Corrects vehicle deficiencies by removing, repairing, adjusting, overhauling, assembling, disassembling, and replacing major assemblies, sub-assemblies, components, parts, or systems, such as, power and drive trains, electrical, air conditioning, fuel, emission, brake, steering, hydraulics; completes machine shop operations; making adjustments and alignments including bearing loads, gear tooth contact, valve mechanisms, governors, oil systems, control linkages, clutches, and traction units. Maintains diesel and gasoline powered equipment and trucks, all makes and models, operation by completing inspections and preventive maintenance requirements; correcting vehicle deficiencies; making adjustments and alignments; keeping records.