# Helpers--Installation, Maintenance, and Repair Workers > 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. - Code: 49-9098.00 (O*NET-SOC; SOC 2018 49-9098) - Family: [Installation, Maintenance & Repair](https://foundation.org.ai/occupations#family-49), one of its 52 occupations - Tasks: 16 tasks (14 core and 2 supplemental) - Page: https://foundation.org.ai/occupations/49-9098.00 - JSON: https://foundation.org.ai/data/tasks/49-9098.00.json ## What the work is made of 1. Install or replace machinery, equipment, and new or replacement parts and instruments, using hand or power tools. Core task · Task 3083 · Rated by 86 people who do the job, August 2020 2. Examine and test machinery, equipment, components, and parts for defects to ensure proper functioning. Core task · Task 3081 · Rated by 87 people who do the job, August 2020 3. Tend and observe equipment and machinery to verify efficient and safe operation. Core task · Task 3080 · Rated by 86 people who do the job, August 2020 4. Adjust, connect, or disconnect wiring, piping, tubing, and other parts, using hand or power tools. Core task · Task 3082 · Rated by 86 people who do the job, August 2020 5. Clean or lubricate vehicles, machinery, equipment, instruments, tools, work areas, and other objects, using hand tools, power tools, and cleaning equipment. Core task · Task 3084 · Rated by 87 people who do the job, August 2020 6. Hold or supply tools, parts, equipment, and supplies for other workers. Core task · Task 3091 · Rated by 84 people who do the job, August 2020 7. Diagnose electrical problems and install and rewire electrical components. Core task · Task 20152 · Rated by 86 people who do the job, August 2020 8. Disassemble broken or defective equipment to facilitate repair and reassemble equipment when repairs are complete. Core task · Task 3087 · Rated by 86 people who do the job, August 2020 9. Position vehicles, machinery, equipment, physical structures, and other objects for assembly or installation, using hand tools, power tools, and moving equipment. Core task · Task 3090 · Rated by 86 people who do the job, August 2020 10. Transfer tools, parts, equipment, and supplies to and from work stations and other areas. Core task · Task 3086 · Rated by 87 people who do the job, August 2020 11. Adjust, maintain, and repair tools, equipment, and machines, and assist more skilled workers with similar tasks. Core task · Task 20150 · Rated by 85 people who do the job, August 2020 12. Order new parts to maintain inventory. Core task · Task 20151 · Rated by 87 people who do the job, August 2020 13. Apply protective materials to equipment, components, and parts to prevent defects and corrosion. Core task · Task 3085 · Rated by 85 people who do the job, August 2020 14. Design, weld, and fabricate parts, using blueprints or other mechanical plans. Core task · Task 20153 · Rated by 87 people who do the job, August 2020 15. Assemble and maintain physical structures, using hand or power tools. Supplemental task · Task 3088 · Rated by 85 people who do the job, August 2020 16. Prepare work stations for use by mechanics and repairers. Supplemental task · Task 3092 · Rated by 87 people who do the job, August 2020 ## More in Installation, Maintenance & Repair - [Aircraft Mechanics and Service Technicians](https://foundation.org.ai/occupations/49-3011.00): 38 tasks - [Audiovisual Equipment Installers and Repairers](https://foundation.org.ai/occupations/49-2097.00): 11 tasks - [Automotive Body and Related Repairers](https://foundation.org.ai/occupations/49-3021.00): 25 tasks - [Automotive Glass Installers and Repairers](https://foundation.org.ai/occupations/49-3022.00): 18 tasks - [Automotive Service Technicians and Mechanics](https://foundation.org.ai/occupations/49-3023.00): 30 tasks - [Avionics Technicians](https://foundation.org.ai/occupations/49-2091.00): 13 tasks - [Bicycle Repairers](https://foundation.org.ai/occupations/49-3091.00): 14 tasks - [Bus and Truck Mechanics and Diesel Engine Specialists](https://foundation.org.ai/occupations/49-3031.00): 26 tasks - [Camera and Photographic Equipment Repairers](https://foundation.org.ai/occupations/49-9061.00): 15 tasks - 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[Maintenance Workers, Machinery](https://foundation.org.ai/occupations/49-9043.00): 18 tasks - [Manufactured Building and Mobile Home Installers](https://foundation.org.ai/occupations/49-9095.00): 14 tasks - [Mechanical Door Repairers](https://foundation.org.ai/occupations/49-9011.00): 25 tasks - [Medical Equipment Repairers](https://foundation.org.ai/occupations/49-9062.00): 20 tasks - [Millwrights](https://foundation.org.ai/occupations/49-9044.00): 23 tasks - [Mobile Heavy Equipment Mechanics, Except Engines](https://foundation.org.ai/occupations/49-3042.00): 20 tasks - [Motorboat Mechanics and Service Technicians](https://foundation.org.ai/occupations/49-3051.00): 13 tasks - [Motorcycle Mechanics](https://foundation.org.ai/occupations/49-3052.00): 13 tasks - [Musical Instrument Repairers and Tuners](https://foundation.org.ai/occupations/49-9063.00): 29 tasks - [Outdoor Power Equipment and Other Small Engine Mechanics](https://foundation.org.ai/occupations/49-3053.00): 14 tasks - [Precision Instrument and Equipment Repairers, All Other](https://foundation.org.ai/occupations/49-9069.00): no tasks listed - [Radio, Cellular, and Tower Equipment Installers and Repairers](https://foundation.org.ai/occupations/49-2021.00): 30 tasks - [Rail Car Repairers](https://foundation.org.ai/occupations/49-3043.00): 20 tasks - [Recreational Vehicle Service Technicians](https://foundation.org.ai/occupations/49-3092.00): 17 tasks - [Refractory Materials Repairers, Except Brickmasons](https://foundation.org.ai/occupations/49-9045.00): 10 tasks - [Riggers](https://foundation.org.ai/occupations/49-9096.00): 14 tasks - [Security and Fire Alarm Systems Installers](https://foundation.org.ai/occupations/49-2098.00): 16 tasks - [Signal and Track Switch Repairers](https://foundation.org.ai/occupations/49-9097.00): 12 tasks - [Telecommunications Equipment Installers and Repairers, Except Line Installers](https://foundation.org.ai/occupations/49-2022.00): 39 tasks - [Telecommunications Line Installers and Repairers](https://foundation.org.ai/occupations/49-9052.00): 19 tasks - [Tire Repairers and Changers](https://foundation.org.ai/occupations/49-3093.00): 24 tasks - [Watch and Clock Repairers](https://foundation.org.ai/occupations/49-9064.00): 15 tasks - [Wind Turbine Service Technicians](https://foundation.org.ai/occupations/49-9081.00): 12 tasks ## Where this comes from Quoted from O*NET 29.0, U.S. Department of Labor, Employment and Training Administration, under CC BY 4.0: free to copy and reuse, with credit. 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