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Diesel Mechanic Service Technician

Cookeville Truck Repair and Maintenance Center
Cookeville, TN Full Time
POSTED ON 7/11/2026
AVAILABLE BEFORE 11/8/2026

Overview
Join the TA team as a Diesel Mechanic Service Technician and become a vital part of maintaining and repairing semi trucks. This role offers an exciting opportunity to apply your mechanical expertise and troubleshoot complex systems. You’ll be instrumental in ensuring equipment operates safely, efficiently, and reliably across various industries. If you thrive in a fast-paced environment and have a passion for heavy equipment repair, this is the perfect role for you to grow your career!

Duties

  • Perform comprehensive diagnostics and repairs on diesel engines, transmissions, hydraulic systems, suspensions, brakes (including air brake systems), and HVAC components on semi trucks
  • Conduct routine maintenance tasks including oil changes, tire service, alignment checks, and general tractor trailer inspections to ensure optimal performance
  • Utilize schematics and OEM manuals to troubleshoot electrical systems, wiring harnesses, and electronic controls with precision
  • Use parts or modify equipment using hand tools, power tools, welding, soldering, and assembly techniques to meet specific repair needs
  • Operate heavy machinery safely during repairs or testing procedures while adhering to safety protocols and industry standards
  • Document all repairs accurately in service records and communicate effectively with customers regarding maintenance needs or repair progress
  • Assist with heavy lifting tasks and perform welding or fabrication work as required to restore equipment functionality

Experience

  • Proven mechanic experience working with heavy-duty diesel engines and industrial equipment in a dealership or service environment
  • ASE Certification recommended
  • Strong knowledge of automotive diagnostics tools, schematics interpretation, and electrical troubleshooting techniques
  • Skilled in the use of hand tools, power tools, welding equipment, and power lifting devices for equipment repair and fabrication tasks
  • Experience performing brake repairs, including air brake systems and aligning or calibrating heavy machinery for optimal operation
  • Ability to read technical manuals and schematics accurately
  • Excellent customer service skills combined with the ability to work independently or as part of a team in a fast-paced environment. Join us today to leverage your mechanical expertise in a role that challenges you daily while supporting the vital operations of our clients’ fleets!

Pay: $28.00 - $32.00 per hour

Benefits:

  • On-the-job training

Work Location: In person

Salary : $28 - $32

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