Heavy Equipment & Diesel Repair Services

From routine maintenance to major repairs, Zimmerman & Sons provides dependable repair services for heavy equipment, diesel trucks, farm equipment, and more.

Heavy Equipment Repair

A yellow excavator with a black cab digging into dirt on a construction site, with a truck in the background and cloudy sky overhead.

Whether you're dealing with hydraulic issues, engine problems, electrical faults, or undercarriage wear, we have the experience to get your equipment back to work.

We Service:

  • Excavators

  • Dozers

  • Loaders

  • Skid Steers

  • Backhoes

  • Compact Equipment

  • Farm Equipment

Diesel Truck Repair

White dump truck with black bed parked on gravel lot under cloudy sky, multiple other vehicles in background.

Our diesel repair services help keep your trucks running efficiently and minimize costly downtime.

Services Include:

  • Diagnostics

  • Engine Repairs

  • Fuel System Repairs

  • Cooling Systems

  • Brake Repairs

  • Electrical Troubleshooting

Field Service

A man working on a green tractor in a field, with a service truck parked nearby. The sky is partly cloudy and the ground is dry with some sparse vegetation.

When equipment breaks down on the jobsite, transporting it isn't always practical.

Our field service helps get you back up and running quickly without the expense and delay of hauling equipment.

Common Field Service Calls:

  • No Starts

  • Hydraulic Issues

  • Electrical Problems

  • Engine Diagnostics

  • Emergency Repairs

Preventative Maintenance

A male mechanic wearing safety glasses and a black cap working on a large truck engine in a repair shop.

Regular maintenance is one of the best ways to reduce breakdowns and extend equipment life.

Maintenance Services:

  • Oil Changes

  • Filters

  • Fluid Inspections

  • Belt Replacement

  • Greasing

  • Scheduled Service Programs

DEF System Diagnosis and Repair

DEF system for a Peterbuilt Truck on a shop floor

Modern diesel engines rely on Diesel Exhaust Fluid (DEF) systems to reduce emissions and keep your truck operating efficiently. When DEF components fail, they can trigger warning lights, reduced engine power, derates, and costly downtime.

Zimmerman & Sons provides professional diagnosis and repair of DEF and emissions-related systems, including sensors, DEF pumps, injectors, heaters, tanks, and related components. Our technicians use proven troubleshooting methods to identify the root cause of the problem and get your equipment back to work as quickly as possible.

Whether you're dealing with fault codes, DEF quality issues, derate conditions, or emission system failures, we have the experience to diagnose and repair the problem correctly.

Hydraulic System Repair

Close-up of the front arm and bucket of a yellow excavator with signs of rust and use, on a construction site with snow.

Hydraulic failures can bring production to a halt. We diagnose and repair leaks, weak performance, damaged hoses, cylinders, pumps, and valves.

Equipment Down?

Don't let repairs slow your operation down.

📞 Call Zimmerman & Sons Today

(724) 541-6810

Emergency Field Service Available

CALL NOW