Heavy-Haul Trailer Specialists Serving Will & Grundy Counties
When you’re hauling oversized or heavy equipment, you depend on your removable gooseneck (RGN), Landoll, lowboy, or Cottrell car hauler trailer to perform flawlessly. Any failure—hydraulic, structural, or mechanical—can shut down your operation and create serious safety risks. At J&A Fleet Maintenance & Repairs, we deliver professional, dependable RGN trailer repairs for fleets, heavy-haul operators, construction companies, and owner-operators across the Chicagoland area.
Whether your trailer uses a pony motor, a PTO-powered hydraulic system, or a fully integrated hydraulic package, our technicians provide fast, accurate diagnostics and reliable repair.
Heavy-Haul Support
- Hydraulic, structural & mechanical repairs
- Pony motor & PTO diagnostics
- Fleets, heavy-haul operators, & contractors
If your RGN won’t detach, lift, or lock properly, we’ll get it functioning safely and reliably.
Expert RGN Trailer Repair Services
RGN trailers take a tremendous beating. These heavy-haul trailers routinely move massive excavators, dozers, cranes, pavers, and industrial machinery. Over time, the stress causes hydraulic failures, structural cracks, and mechanical problems that require specialized repair—not just standard trailer service. We service all major RGN manufacturers, including XL Specialized Trailers, Fontaine, Trail King, and Talbert.
Complete RGN Trailer Service & Repair
From hydraulic system failures to structural damage and brake issues, J&A Fleet Maintenance & Repairs offers full-service solutions for RGN and lowboy trailers. We work on all major RGN brands, including XL Specialized Trailers, Fontaine, Trail King, and Talbert.
Hydraulic System Repair & Troubleshooting
We service all hydraulic components involved in raising, lowering, and locking the gooseneck, including:
- Hydraulic cylinders
- Pumps & valves
- Quick-connect couplers
- Hydraulic hoses & fittings
- Contaminated or low fluid systems
- Slow, weak, or non-responding neck movement
If your neck won’t detach, lock, or lift properly, we’ll get it functioning safely.
Structural & Welding Repairs
Heavy-haul loads can cause structural damage over time. We provide complete repair solutions for RGN trailers, lowboys, Landoll trailers, and Cottrell car haulers We repair:
- Frame cracks
- Bent or twisted necks
- Broken crossmembers
- Deck plate damage
- Damaged locking mechanisms
- Stress fractures from overloading
Our welding and fabrication ensure your trailer stays strong, safe, and road-ready.
Electrical, Axles & Brake System Repairs
We also handle the critical systems that keep your RGN DOT-compliant and ready for the road:
- Wiring & lighting repairs
- ABS faults
- Axle alignment
- Brake chambers, shoes & drums
- Hub & bearing service
- Air suspension components
We make sure your heavy-haul setup is reliable from front to back.
Pony Motor Repair (Auxiliary Engine Systems)
Many RGN trailers rely on pony motors to power hydraulic functions. These small gas or diesel engines are known for issues like no-starts, fuel problems, weak output, and pump failure. J&A Fleet repairs all pony motor types, including Honda, Briggs & Stratton, Yanmar, Kubota, Kohler, and more.
Common pony motor services:
- Carburetor & fuel system cleaning
- Starter & charging system repair
- Overheating diagnostics
- Hydraulic pump coupling issues
- Engine tune-ups & rebuilds
- No-start or low-power conditions
If your pony motor isn’t giving you the power you need, we’ll restore it fast.
PTO System Repairs (Truck-Powered Hydraulics)
Many modern RGNs use a PTO-mounted hydraulic pump driven by the tractor. When this system fails, the entire trailer becomes inoperable. We diagnose and repair:
- PTOs not engaging
- Bad solenoids or electrical faults
- Low hydraulic pressure or flow
- Leaking PTO seals
- Broken gears or internal failures
- Hydraulic pump replacement
We get your hydraulic system working smoothly—whether powered by your truck or an auxiliary motor.
Why Heavy-Haul Operators Choose J&A Fleet
- Mobile service across Will & Grundy Counties
- Fast on-site response—we come to your jobsite, yard, or roadside
- Advanced diagnostics for hydraulic, electrical, and mechanical systems
- Experienced technicians specializing in RGN, lowboy, and heavy-haul trailer repairs
- Reliable welding & structural repair capability
- Honest pricing, clear communication, and high-quality workmanship
Your heavy-haul equipment is too valuable to leave to chance. We keep your trailer strong, safe, and ready for the next load.
Serving Will & Grundy Counties and the Chicagoland Area
From Morris to Joliet, Wilmington to Gardner, we provide professional on-site service wherever your trailer is parked or working. If your RGN won’t detach, your pony motor won’t start, or your PTO fails mid-operation, we’ll dispatch a technician quickly.
Schedule RGN, Pony Motor, or PTO Service Today
We’re ready to get your equipment back to work.