Diesel Engine Repair for Trucks & Equipment

Accurate diagnostics and repair for diesel engines—on-site or in-shop.

We diagnose and repair diesel engines for trucks, trailers, and heavy equipment. Whether you're dealing with performance issues, fault codes, or major engine problems, our technicians identify the issue quickly and get you back up and running.

Diesel Diagnostics • Engine Repair • Reduce Downtime

Diesel Engine Diagnostics

We identify engine issues quickly using advanced diagnostic tools and experience.

Engine Repair & Service

From minor repairs to major engine work, we handle a wide range of diesel issues.

On-Site or In-Shop Service

We provide engine repair at your location or in our shop based on your needs.

Diesel Engine Services We Provide

We diagnose, service, and repair diesel engines across a wide range of trucks and equipment.

  • Fault code analysis and system testing

  • Starting and performance issues

  • Fuel system diagnostics and repair

  • Electrical and sensor issues

  • Cooling system service and repair

  • Turbocharger diagnostics and repair

  • Emissions and aftertreatment systems (DPF, EGR)

  • Engine repair and component replacement

How Diesel Engine Repair Works

We use proven diagnostic processes to identify engine issues and complete repairs efficiently.

STEP 1

Diagnostic Evaluation

We scan fault codes, test systems, and identify the root cause of the issue.

STEP 2

Repair Plan

We explain the issue and outline the required repair or service.

STEP 3

Repair & Test

We complete the repair and verify performance to ensure the issue is resolved.

Diesel Engine Repair Service Area

We provide diesel engine diagnostics and repair across the Miami Valley for trucks and heavy equipment.

Piqua, Troy, Tipp City, Vandalia, Englewood, Brookville, Trotwood, Dayton, Springfield, New Carlisle, Eaton

Also serving Richmond and surrounding areas in Eastern Indiana

Experienced Diesel Technicians for Engine Diagnostics & Repair.

We bring the tools, experience, and diagnostic capability needed to accurately identify and repair diesel engine issues.

  • ASE-certified diesel technicians

  • JPRO diagnostic capability

  • Advanced engine diagnostic tools

  • Experience with truck and equipment engines

  • Accurate fault code diagnosis

  • Fuel, air, and electrical system diagnostics

  • Turbo and aftertreatment system experience

  • Reliable repair to restore performance

Trusted by fleet operators and commercial customers across the region.

Roadside Truck Repair FAQs

Answers about diesel diagnostics, repair, and engine service.

What types of diesel engine repairs do you handle?

We handle diagnostics, engine repairs, in-frame rebuilds, component replacements, turbo issues, and full engine-related service for diesel trucks and equipment.

Do you offer on-site diesel engine diagnostics?

Yes. Our technicians use advanced diagnostic tools to identify engine issues on-site and determine the correct repair approach.

Can you perform engine rebuilds or replacements?

Yes. We perform in-frame engine rebuilds and engine swaps depending on the condition and requirements of the unit.

What are common signs of diesel engine problems?

Loss of power, excessive smoke, hard starting, overheating, and abnormal engine noise are common indicators that diagnostics are needed.

Do you service both individual trucks and fleets?

Yes. We work with owner-operators as well as fleet accounts for both repair and ongoing maintenance needs.

What if my engine issue requires extensive repair?

If the repair goes beyond what can be handled on-site, we will diagnose the issue, explain your options, and coordinate next steps for full repair.

Need Diesel Engine Repair? Schedule Service.

Get accurate diagnostics and repair for diesel engines on trucks and heavy equipment. Contact us to schedule service or speak with a technician.

Diesel Diagnostics • Engine Repair • Trusted Service

Herrmann’s Service Center provides reliable truck, trailer, and equipment repair backed by experienced technicians and a commitment to keeping your operation running. From roadside service to scheduled maintenance, we focus on minimizing downtime and delivering dependable service when it matters most.

© Herrmann's Service Center Inc.. 2026. All Rights Reserved.