Entry Senior

Heavy Duty Equipment Mechanic

About This Career

Heavy Duty Equipment Mechanics repair, troubleshoot, adjust, overhaul and maintain mobile heavy duty equipment for oil and gas-related construction and operations activities.  They inspect equipment and machines to diagnose defects. They do preventative maintenance on industrial and construction vehicles such as bulldozers, graters and excavators.  They might be required to have basic welding or soldering skills to make mechanical or electrical repairs respectively. While Heavy Duty Equipment Mechanics mostly work on mobile equipment, they could also work on diesel motors, hydraulics, etc. that are found in plants and rigs.

Working with a combination of heavy machinery, electronics and computers is expected as almost all highway or off-highway equipment have multiple electrical control systems. Heavy Duty Equipment Mechanics often diagnose equipment problems by plugging a laptop into the electronic control module (ECM) of a machine.  

Education: A high school diploma (or equivalent) is typically required.

Employment: This occupation is typically employed in the oil sands and oil and gas services sectors of the oil and gas industry.

Example titles: Construction Equipment Mechanic, Equipment Technician, Field Mechanic, Field Service Technician, Field Technician, Heavy Equipment Mechanic, Heavy Equipment Technician, Mechanic, Mobile Heavy Equipment Mechanic

Work Activities
Documenting and Recording Information 
Maintaining accurate records of all service, repair and other work.
Evaluating Information
Performing a full safety review analysis of the vehicle in order to detect potential problems.
Handling and Moving Objects
Dismantling and reassembling heavy equipment using hoists and hand tools.
Making adjustments to functional parts and controls in order to increase responsiveness and safety.
Inspecting Equipment, Structures or Material
Inspecting machines or heavy equipment to diagnose defects.
Examining parts for damage or excessive wear using micrometers and gauges.
Judging the Qualities of Things, Services or People
Testing machines or equipment to ensure their operating efficiency.
Performing Quality Assurance
Testing mechanical products and equipment after their repair or assembly to ensure proper performance and compliance with manufacturers' specifications.
Maintaining quality programs.
Processing Information
Reading and understanding operating manuals, blueprints and technical drawings.
Repairing and Maintaining Electrical Equipment
Repairing, rewiring and troubleshooting electrical systems.
Repairing and Maintaining Mechanical Equipment
Repairing and replacing damaged or worn parts.
Cleaning, lubricating and performing other routine maintenance work on equipment and vehicles.
Fitting bearings to adjust, repair or overhaul mobile mechanical, hydraulic and pneumatic equipment.
Adjusting, maintaining and repairing or replacing subassemblies, such as transmissions and crawler heads, using hand tools, jacks and cranes.
Welding or soldering broken parts and structural members using electric or gas welders and soldering tools.
Scheduling Work and Activities
Scheduling maintenance for industrial machines and equipment, and keeping equipment service records.
Solving Problems and Making Decisions
Diagnosing faults or malfunctions to determine the required repairs using engine diagnostic equipment such as computerized test equipment and calibration devices.
Training and Teaching Others
Assisting in the training of new employees, apprentices and employees in lower classifications.
Computers and Electronics
Public Safety and Security
Equipment Maintenance
Career Path
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How Can I Work in LNG?

As Canada prepares for the launch of a liquefied natural gas (LNG) sector, this occupation will play a key role in: 

  • LNG export facility construction
  • Natural gas pipeline construction

When LNG takes off, you can be a part of the action!

Working Conditions
  • Field 2
    Field Visits
  • Road
    Remote Locations
  • Arrow
    Shift Work
  • Standing
    Long Periods of Standing
  • Physical
    Physically Demanding
  • Relocation
  • Variable weather
    Variable weather
  • Overtime
    Some Overtime Required
Similar Jobs In Other Industries
Careers also exist in the following industries:
  • Construction of buildings (non-residential and residential)
  • Forestry and logging
  • Heavy and civil engineering construction
  • Mining and quarrying
  • Repair and maintenance
  • Support activities for agriculture and forestry
  • Truck transporation
Job Details

Job Category



Oil and gas services

Oil sands



Qualifications + Experience


  • High School Diploma (or equivalent)


  • Completion of a three- to five-year apprenticeship program is required to become a certified tradesperson. Another route into apprenticeship training is a pre-apprenticeship foundation program. In some provinces, both of these routes can begin in high school.
  • The Red Seal endorsement is the interprovincial standard of excellence, and is available to tradespersons upon successful completion of the interprovincial Red Seal examination.
  • Construction Safety Training System (CSTS)
  • Pipeline Construction Safety Training (PCST)
  • H2S Alive
  • Standard and emergency first aid
  • Workplace Hazardous Materials Information System (WHMIS)