When your trailer is part of a heavy-duty combination unit, downtime doesn’t just affect the trailer—it halts your entire operation. At Trailer Works
in Buford, GA, we provide specialized repair and maintenance services for diesel engines, transmissions, and driveline systems in heavy trucks that operate in tandem with trailers. These integrated services allow us to support both trailer and power unit repair under one roof, reducing delays and ensuring full mechanical readiness for long hauls or demanding local workloads.
Diesel Engine Diagnostics and Service
Modern diesel engines require precise diagnostics to identify performance issues, emissions problems, and mechanical faults. We service a range of heavy-duty engines used in commercial trucks, from mid-duty box trucks to Class 8 tractors. If your check engine light is active or you’ve noticed loss of power, poor fuel efficiency, or unusual noises, our technicians use advanced scan tools to retrieve fault codes, run compression tests, and inspect fuel and air systems.
Fuel System and Injector Service
Fuel system integrity is vital for power and efficiency. We inspect injectors for leaks or misfiring, test fuel pressure, and clean fuel rails and lines. If your truck suffers from hard starts or excessive smoke, injector timing and performance may be the issue. We replace worn injectors with OEM-grade parts and verify functionality post-installation.
Turbocharger and Emissions Component Repair
Turbocharged engines are common in heavy-duty trucks, and issues like boost loss, smoke, or reduced torque often point to worn turbochargers or sensor failures. We diagnose turbo lag, inspect wastegates, and replace damaged intercooler hoses or EGR valves. For emissions systems, we service diesel particulate filters (DPFs), SCR systems, and NOx sensors to restore compliance and drivability.
Transmission Repairs and Replacements
A malfunctioning transmission affects both performance and safety. We service both manual and automatic heavy-duty transmissions, including Allison, Eaton Fuller, and Meritor models. Whether you're dealing with slipping gears, hard shifts, or a failure to engage, we begin with a full fluid and filter check, followed by electronic diagnostics and pressure testing.
Clutch and Flywheel Repairs
If you’re experiencing excessive pedal play, grinding, or slippage, the issue may lie with the clutch or flywheel. We inspect for worn discs, damaged pilot bearings, and warped flywheels. When required, we replace clutch packs and resurface flywheels to restore smooth operation and proper torque transfer between the engine and transmission.
Driveline and Axle Diagnostics
The driveline is responsible for transferring power from the transmission to the drive wheels. When vibrations, clunks, or rotational noise develop, it’s often due to worn U-joints, imbalanced drive shafts, or failing differentials. We inspect all driveline components for wear, misalignment, and lubrication issues.
U-Joint and Carrier Bearing Replacement
Worn universal joints are a common cause of vibration and noise at highway speeds. Our technicians inspect for excessive play, rust, or binding. We replace failing joints and press-fit new carrier bearings into place when needed. Once installed, we rebalance and align the drive shaft for smooth rotation and longevity.
Differential Inspections and Sealing
We service standard, limited-slip, and locking differentials on heavy-duty trucks. This includes gear inspections, backlash adjustments, and replacement of pinion and axle seals. Proper fluid level and differential lubrication are checked at each service to prevent premature wear and failure under load.
Cooling System Checks and Radiator Service
Engine overheating in heavy-duty trucks can lead to catastrophic failures. We inspect radiators, coolant hoses, thermostats, and fans for wear or malfunction. If needed, we flush and refill coolant systems, replace failing radiators, and ensure the engine stays within operating temperature during extended hauling.
Powertrain Integration with Trailer Systems
Many driveline issues impact trailer performance—especially on trucks running integrated brake controllers, PTO systems, or auxiliary trailer controls. We evaluate how the truck’s engine and transmission interact with trailer systems to ensure synchronization, especially for dump trailers, reefer units, or flatbeds with hydraulic controls. Power output and trailer wiring are checked during diagnostics to identify any engine-side faults affecting trailer operation.
Preventive Maintenance for Heavy-Duty Truck Units
Scheduled maintenance prevents major failures and keeps your rig operational. We provide regular engine oil changes, transmission fluid swaps, driveline lubrication, and filter replacements. These services are tailored to mileage intervals, engine hours, and load frequency to match your operational schedule.
Serving Buford’s Heavy Truck and Trailer Community
Trailer Works supports independent operators, logistics companies, and construction fleets across Buford, GA with combined truck and trailer service. This unified approach eliminates the need for separate repair facilities and simplifies fleet maintenance. Whether your power unit needs driveline service or your trailer requires alignment, our team ensures both are road-ready from the same trusted shop.
Our shop handles diagnostics, part replacements, and full mechanical repairs with minimal downtime. If you're experiencing engine hesitation, transmission delays, or drive shaft vibration, Trailer Works
can restore performance and prevent costly breakdowns.
