Includes different forms of heavy equipment such as, but not limited to; skid steers, loaders, dozers, graders, generators, water trucks, fuel trucks, lube trucks, forklifts, aerial work platforms, scissor lifts, heavy haul trailers, passenger vehicles, heavy-haul trucks, yard mules, excavators, backhoes, trenchers, pile drivers, ATVs, etc. Performs routine preventive maintenance on heavy construction equipment in a field environment (i.e., lubrication and replacement of brakes, belts, hoses, filters, fluids, and engine tune-up).