Responsibilities: Installs, maintains, and repairs machinery, equipment, and systems following specifications, blueprints, manuals, and drawings, using hand tools, power tools, hoists, cranes, welding equipment, measuring, and testing equipment: Visually inspects and tests machinery and equipment, using electrical and electronic test equipment. Listens for unusual sounds from machines or equipment to detect malfunctions and discusses machine operation variations with supervisors or other maintenance workers to diagnose problems or repair machines.