to include tune-ups, overhauling engines, transmissions, differentials, clutches, brakes, drive trains, generators, computer-controlled fuel injection and emission related equipment, carburetors, air conditioning, electrical, cooling, suspension, pumps, hydraulic systems, and steering. Operating automotive and general shop equipment to include brake lathes, gas and arc welding equipment, engine analyzers, tire equipment, scanners, and computers; complies with and helps enforce shop safety rules.