The incumbent is responsible for the mechanical maintenance and repair of heavy trucks and heavy road construction and/or maintenance equipment. Equipment includes motor patrol graders, bulldozers, wheeled tractors, front-end loaders, backhoes, rollers, heavy-duty compressors, generators, trucks, etc. Adjust, repair, and/or replace differentials, clutches, transfer cases, power take-offs, front and rear trans-axle assemblies, steering and hydraulic braking systems in potentially adverse field conditions. Dissassemble, repair and reassemble electrical system components. Use specialized diagnostic equipment to diagnose problems.