Help installation, maintenance, and repair workers in maintenance, parts replacement, and repair of vehicles, industrial machinery, and electrical and electronic equipment. Perform duties, such as furnishing tools, materials, and supplies to other workers; cleaning work area, machines, and tools; and holding materials or tools for other workers.

• Air-Conditioning Installer-Servicer Helper, Window Unit
• Airframe-and-Power-Plant-Mechanic Helper
• Armature-Winder Helper, Repair
• Automobile-Body-Repairer Helper
• Automobile-Mechanic Helper
• Cable-Splicer Helper
• Car-Repairer Helper
• Construction-Equipment-Mechanic Helper
• Diesel-Mechanic Helper
• Elevator-Constructor Helper
• Elevator-Repairer Helper
• Facilities Locator
• Fire-Equipment-Inspector Helper
• Furnace-Installer-and-Repairer Helper, Hot Air
• Gas-Appliance-Servicer Helper
• Gas-Meter-Installer Helper
• Gas-Regulator-Repairer Helper
• Heating-and-Air-Conditioning Installer-Servicer Helper
• Hydroelectric-Machinery-Mechanic Helper
• Industrial-Gas-Servicer Helper
• Instrument-Repairer Helper
• Instrument-Technician Helper
• Laboratory Helper
• Machinist Helper, Outside
• Maintenance Mechanic Helper
• Maintenance-Mechanic Helper
• Maintenance-Repairer Helper, Industrial
• Meter-Repairer Helper
• Millwright Helper
• Motorboat-Mechanic Helper
• Oil-Burner-Servicer-and-Installer Helper
• Ordnance-Artificer Helper
• Overhauler Helper
• Pinsetter-Mechanic Helper
• Powerhouse-Mechanic Helper
• Pump-Servicer Helper
• Refrigeration-Mechanic Helper
• Repairer Helper
• Rigger Helper
• Rigger Helper
• Salvager Helper
• Service Planner
• Service-Mechanic Helper, Compressed-Gas Equipment
• Sewing-Machine-Repairer Helper
• Signal Maintainer Helper
• Solar-Energy-System-Installer Helper
• Spray-Gun-Repairer Helper
• Street-Light-Repairer Helper
• Street-Light-Servicer Helper
• Streetcar-Repairer Helper
• Tractor-Mechanic Helper

• Adjust, connect, or disconnect wiring, piping, tubing, and other parts, using hand tools or power tools.
• Apply protective materials to equipment, components, and parts in order to prevent defects and corrosion.
• Assemble and maintain physical structures, using hand tools or power tools.
• Clean or lubricate vehicles, machinery, equipment, instruments, tools, work areas, and other objects, using hand tools, power tools, and cleaning equipment.
• Disassemble broken or defective equipment in order to facilitate repair; reassemble equipment when repairs are complete.
• Examine and test machinery, equipment, components, and parts for defects, and to ensure proper functioning.
• Hold or supply tools, parts, equipment, and supplies for other workers.
• Install or replace machinery, equipment, and new or replacement parts and instruments, using hand tools or power tools.
• Position vehicles, machinery, equipment, physical structures, and other objects for assembly or installation, using hand tools, power tools, and moving equipment.
• Prepare work stations so mechanics and repairers can conduct work.
• Provide assistance to more skilled workers involved in the adjustment, maintenance, part replacement, and repair of tools, equipment, and machines.
• Tend and observe equipment and machinery in order to verify efficient and safe operation.
• Transfer tools, parts, equipment, and supplies to and from work stations and other areas.

• adhere to safety procedures
• apply adhesives, caulking, sealants, or coatings
• apply cleaning solvents
• assemble and install pipe sections, fittings, or plumbing fixtures
• assemble, dismantle, or reassemble equipment or machinery
• assist mechanic, or extractive or construction trades craft worker
• clean equipment or machinery
• clean rooms or work areas
• construct, erect, or repair wooden frameworks or structures
• fabricate, assemble, or disassemble manufactured products by hand
• inspect machinery or equipment to determine adjustments or repairs needed
• install electronic equipment, components, or systems
• install equipment or attachments on machinery or related structures
• install industrial machinery or related heavy equipment
• lubricate machinery, equipment, or parts
• maintain or repair cargo or passenger vehicle
• maintain welding machines or equipment
• move materials or goods between work areas
• move or fit heavy objects
• operate cleaning equipment
• perform safety inspections in industrial, manufacturing or repair setting
• read blueprints
• read work order, instructions, formulas, or processing charts
• repair or replace electrical wiring, circuits, fixtures, or equipment
• repair or replace malfunctioning or worn mechanical components
• replace electronic components
• test mechanical products or equipment
• understand service or repair manuals
• understand technical operating, service or repair manuals
• use basic plumbing techniques
• use hand or power tools
• use knowledge of metric system
• use pneumatic tools