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Inspect or test damaged machine parts, and mark defective areas or advise supervisors of repair needs.
||Electric Motor, Power Tool, and Related Repairers
- Inspect and test equipment to locate damage or worn parts and diagnose malfunctions, or read work orders or schematic drawings to determine required repairs.
- Lift units or parts such as motors or generators, using cranes or chain hoists, or signal crane operators to lift heavy parts or subassemblies.
- Test equipment for overheating, using speed gauges and thermometers.
- Position and level battery cells, anodes, or cathodes, using hoists or leveling jacks, or signal other workers to perform positioning and leveling.
||Signal and Track Switch Repairers
- Test and repair track circuits.
- Install, inspect, maintain, and repair various railroad service equipment on the road or in the shop, including railroad signal systems.
- Inspect switch-controlling mechanisms on trolley wires and in track beds, using hand tools and test equipment.
- Test air lines and air cylinders on pneumatically operated gates.
||Musical Instrument Repairers and Tuners
- Play instruments to evaluate their sound quality and to locate any defects.
- Inspect instruments to locate defects, and to determine their value or the level of restoration required.
- Compare instrument pitches with tuning tool pitches to tune instruments.
- Strike wood, fiberglass, or metal bars of instruments, and use tuned blocks, stroboscopes, or electronic tuners to evaluate tones made by instruments.
||Control and Valve Installers and Repairers, Except Mechanical Door
- Test valves and regulators for leaks and accurate temperature and pressure settings, using precision testing equipment.
- Shut off service and notify repair crews when major repairs are required, such as the replacement of underground pipes or wiring.
- Examine valves or mechanical control device parts for defects, dents, or loose attachments, and mark malfunctioning areas of defective units.
- Communicate with workers on the surface while underwater, using signal lines or telephones.
- Inspect and test docks, ships, buoyage systems, plant intakes or outflows, or underwater pipelines, cables, or sewers, using closed circuit television, still photography, and testing equipment.
- Carry out non-destructive testing, such as tests for cracks on the legs of oil rigs at sea.
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