What is an Industrial Maintenance Technician?

Industrial Maintenance Technicians install, repair and maintain commercial or industrial machinery in buildings, a plant, or a manufacturing setting. These technicians ensure all machines function properly through troubleshooting and preventative maintenance service.

Industrial Maintenance Technicians:

  • Read manuals to understand equipment and controls
  • Disassemble machinery and equipment when it needs maintenance or repair
  • Perform tests and operate machinery to ensure it functions properly
  • Adjust and calibrate equipment and machinery to optimal specifications

Related: Industrial Maintenance Technician Program Outline


A long-term career with a good salary, job advancement opportunities and the chance to work with your hands and cutting-edge technology.

Become an industrial maintenance technician through AJAC’s apprenticeship program. Get paid while learning on the job and attend classes only one night a week! To find out how you can become an apprentice and launch your career in aerospace or manufacturing, visit AJAC’s Get Started Section.

On-the-Job Training Competencies:

OJT Competency

Approximate OJT Hours

Machine Operation


Installation of Machinery & Equipment


Maintenance of Machinery & Equipment


Repair of Machinery & Equipment




Maintenance Technician Apprentices Take the Following Classes:

  • Engineering Drawings – Reading and interpreting engineering drawings and schematics, and basic drafting
  • Lifting & Rigging – Practical application and safe operation of lifting equipment
  • Precision Machining – Manual machine tool setup and operation
  • Machine Automation Theory – Computer numerical control (CNC) and programmable logic controllers (PLCs)
  • Materials, Processes and References – Metallurgy, material properties and characteristics
  • Maintenance Welding – Hands-on experience with essential welding and cutting practices
  • Math for Industrial Maintenance – Practical application of industrial maintenance mathematics
  • Maintenance Machining – Techniques for operating lathes, milling machines, and machine tools
  • Electrical Systems – Industrial electrical theory, components, and systems
  • Mechanical, hydraulic and pneumatic system – Fundamental theories and practical application.