Keep equipment available for use by inspecting and testing vehicles; completing preventative maintenance such as: engine tuneups, oil changes, and replacing filters; maintain vehicle functioning condition by listening to operator complaints; conducting inspections; repairing engine failures; diagnosing and repairing mechanical and electrical systems malfunctions; identifying worn and damaged parts; replacing parts and components; read precision instruments such as micrometers, dial indicators, bore gauges, voltmeters, digital multimeters, calibrators and other electronic diagnostic tools; verify vehicle serviceability by conducting test drives; adjusting controls and systems; comply with state vehicle requirements as established by DOT, EPA, ICC, and OSHA by testing engine, safety, and combustion control standards; maintain vehicle record by noting service and repairs in computer; complete all paperwork and electronic or manual records in an accurate and timely manner; and maintain personal hand tools adequate in type, number, and in proper condition to safely perform the functions of the position.