Inspects repairs, overhauls and tests major systems including gasoline, diesel, electric powered hybrid, multi-fuel, turbine, and other types of internal combustion engines, which may be turbo-charged or blower assisted, automatic or manual transmissions, including those with power take offs, cross-drive transmissions, hydraulic, electric, pneumatic systems and controls, fluid pumping systems, turrets, winches and four wheel steering systems. Systematically analyzes malfunctions and the cause of mechanical failure by means of visual and auditory checks, uses computer-controlled test equipment, engine analyzers, compression testers, voltmeters, ohmmeters and pressure gauges in order to determine the exact nature of extent of repairs or adjustments necessary to complete work.