Mobile Fleet Maintenance
& Diagnostics

Expert service for Class 2-8 vehicles. We bring the shop to your yard in MA & NH to minimize your downtime.

Request Service Now
Cummins Detroit Diesel CAT Kenworth Peterbilt Freightliner International Thomas Built Buses Ford Chevrolet Dodge Isuzu Hino Bendix Wabco Meritor Maxon Waltco Thermo King Carrier

We Keep Your Fleet On The Road

Advanced Diagnostics

Proprietary tools for Engine, Transmission, and ABS. We don't guess; we find the fault code and fix it fast.

Preventative Maintenance

Scheduled PMs for all makes and models. Oil, filters, fluids, and comprehensive safety inspections.

Brakes & Air Systems

Expert repair of air brakes, compressors, dryers, and suspension systems. Bendix and Wabco certified.

Check Engine Light & Diagnostics

Our specialization is rapid and accurate mobile diagnostics. We utilize factory-level software for:

Major & Minor Repairs

From road calls to scheduled yard work, our technicians are equipped to handle:

The Dealership Alternative

Diesel On Demand bridges the gap between dealership-level capabilities and roadside convenience. We are a team of factory-trained technicians committed to keeping your fleet moving.

Our technicians bring years of dealership trench experience directly to your yard. We understand that time is money, and we have the certifications to back up our work.

Mechanic working on heavy duty engine

Engine & Aftertreatment

  • Cummins: ISX, X15, ISB/ISL Diagnostics.
  • Detroit Diesel: DD13, DD15, DD16.
  • Kenworth & Peterbilt: MX Engine Support.
  • Aftertreatment: DPF, SCR, & Regen Issues.

Transmissions

  • Allison: Automatic diagnostics & service.
  • Eaton: Automated Manual & Manual.
  • Proprietary: Detroit DT12 & Volvo I-Shift.
  • Clutch: Adjustments & diagnostics.

Chassis & Fleet

  • Bus: Thomas Built Buses.
  • Medium Duty: Ford, Chevy, Dodge, Hino, Isuzu.
  • Liftgates: Waltco & Maxon.
  • Body: Freightliner & International Controls.

Safety & Electrical

  • Bendix: Wingman Fusion & Air Disc Brakes.
  • Wabco: ABS & Stability Control Logic.
  • Meritor: Drivetrain & Braking Systems.
  • Electrical: Multiplex wiring & CAN Bus.

Refrigeration & APU

  • Thermo King: Reefer Unit Diagnostics.
  • Carrier: Transicold Systems.
  • Tri-Pac: APU Service & Repair.
  • Electrical: APU charging issues.

Get Service Now

Immediate assistance and scheduling.

(978) 201-9109

Service Email:
service@dieselondemand.net

Owner/Billing:
Nick Schreib
nick@dieselondemand.net

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