||Automotive Service Technicians and Mechanics
- Repair, reline, replace, and adjust brakes.
- Repair, replace, or adjust defective fuel injectors, carburetor parts, and gasoline filters.
- Repair and service air conditioning, heating, engine cooling, and electrical systems.
- Overhaul or replace carburetors, blowers, generators, distributors, starters, and pumps.
- Repair or replace parts such as pistons, rods, gears, valves, and bearings.
- Repair or rebuild transmissions.
||Musical Instrument Repairers and Tuners
- Repair or replace musical instrument parts and components, such as strings, bridges, felts, and keys, using hand and power tools.
- Repair cracks in wood or metal instruments, using pinning wire, lathes, fillers, clamps, or soldering irons.
- Shape old parts and replacement parts to improve tone or intonation, using hand tools, lathes, or soldering irons.
- Repair breaks in percussion instruments, such as drums and cymbals, using drill presses, power saws, glue, clamps, grinding wheels, or other hand tools.
- Replace xylophone bars and wheels.
- Replace defective parts, using hand tools, arbor presses, flexible power presses, or power tools.
- Dismantle engines and repair or replace defective parts, such as magnetos, carburetors, or generators.
- Repair or replace other parts, such as headlights, horns, handlebar controls, gasoline or oil tanks, starters, or mufflers.
- Remove cylinder heads and grind valves to scrape off carbon and replace defective valves, pistons, cylinders, or rings, using hand and power tools.
||Mobile Heavy Equipment Mechanics, Except Engines
- Repair and replace damaged or worn parts.
- Overhaul and test machines or equipment to ensure operating efficiency.
- Adjust, maintain, and repair or replace subassemblies, such as transmissions and crawler heads, using hand tools, jacks, and cranes.
- Fit bearings to adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment.
||Heating, Air Conditioning, and Refrigeration Mechanics and Installers
- Repair or replace defective equipment, components, or wiring.
- Perform mechanical overhauls and refrigerant reclaiming.
- Repair or service heating, ventilating, and air conditioning (HVAC) systems to improve efficiency, such as by changing filters, cleaning ducts, and refilling non-toxic refrigerants.
||Aircraft Mechanics and Service Technicians
- Maintain, repair, and rebuild aircraft structures, functional components, and parts, such as wings and fuselage, rigging, hydraulic units, oxygen systems, fuel systems, electrical systems, gaskets, or seals.
- Replace or repair worn, defective, or damaged components, using hand tools, gauges, and testing equipment.
- Remove, inspect, repair, and install in-flight refueling stores and external fuel tanks.
||Control and Valve Installers and Repairers, Except Mechanical Door
- Disassemble and repair mechanical control devices or valves, such as regulators, thermostats, or hydrants, using power tools, hand tools, and cutting torches.
- Replace defective parts, such as bellows, range springs, and toggle switches, and reassemble units according to blueprints, using cam presses and hand tools.
- Dismantle meters, and replace or adjust defective parts such as cases, shafts, gears, disks, and recording mechanisms, using soldering irons and hand tools.
||Motorboat Mechanics and Service Technicians
- Replace parts, such as gears, magneto points, piston rings, or spark plugs, and reassemble engines.
- Repair or rework parts, using machine tools such as lathes, mills, drills, or grinders.
||Locksmiths and Safe Repairers
- Disassemble mechanical or electrical locking devices, and repair or replace worn tumblers, springs, and other parts, using hand tools.
- Insert new or repaired tumblers into locks to change combinations.
||Outdoor Power Equipment and Other Small Engine Mechanics
- Repair or replace defective parts such as magnetos, water pumps, gears, pistons, and carburetors, using hand tools.
- Replace motors.
||Signal and Track Switch Repairers
- Test and repair track circuits.
- Replace defective wiring, broken lenses, or burned-out light bulbs.
||Coin, Vending, and Amusement Machine Servicers and Repairers
- Replace malfunctioning parts, such as worn magnetic heads on automatic teller machine (ATM) card readers.
- Adjust and repair coin, vending, or amusement machines and meters and replace defective mechanical and electrical parts, using hand tools, soldering irons, and diagrams.
- Replace defective parts of machine, or adjust clearances and alignment of moving parts.
- Weld, repair, and fabricate equipment or machinery.
||Plumbers, Pipefitters, and Steamfitters
- Repair hydraulic or air pumps.
- Repair or remove and replace system components.
||Home Appliance Repairers
- Replace worn and defective parts such as switches, bearings, transmissions, belts, gears, circuit boards, or defective wiring.
- Service and repair domestic electrical or gas appliances, such as clothes washers, refrigerators, stoves, and dryers.
- Adjust, repair, or replace malfunctioning components or assemblies, using hand tools or soldering irons.
||Farm Equipment Mechanics and Service Technicians
- Repair or replace defective parts, using hand tools, milling and woodworking machines, lathes, welding equipment, grinders, or saws.
||Watch and Clock Repairers
- Repair or replace broken, damaged, or worn parts on timepieces, using lathes, drill presses, and hand tools.
||Industrial Machinery Mechanics
- Repair or replace broken or malfunctioning components of machinery or equipment.
||Refractory Materials Repairers, Except Brickmasons
- Reline or repair ladles and pouring spouts with refractory clay, using trowels.