Moving a broken-down semi or a piece of equipment is expensive and slow, and some machines cannot travel on the road at all. A mobile heavy-duty mechanic brings a service truck to the machine. Trackara passes your request to independent mobile mechanics near you who list semis and heavy equipment among the vehicles they take. Heavy-duty work is broad, and not every mechanic handles every make or type of machine, so the details in your request matter. You get a quote before work starts and pay the mechanic directly.
Updated September 25, 2026Written by the Trackara team
Quick answer
Often, yes. Many mobile heavy-duty mechanics repair semi trucks and equipment at yards, job sites and farms, handling diagnostics, air brakes, electrical, batteries and many hydraulic and maintenance jobs. What each mechanic can take on varies a lot by their tools and experience, so give as much detail as you can when you request.
What mobile heavy-duty mechanics commonly handle
Service trucks carry a lot: compressors, heavy jacks, big wrenches, diagnostic software and common parts. That covers a wide range of repairs on site.
Heavy equipment is where specialties really differ. One mechanic may focus on trucks and trailers, another on construction or farm machines, and another on a certain make. Name the equipment type, make and model in your request.
Engine diagnostics and warning lights
Air brake adjustment and repair
No-starts, batteries and charging systems
Lighting and wiring problems
Hydraulic hoses and leaks on equipment
Preventive maintenance and fluid service
Tires and wheel-end work (varies by mechanic)
Where the work can happen
Truck yards, terminals, job sites, farms, quarries and customer lots are all typical. The mechanic needs to get the service truck close enough to work and needs firm ground under any jack or stand.
If the site has safety rules, gate access or check-in steps, include them in your request. Let the mechanic know if the machine is somewhere tight, on a slope or in mud.
Work that may need a shop
Engine and transmission overhauls, major frame repair and some jobs that need a large crane or specialized dealer software may be better in a shop. Some mobile mechanics handle bigger jobs in the field and some do not.
A field diagnosis still helps. It tells you whether the machine can be fixed where it is or needs to be hauled, and to where.
Safety before the mechanic arrives
Lower any raised attachments, set the parking brake, chock the wheels and shut the machine down. Do not crawl under a truck or machine held up only by hydraulics or a jack. If there is a fuel or hydraulic leak near a hot engine, keep people clear and do not run it.
Note the equipment type, make, model and serial number or VIN
Write down any fault codes shown on the dash or display
Lower attachments, set the brake and chock the wheels
Share site access details: gate codes, check-in and safety rules
Describe the ground and the space around the machine
Have maintenance records available if you keep them
Questions and answers
Some mobile heavy-duty mechanics do roadside calls, but safety comes first. The truck needs to be clear of traffic, and some locations are not safe to work in. Describe where the truck is and the mechanic can tell you if they can work there.
Many do, but specialties vary widely. Some focus on trucks, some on construction machines and some on farm equipment. Mechanics list what they take, so name the machine type, make and model in your request.
Most mobile heavy-duty mechanics carry diagnostic software for common engines and systems. Some makes need dealer-level software for certain jobs. Include the make, model and year so the right mechanic responds.
If no mechanic nearby can take your request, Trackara tells you by email. Sending the request is free, so there is nothing lost by asking.
Before a mechanic receives requests, Trackara checks that they gave us current liability insurance and the credentials they list. That check is not a guarantee of their work. You can read more on our trust page.