Analyze test results, machine error messages, and information obtained in order to diagnose equipment problems. Clean, lubricate, and adjust parts, equipment, and machinery. Disassemble machinery and equipment to remove parts and make repairs. Operate newly repaired machinery and equipment to verify the adequacy of repairs. Assures the proper operation of a wide variety of mechanical machines and devices including pumps, engines, motors, conveyors, compressors, and laboratory equipment by observing mechanical machines in operation and listening to them to locate the source of malfunctions, lubricating and cleaning mechanical machines,