Inspect, operate, or test machinery or equipment to diagnose machine malfunctions. Dismantle machines, equipment, or devices to access and remove defective parts, using hoists, cranes, hand tools, or power tools. Perform routine maintenance, such as inspecting drives, motors, or belts, checking fluid levels, replacing filters, or doing other preventive maintenance actions. Diagnose mechanical problems and determine how to correct them, checking blueprints, repair manuals, or parts catalogs, as necessary. Repair machines, equipment, or structures, using tools such as hammers, hoists, saws, drills, wrenches, or equipment such as precision measuring instruments or electrical or electronic testing devices. Maintain or repair specialized equipment or machinery located in cafeterias, laundries, hospitals, stores, offices, or factories. Assemble, install, or repair wiring, electrical or electronic components, pipe systems, plumbing, machinery, or equipment. Clean or lubricate shafts, bearings, gears, or other parts of machinery. Adjust functional parts of devices or control instruments, using hand tools, levels, plumb bobs, or straightedges. Order parts, supplies, or equipment from catalogs or suppliers. Plan and lay out repair work, using diagrams, drawings, blueprints, maintenance manuals, or schematic diagrams. Perform general cleaning duties of buildings or properties. Paint or repair roofs, windows, doors, floors, woodwork, plaster, drywall, or other parts of building structures. Operate cutting torches or welding equipment to cut or join metal parts. Record type and cost of maintenance or repair work.