Troubleshoots, inspects, tests and analyzes vehicle computer/electrical control systems, mechanical and hydraulic systems, lubricating, cooling, air conditioning and exhaust systems, engine electrical systems, engine fuel-air systems, electronic/pneumatic controlled automatic transmission and differentials, power dividers, power trains, brakes, steering and suspension systems. Adjusts and overhauls engine mechanical systems, state of the art systems, electrical, air conditioning, fuel-air, emission control, power trains, gear reduction systems, electronic/pneumatic controlled automatic transmissions, differentials, power dividers and brakes, steering and suspension system components.