RV & Semi Truck Repair Services in Jacksonville, FL
From preventive maintenance to emergency roadside repairs, Jax Truck Works keeps your vehicles road‑ready.
Complete Care for Heavy-Duty Vehicles
Preventive Maintenance
Oil changes, brake inspections, fluid checks, and DOT compliance services.
Engine Diagnostics & Repairs
Advanced diagnostics and expert diesel & gas engine repairs.
Brakes & Suspension
Full brake service, suspension repairs, and safety checks.
Electrical Systems
Alternators, wiring, RV lighting, and complete power system repairs.
Trailer Service
Trailer repair, alignment, and tire replacement for fleets and independents.
Cooling Systems
Radiators, cooling units, and A/C services for reliable performance.
Dry Ice Cleaning
A non-abrasive and environmentally friendly cleaning process used to remove various contaminants.
Welding & Fabrication
Structural modifications and repairs to components like frames, trailers, or specialized equipment.
Transmission Services
Transmission repairs and replacement to ensure smooth gear shifts and optimal power transfer.
Specialized RV Repair Services
- RV plumbing & water systems
- Awning repair & replacement
- Slide-out and leveling systems
- AC & heating units
- Interior & exterior electrical systems
Expert Semi Truck Repair & Fleet Services
- Transmission service & clutch repair
- Engine repair & maintenance
- Suspension & steering repair
- Brake services
- Cooling systems & radiators
- Welding and fabrication
- Restoration of heavy-duty car carrier trucks and trailers
- DEF Service
Diesel Exhaust Fluid (DEF)
System Service & Repair
When your DEF system acts up, you don’t just lose power, you lose time, money, and your load schedule. A simple DEF fault can send your truck into 5-MPH derate, trigger a “No Start” countdown, or leave you stuck on the side of the road. We get calls for this every single day because these failures shut big rigs down fast.
At Jax Truck Works, we provide quick, accurate DEF diagnostics and repair for all makes and models. No long dealer waits. No guesswork. Just fast, dependable service to get your truck moving again.
Common DEF Problems We Fix
If you’re seeing any of these, the clock is already ticking:
DEF system fault / SCR fault
Truck stuck in derate mode
Won’t regen or keeps failing regen
Incorrect DEF level reading
Frozen or clogged DEF lines / injectors
Low DEF pressure or pump failure
Crystallized DEF or contamination
We troubleshoot the real cause, not just the code — pump pressure, sensors, heaters, injectors, NOx sensors, SCR efficiency, and wiring.
Fast Turnaround to Keep You Moving
We know every hour down costs you money. That’s why most DEF repairs are same day, and we stock the most common parts:
DEF pumps
Level sensors
Dosing injectors
Heaters & lines
If you’re stuck and can’t risk the truck shutting down, call us.
We work efficiently so your downtime stays minimal.
Expert DEF system diagnostics & repair in Jacksonville.
All Makes. All Models. All DEF Systems.
Freightliner • Kenworth • Peterbilt • Volvo • International • Mack • Western Star • Medium-duty trucks & more.
If your truck has a DEF system – we repair it.
Accessorize For Success
Truck Accessories, Parts & Repairs in Jacksonville, FL
Jax Truck Works provides more than just expert semi truck repair and RV maintenance. We also carry a full range of high-quality truck accessories and spare parts to improve performance, durability, and style. From practical upgrades like lighting, tires, and tool storage to stylish additions that enhance your truck’s appearance, our shop has everything you need.
Stop by our Jacksonville repair shop and you’ll find reliable products backed by a team that truly cares about keeping drivers on the road. We’re committed to building lasting relationships through honest service, dependable repairs, and quality parts.
Connect with us today and see why drivers across Jacksonville trust us to keep their trucks and RVs in peak condition.
Your semi truck is the backbone of your business, and keeping it running smoothly is our top priority. With a strong focus on quality and customer satisfaction, we deliver services that you can rely on. Don’t wait for breakdowns to slow you down, partner with a trusted repair team that ensures your vehicle performs at its best.
Contact us today and see why drivers across Florida choose us to keep their trucks moving forward.
Let’s Get You Back on the Road!
When you choose Jax Truck Works, you’re not just scheduling a repair; you’re securing reliable service that keeps your RV or Semi-truck running at its best. From routine maintenance to emergency repairs, our team is here to keep you moving.
Ready for dependable RV and truck repair in the Jacksonville area? Please fill out the form below, and let’s get your vehicle road-ready today.
Get In Touch
*Please note that calling the shop will result in a faster response.