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At Our Locations, Onsite, and Across the Globe

Stewart & Stevenson’s aftermarket support includes equipment service and maintenance, emergency repairs, equipment overhaul and refurbishment, parts, and training. We have the expertise and tools to diagnose equipment issues and quickly organize solutions to maximize uptime and eliminate downtime.

Our technicians, readily available with fully equipped and stocked service vehicles, can travel domestically or internationally to provide onsite service wherever your equipment is located. We are available 24/7/365 to support our worldwide base of installed equipment, including:

  • Oilfield fracturing, chemical additive, hydration, acidizing, coiled tubing, cementing, nitrogen, fluid pumping, data acquisition and control systems
  • Prime and standby power generation packages built for oilfield, marine, business and industry
  • Rail King® rail car movers
  • Products of Allison, Detroit, DEUTZ, MTU, and Volvo Penta Marine/Industrial/Off-Road
  • Rental generators and compressors

Preventative and Long-Term Maintenance

We have comprehensive maintenance programs for a full range of products, including long-term maintenance contracts for equipment in remote locations. These important programs help extend the life of your valuable equipment and minimize the cost of unexpected equipment failures. We look forward to custom-building a program specifically for you.


Our comprehensive maintenance programs are designed to maintain the warranty status of all equipment and components as required by the manufacturer. With all warranty service and repairs, our technicians provide the standardized record keeping necessary for warranty purposes.

Equipment Commissioning

Our certified technicians and trainers will travel to where your equipment is put into service in order to personally commission it prior to operation. We will ensure your equipment is properly installed, fully serviced and fully operational, and that your personnel are completely trained.

Commissioning service can include:

  • Equipment Installation Oversight
  • Initial Service
  • Inspection and Testing
  • Operator Training

Refurbishing and Retrofitting

We can retrofit and rebuild engines, transmissions, generators, and all components of individual equipment. We manufacture one-off specialized components to meet changing state and federal regulations. Our service locations feature chassis and engine dynamometers and have the capability to overhaul engines and transmissions.

Equipment refurbishments range from a simple cleaning, repair, and new paint jobs to complete rebuilds. We have the mechanical, electrical, structural, and body repair expertise needed to accomplish refurbishments quickly and cost effectively.

Oilfield refurbishment services include complete structural repair, low emission engine and exhaust after-treatment equipment, advanced electronics with Stewart & Stevenson data acquisition systems, paint and bodywork.