Work involves troubleshooting, repairing, and/or overhauling major components and systems such as engines, transmissions, differentials and transaxles, electronic fuel injection systems, emission control systems, and related electrical, electronic, hydraulic, fuel, and other assemblies.  Tears down, adjusts, repairs, reassembles, and runs operational checks on components of these systems following instructions contained in technical manuals.  Isolates and repairs complex malfunctions which are often difficult to trace by a combination of visual and auditory examinations and uses a wide variety of test equipment such as computerized engine analyzers, compression testers, test benches, oscilloscopes, multimeters, and special feeler and dial gauges.  Disassembles, repairs, r