What We Do
Our Services
From routine maintenance to performance, Patriot Diesel handles every job with the same commitment: done right, done on time, and never with dealership runaround.
Engine Repair
Diesel engine repair. Whether you're dealing with a loss of power, excessive smoke, overheating, or a full-blown failure, our technicians have the experience to diagnose and repair it correctly. We work on all major diesel platforms including Cummins, Detroit, CAT, and Paccar.
- Engine diagnostics & inspection
- Cylinder head repair & replacement
- Injector service & replacement
- Turbocharger repair
- Cooling system repair
Preventive Maintenance
The best breakdown is the one that never happens. Our preventive maintenance programs are built around your schedule and your routes — keeping your rig in peak condition so you stay on the road and out of the shop.
- Oil & filter changes
- Fuel filter service
- Air filter replacement
- Coolant flush & fill
- Belt & hose inspection
- Multi-point safety inspection
Diagnostics
Modern diesel trucks are complex machines. Our shop uses advanced diagnostic equipment to read fault codes, analyze live data, and pinpoint problems fast — saving you time and money by getting it right the first time.
- Computer diagnostics & fault code reading
- Emissions system diagnosis
- Electrical system testing
- Fuel system pressure testing
- DEF/SCR system diagnosis
- DPF inspection & service
Utility Truck Services
We specialize in bucket truck maintenance and repair — keeping your aerial work platform safe, compliant, and ready for the job. From hydraulic system service to boom inspections, we handle the full scope of bucket truck upkeep so your crew stays productive and protected.
- Hydraulic system inspection & repair
- Boom & bucket inspection
- Outrigger & stabilizer service
- PTO & hydraulic pump service
- Annual ANSI/OSHA compliance inspection
- Dielectric testing coordination
Fleet Repair & Management
Running multiple trucks means downtime costs you twice. Our fleet programs keep your entire operation moving with scheduled maintenance, priority scheduling, and consolidated billing — one shop, one point of contact, every truck covered.
- Scheduled fleet maintenance programs
- Priority scheduling for fleet customers
- Consolidated invoicing & reporting
- DOT inspection tracking & compliance
- Breakdown coordination
- Dedicated fleet service advisor
Brake Systems
Stopping a loaded rig demands a brake system you can trust. We inspect, service, and repair all components of your air brake system — keeping you compliant and safe on every run.
- Air brake inspection & adjustment
- Brake pad & shoe replacement
- Brake drum & rotor service
- Air compressor service
- Slack adjuster replacement
- DOT brake compliance inspection
Electrical Systems
Electrical gremlins can sideline a truck fast. Our technicians are trained to trace and repair wiring issues, charging system failures, lighting problems, and more — getting your systems back online quickly.
- Alternator & starter repair
- Battery testing & replacement
- Wiring harness repair
- Lighting & trailer connections
- Instrument cluster diagnostics
- Charging system service
DOT Inspections
Stay compliant and avoid costly roadside violations. We perform thorough DOT Annual Inspections on Class 7 and Class 8 trucks and trailers — issuing your inspection report and decal on the spot so you can get back on the road with confidence.
- Annual DOT vehicle inspection
- Trailer DOT inspection
- Brake system compliance check
- Lighting & reflector inspection
- Steering & suspension check
- Inspection report & decal issued
Custom Performance
Get more out of your diesel. Whether you're looking for better fuel economy, increased horsepower, or improved towing capacity, our performance upgrades are engineered for working trucks — not just show rigs.
- ECM tuning & reprogramming
- Exhaust system upgrades
- Cold air intake installation
- Intercooler upgrades
- Turbocharger upgrades
- Fuel system performance upgrades
Need Service? Call Us Today.
Talk to a real diesel mechanic — not a call center. We'll tell you exactly what your truck needs.
(443)-406-6794
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