"On-Site to Road-Ready!"

On- Site Diesel Doctor 

On Site Diesel Dr – East Tennessee’s Trusted Mobile Diesel Repair Service

With over 20 years of hands-on experience, On Site Diesel Dr is a family-owned and operated business proudly serving East Tennessee with reliable, professional, and prompt mobile on-site diesel repair services. We specialize in heavy equipment and truck repairs, delivering top-quality workmanship directly to your job site or roadside—saving you time, money, and hassle.

From construction equipment and agricultural machinery to commercial truck fleets, we bring expert diagnostics and repairs wherever you need them. Our team is known for honest service, deep mechanical knowledge, and fast turnaround times—all rooted in two decades of experience and a commitment to treating our customers like family.

At On Site Diesel Dr, we don’t just fix engines—we keep East Tennessee running strong.

Our
Services

  • Type of Services

    What we work on

    Excavators

    Bulldozers

    Backhoes

    Wheel Loaders

    Skid Steers

    Track Loaders

    Motor Graders

    Cranes (Hydraulic & Lattice Boom)

    Forklifts (Diesel-powered)

    Trenchers

    Scrapers

    Compactors & Rollers

    Articulated Dump Trucks

    Water Trucks

    Forestry Equipment (Feller Bunchers, Harvesters, etc.)

    Agricultural Machinery (Tractors, Combines, etc.)

    Semi Trucks & Trailers

    Lowboys and Heavy Haul Equipment

GET IN TOUCH

Our
Projects

Our
Team

  • Owner

    Cameron Boris

    Founder

What Our Clients Say

  • "Cameron was a lifesaver! My truck broke down, and he had me back on the road in record time. Fast, affordable, and professional—highly recommend!"

    Emmett

  • "I can't say enough good things about Cameron and his on-site diesel repair service. When my rig had an unexpected breakdown, he showed up quickly, diagnosed the issue in minutes, and had the repairs done at a price that didn’t break the bank. No hidden fees, no unnecessary upsells—just honest, reliable work at an unbeatable speed. If you need someone who’s efficient and trustworthy, Cameron is your guy!"

    Thomas

  • After dealing with overpriced repair shops and long wait times, finding Cameron’s mobile diesel repair was a game-changer. My truck broke down in the middle of a delivery route, and within no time, Cameron was on-site, ready to assess the problem. He knew exactly what to do, worked fast, and got me up and running without charging outrageous fees. What impressed me most was his transparency—he explained the issue, showed me the parts, and gave me a straightforward breakdown of costs before doing anything. No surprises, no extra charges—just honest, efficient service. It's rare to find someone who is both skilled and genuinely cares about keeping customers moving. I won’t go anywhere else for diesel repairs! Thanks, Cameron!"_ Would you like any adjustments to tone or style? Let me know!

    Keith