McCallon's Mobile Diesel Services

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McCallon's Mobile Diesel Services At McCallon’s Diesel Services, we take pride in keeping your trucks, trailers, and heavy equipment running at their best.

With years of hands-on experience and a commitment to quality, we specialize in reliable diesel repair, & maintenance.

I’ve got to say after being in this industry for over 25 yrs. The tools and the little sets you can pick up now days is ...
08/13/2026

I’ve got to say after being in this industry for over 25 yrs. The tools and the little sets you can pick up now days is awesome. has come a long way. I just furnished a new service truck with nothing but icon and I can say they have yet to disappoint. New addition to my personal tool collection

Coolant feed tubes on a freightliner are not fun and but we got it done and their truck is now rolling again
08/13/2026

Coolant feed tubes on a freightliner are not fun and but we got it done and their truck is now rolling again

Sunday Funday. New radiator and some front brakes
08/09/2026

Sunday Funday. New radiator and some front brakes

07/29/2026

Good evening facebook
We are expanding and looking for another diesel mechanic for a full time position pay will be based on experience. Please feel free to pass this on to anyone you may know looking thank you

Nick down at custom tints in wentzville hooked up the service truck with new decals and tint.
07/16/2026

Nick down at custom tints in wentzville hooked up the service truck with new decals and tint.

Customer said there truck ran funny and would just shut off randomly. Houston we found several problems. Some harness re...
05/05/2026

Customer said there truck ran funny and would just shut off randomly. Houston we found several problems. Some harness repairs and they are back on the road

Doing some late night maintenance to keep our customers trucks running during the day when they need to be on the road w...
04/30/2026

Doing some late night maintenance to keep our customers trucks running during the day when they need to be on the road we come to you at night and keep them maintained

🚛 Back on the Road Fast! 💨Got a call from a customer dealing with an air leak—but during our inspection, we found a slac...
04/05/2026

🚛 Back on the Road Fast! 💨

Got a call from a customer dealing with an air leak—but during our inspection, we found a slack adjuster hanging loose as well.

No problem for us 💪 We handled both repairs quickly and safely, and now that driver is back to moving freight without delay.

That’s what we do at McCallons Diesel Services—keeping you rolling when it matters most.

📞 314-400-1142
🌐 www.mccallondiesel.com

New service truck hitting the road soon. Knocking out some maintenance and having decals installed then you will see thi...
03/31/2026

New service truck hitting the road soon. Knocking out some maintenance and having decals installed then you will see this beauty running all over STL

We can not stress enough how important a pre purchase inspection is Some how a local dealership got this truck to pass i...
03/17/2026

We can not stress enough how important a pre purchase inspection is Some how a local dealership got this truck to pass inspection(lick and stick). If the customer wouldn’t have gotten the pre purchase inspection they would have ended up buying a truck with a rotten frame that’s not safe to be on the road.

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Saint Peters, MO
63376

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