Electric Motor and Switch Assemblers and Repairers

Test, repair, rebuild, and assemble electric motors, generators, and equipment.

Job Task

• Assembles electrical parts, such as alternators, generators, starting devices, and switches, following schematic drawings, using hand, machine, and power tools.
• Repairs and rebuilds defective mechanical parts in electric motors, generators, and related equipment, using hand tools and power tools.
• Rewinds coils on core while core is in slots, or makes replacement coils, using coil-winding machine.
• Rewires electrical systems and repairs or replaces electrical accessories.
• Installs, secures, and aligns parts, using hand tools, welding equipment, and electrical meters.
• Replaces defective parts, such as coil leads, carbon brushes, and connecting wires, using soldering equipment.
• Tests for overheating, using speed gauges and thermometers.
• Reassembles repaired electric motors to specified requirements and ratings, using hand tools and electrical meters.
• Records repairs required, parts used, and labor time.
• Refaces, reams, and polishes commutators and machine parts to specified tolerances, using machine tools.
• Cuts and forms insulation and inserts insulation into armature, rotor, or stator slots.
• Inspects parts for wear or damage, or reads work order or schematic drawings to determine required repairs.
• Tests charges and replaces batteries.
• Adjusts working parts, such as fan belt tension, voltage output, contacts and springs, using hand tools, and verifies corrections, using gauges.
• Cuts and removes parts, such as defective coils and insulation.
• Measures velocity, horsepower, r.p.m., amperage, circuitry, and voltage of unit or parts, using electrical meters and mechanical testing devices.
• Disassembles defective unit, using hand tools.
• Lifts units or parts, such as motors or generators, using crane or chain hoist.
• Scrapes and cleans units or parts, using cleaning solvent, and lubricates moving parts.

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