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Mobile Diesel USA
Services
Phoenix dispatch, 7 AM to 7 PM Arizona time

Off-highway diesel repair

Heavy equipment and off-highway diesel repair dispatched to your job site. Excavators, loaders, generators — we come to the iron.

Get help nowCall (602) 456-9071

How it works

Describe the equipmentTell us the make, model, and year of the equipment, what's wrong, and the job site location. Access instructions help.
Mechanic dispatchedWe send a heavy equipment specialist to your job site with the right tools and diagnostic equipment.
Diagnose and quoteYour mechanic inspects the machine, diagnoses the issue, and provides a quote before beginning repair work.
Back in operationRepair is completed on-site and the equipment is tested under operating conditions before sign-off.

Your equipment can't drive to a shop. We drive to it.

Off-highway diesel equipment sits where it works — on construction sites, in quarries, at remote locations. When a dozer, excavator, or generator goes down, our mechanics come to the machine with the tools and expertise to get it running again.

  • Engine repair

    Diesel engine diagnostics and repair for excavators, loaders, dozers, cranes, and other heavy equipment — Tier 4 emissions systems included.

  • Hydraulic systems

    Hydraulic pump, cylinder, hose, and valve repair for all types of hydraulic-driven equipment. On-site hose fabrication available.

  • Electrical and starting

    Battery service, starter and alternator repair, wiring harness troubleshooting, and control system diagnostics for heavy equipment.

  • Undercarriage and tracks

    Track adjustment, roller replacement, sprocket service, and undercarriage inspection for crawler-type equipment.

  • Generator and power units

    Diesel generator diagnostics, repair, and maintenance — from portable job site generators to large standby power units.

  • Preventive maintenance

    Scheduled PM service at your job site — oil changes, filters, fluid analysis, and inspection to prevent unplanned downtime.

Questions

No estimates. The mechanic diagnoses, quotes, and you approve before any work.

Mechanics work on brands including Caterpillar, John Deere, Komatsu, Volvo, Hitachi, Case, Kubota, and Bobcat. We also service diesel generators from Caterpillar, Cummins, Kohler, and Generac.

Usually, within the Phoenix metro. Mechanics work at construction sites, quarries, farms and yards. Tell dispatch about gates, escorts or other access rules when you send your request.

Yes. Tier 4 Final emissions systems (DPF, DEF, SCR) on off-highway equipment use similar technology to on-highway trucks. Our mechanics diagnose and repair Tier 4 aftertreatment systems in the field.

Ask dispatch. In the Phoenix metro you can schedule preventive maintenance visits at your job site: oil changes, filters, inspections and fluid analysis. Each visit is quoted and approved like any other job.

In the app or on your secure status page, by card, after you approve the price. Nobody should ask you for cash at the truck.

The Phoenix, Arizona metro, 7 AM to 7 PM Arizona time, every day. Chicago and Detroit are launching next and are not available yet. If anyone is in danger, call 911.

Need this fixed in Phoenix?

Tell dispatch where the truck is and what it's doing. If anyone is in danger, call 911.

Get help nowCall (602) 456-9071