DougAndrusDistributing
Running a heavy-duty diesel truck fleet is all about keeping things moving—safely, efficiently, and consistently.
Learn how body damage affects commercial truck performance and safety.
Discover the risks of neglecting repairs and how Doug Andrus Distributing
provides expert solutions to keep your fleet efficient, safe, and
road-ready. Contact us today for reliable truck body repair services.
Oil is the lifeblood of any diesel engine. Regular oil changes keep the engine lubricated and prevent wear and overheating. Along with the oil, we check and replace filters—including the oil filter, fuel filter, and air filter—to maintain smooth engine function.
We don't just check levels. We look at oil color, debris presence, and any signs of leaks. These small details often reveal bigger issues before they cause damage.
A well-functioning transmission is critical for long hauls. We inspect fluid levels, check for leaks, and monitor for delayed shifting or unusual sounds. Driveline components like U-joints and differentials are also examined for signs of wear.
Even a small vibration can indicate a driveline imbalance that, if ignored, could lead to transmission failure.
Tires and Wheels
Tires take a beating on the road. During every inspection, we look for signs of uneven wear, punctures, low tread depth, and improper inflation. We also examine wheel alignment and balance, which can greatly affect ride quality and fuel economy.
Underinflated tires wear out faster and reduce fuel efficiency. That’s why this check is one of the first things we do.
Cooling System
Diesel engines run hot. To prevent overheating, we inspect radiator levels, hoses, and connections. We also test the thermostat and water pump function. Coolant flushes are scheduled to remove sediment that can block heat transfer.
Spotting cracks or bulges in a hose before it fails is a simple way we avoid roadside breakdowns.
Electrical System and Battery
We rely heavily on electronic systems to support everything from engine diagnostics to lighting. We check battery terminals, charge levels, alternator output, and wiring integrity. A weak battery can leave a driver stranded or put strain on other systems.
Especially in colder months, staying ahead of battery issues is key.
Brake performance is non-negotiable. We inspect pads, drums, rotors, and fluid systems. Our techs also test air brake systems for pressure consistency and leaks. Brake issues escalate quickly and often show up as uneven wear or longer stopping distances.
Don’t ignore the warning signs—stay ahead of repairs with our breakdown of Common Signs of Mechanical Issues in Heavy-Duty Diesel Trucks.
Suspension and Steering
We inspect shocks, struts, bushings, and power steering fluid levels. If a driver reports odd noises or rough handling, we dive deeper into alignment and wear patterns. Suspension issues not only affect comfort—they impact control and braking.
Learn how even minor dents can lead to major risks on the road by reading How Body Damage Impacts Commercial Truck Safety and Performance.
Delivering like a big trucking company. Caring like a small one. FOR OVER 85 YEARS
