1-573-468-5138

Heavy Duty vehicle service and repair

Services

Harmon Truck Service provides maintenance and repair services for commercial vehicles. We service diesel trucks, trailers, motor homes, coaches, emergency vehicles, hy-rail, construction equipment, and heavy equipment.

Alignments

Top of the line laser alignment and alignments on class 4, 5, 6, 7, and 8 trucks, trailers, all classes of motor homes, coaches, and emergency vehicles.

Engine Conversions

Are you happy with your truck but not your engine? Harmon Truck Service offers many different conversion options for your truck.

Hy-rail Service & Repair

FRA inspections, repair, alignment, adjustment, and maintenance services for hy-rail equipment.

Coach/Bus

We offer a full array of coach/bus service and repair options so you can get back on the road faster.

Construction & Heavy Equipment

In-house or on-site service and repairs for your construction and heavy equipment. Call for details.

Rehab & Accident Repair

Whether you’ve had an accident or want to bring that old worn-down unit back to life, we can help.

Engine Repair

Up-to-date, premium diagnostics and repair for everything from the smallest concern to complete engine overhauls and replacements. OEM and after market engines and parts are available for CAT, Cummins, Detroit Diesel, International, Mack, Volvo, and more.

Transmission Repair

In-depth transmission diagnostics and repair. We stock Meritor, Eaton, and Allison components.

Contact our Service Department

1-573-468-5138

Training, Tools and Technology

Our service department has extensive knowledge of all makes and models, so we can service all your heavy duty vehicles and equipment. In addition, our technicians have up-to-date training to remain on top of current technology.  The shop offers a complete selection of OEM Specialty Tooling and Software with state of the art testing equipment and is DDC/MBE certified.

  • Volvo
  • Mack
  • Kenworth
  • Peterbilt
  • Freightliner
  • Western Star
  • International
  • Isuzu

Training, Tools and Technology

Our service department has extensive knowledge of all makes and models, so we can service all your heavy duty vehicles and equipment. In addition, our technicians have up-to-date training to remain on top of current technology.  The shop offers a complete selection of OEM Specialty Tooling and Software with state of the art testing equipment and is DDC/MBE certified.

  • Volvo
  • Mack
  • Kenworth
  • Peterbilt
  • Freightliner
  • Western Star
  • International
  • Isuzu