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Heavy Diesel Fitter

Open 47d

Primary Objective



  • Check and fix diesel engines, transmissions, and other parts using special tools to find problems and get them working again.
    • Conduct regular maintenance and safety checks on trucks and heavy equipment to prevent breakdowns.
    • Remove, repair, and install engine parts following correct specifications.
    • Find and fix fuel system issues, including injectors and pumps, while keeping the system clean and safe.
    • Find and fix fuel system issues, including injectors and pumps, while keeping the system clean and safe.
    • Inspect and repair air brake systems to make sure they meet safety rules.
    • Repair and maintain hydraulic systems like pumps and cylinders to keep machines operating properly.
    • Perform field repairs and respond to emergency breakdowns using a service truck.
    • Perform on-site field repairs and mobile service calls, including emergency roadside assistance for fleet vehicles and heavy machinery.
    • Test equipment after repairs to ensure it works properly and record results.
    • Repair cooling and heating systems to prevent overheating and keep operators comfortable.
    • Clean and prepare components for inspection using solvent and pressure wash procedures while dispose waste safely following regulations.
    • Ensure safety rules, report hazards, and complete required safety checks.
    • Help improve work processes by identifying common problems and suggesting solutions to reduce downtime.


Soft Skills



  • Time management and organizational skills to prioritize multiple work orders and emergency tasks.
  • Adaptability to changing site conditions, schedules and urgent field repairs.
  • Safety-first mindset with proactive identification and mitigation of workplace hazards.


    Experience Requirement

    • 5+ years' experience on heavy trucks, construction equipment, or industrial diesel engines for junior roles diagnosing and rebuilding diesel engines, transmissions and hydraulic systems.


    Education Qualification

    • Certificate or Diploma in Diesel Technology, Heavy Vehicle Mechanics, or equivalent trade school qualification

    See also

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