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. · Install injectors, pistons, liners, cam shafts, cylinder heads, rod and main bearings, oil pans, clutches, fan hubs,differentials, fifth wheels, brakes, change or recharge batteries, and replace transmissions and other parts.