Diesel Engine, Medium & Heavy-Duty Trucks, Off-Road Heavy Equipment Repairs

At O.S. Smith Service, we can get your Semi-truck back on the road quickly. We provides all of the quality service, repairs and parts you need for your diesel truck or off-road Heavy Equipment. Bring in your trucks to our shop in Jacksonville, Florida


Locally family owned and operated for over 30 years, we been providing reliable on-site service and repairs. 24 Hour emergency mobile repair shop, staffed with experienced technicians.


Whether you call it a semi-truck or tractor trailer, we service and repair them all the same.  On-site, mobile repair has been a part of our business for over 30 years so you can be sure we know what we’re talking about with it comes to semi’s and trailer repairs.


We have 24 Hour Emergency Mobile Road Service, Service In All of North Florida. I-10, I-95, I-295


Our mechanics are standing by to help you, all hours of the day or night. Whether you need work on your fifth wheel, suspension or your trailer’s swing door needs repairing, we are standing by to get you up and running.  One call and our technicians will be on our way in our mobile service truck to fix your problems. Our mobile truck is equipped with quality tools, parts and equipment to assess and fix all repairs on tractor trailers.  We carry everything we need, so we can fix your problem and have you back out on the road sooner than the other guy. Time is money, right?


All repairs done on-site or in our shop yard in Jacksonville, Florida