Onsite Diesel Heavy Equipment Repair

05/28/2026

A major component is out, and the repair is underway!💪⚙️

Here, our team is servicing a large haul truck in our shop removing and rebuilding critical components to restore performance and reliability. Jobs like this require the right equipment, experienced technicians, and a shop built to handle heavy machinery.

From diagnostics and teardown to rebuilds and reinstallation, OnSite Diesel delivers full-service heavy equipment repair designed to keep your operation moving.

05/22/2026

🇺🇸 MEMORIAL DAY GIVEAWAY 🇺🇸

We’re kicking off Memorial Day weekend with a giveaway! 🔥

We’ll have TWO winners taking home some awesome Onsite Diesel merch including hats, tumblers, RTIC gear, and more! 😎👏🏼

To enter:
⭐️ Like this post
⭐️ Share this post

Bonus entry: Comment your Memorial Day weekend plans below! ☀️🇺🇸

Winners will be announced on Tuesday 5/26!

We’re thankful for all who have served and sacrificed for our freedom. ❤️🤍💙

05/20/2026

When the job keeps going after dark, so do we. This overnight engine removal is just one example of how Onsite Diesel supports heavy equipment operations around the clock.

With 24/7 field service and fully equipped service trucks within 250 Miles of Houston and San Antonio, Texas. OnSite Diesel is ready to respond whenever and wherever you need us. Day shift or night shift, we’re committed to minimizing downtime and keeping your equipment moving.

Need support when it matters most? visit: onsitediesel.com

05/12/2026

Why do fleet managers trust OnSite Diesel?💪

Because we do it right the first time. We service all major brands, including CAT, with fully equipped trucks and expert technicians ready for emergency field support.

Tough environments demand mechanics who stay focused on safety and uptime. Based in Willis, TX, we operate across Texas within a 250-mile radius of Houston and we’ve extended our service coverage within 250 miles of San Antonio.

Let’s get to work.

05/07/2026

Not every repair happens in the field, and not every repair can wait.

That’s why we offer both. OnSite Diesel supports pipeline, mining, construction, quarry, and landfill operations with responsive field service and full-service shop capabilities. From fast on-site repairs to complex in-shop work, we deliver solutions that keep equipment running and operations on track.

Reliable support for industries that demand it most.

04/29/2026

In the middle of a major engine repair this machine is getting the attention it needs to get back to work.

Our technicians are deep into a teardown, inspecting components, replacing worn parts, and making the necessary repairs to restore performance and reliability. Work like this takes the right tools, the right environment, and the right experience.

04/24/2026

We’re expanding into South Texas!

OnSite Diesel is now supporting jobsites across the San Antonio and Austin region, with experienced technicians already working in the field and fully equipped service trucks ready to respond.

From mobile diagnostics and diesel engine repair to hydraulic service, welding, and precision line boring, our team is built to handle the work that keeps your equipment running.

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Coming Soon: New Braunfels, TX Expansion Covering the San Antonio and Austin markets! With our expert technicians and fully equipped trucks, we’re readily available to keep your operations running smoothly and efficiently.Contact us today at 830-445-4015 to schedule service or learn more about our...

04/22/2026

More than just trucks. this is a fully equipped mobile repair fleet.⚙️

Each unit is built to support your equipment in the field, delivering diagnostics, repairs, and maintenance right where the work happens. From emergency breakdowns to preventative service, Onsite Diesel provides reliable solutions that minimize downtime and maximize performance.

Dependable service you can count on, every time.

04/15/2026

We’re expanding into South Texas!

OnSite Diesel is now supporting jobsites across the San Antonio and Austin region, with experienced technicians already working in the field and fully equipped service trucks ready to respond.

From mobile diagnostics and diesel engine repair to hydraulic service, welding, and precision line boring, our team is built to handle the work that keeps your equipment running.

OnSite Diesel provides 24/7 heavy equipment repair, field service, shop repairs, welding, and line boring for contractors and fleets across the Houston area.

04/14/2026

Major component work, handled right on-site.

When the final drive failed on this D8T dozer, our team removed the component using our crane-equipped service truck and transported it back to our shop for a full rebuild. Once complete, we returned to reinstall it and get the machine back to work.

That’s real field service in action.