & Troubleshooting
Cylinder, pump, hose and valve diagnostics — resolved at your jobsite.
Fleet Maintenance
Preventive maintenance, DOT inspections and service programs for commercial fleets and equipment.
Need it fixed today?
Talk to Austin directly. Most jobs are diagnosed on the same call.
Request Service
We'll respond fast.