Duties may include, but are not limited to the following: Performs troubleshooting, root cause analysis, repair, rebuilding, overhauling, and inspection procedures in relation to a variety of NCTD bus, train, and support vehicle equipment; Removes, repairs, rebuilds, overhauls, and installs components of NCTD buses, train, and support vehicle equipment such as power plants, transmissions, differentials, axles, wheels, hydraulic and electrical systems, climate control systems, valves, pumps, tanks, compressors, heat exchangers, piping, alternators, generators, distributors, starters, blowers, and fuel metering devices; Installs and adjusts sub-components on related engine components and repairs and calibrates various gauges and meters; Maintains and installs lighting circuits, alarms, safety circuits, interlocks, ignition systems, environmental systems, and related components; Operates and repairs shop equipment and other tools used to maintain, repair, and diagnose vehicle problems; Performs safety and preventive maintenance inspections as required by applicable Federal, State, and NCTD guidelines; Prepares written reports, documents defects and repairs on inspection forms, work orders, or designated computer programs; May familiarize other Mechanics in the proper method of performing their job; Enters data into NCTD's Maintenance Management Information System. Knowledge of theory, operation, and repair of gasoline, compressed natural gas and diesel powered vehicles, including engines, transmissions, ignitions, and electrical, hydraulic/pneumatic, cooling, heating, and brake systems; Knowledge of industrial safety rules, regulations, and procedures as applied to bus and rail facilities.