Orange County Fleet Services
Mobile 24/7 Truck & Equipment Repair, Fleet Maintenance & Repair and Construction Equipment Maintenance & Repair in Fullerton, CA and the Surrounding Areas

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Mobile 24/7 Truck & Equipment Repair

Roadside big rig, fleet and equipment service throughout Orange County.

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Fleet Maintenance & Repair

ASE Certified repair and service for all sizes of fleets from one to one hundred.

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Construction Equipment Maintenance & Repair

On-site or in-shop heavy equipment repair and maintenance services.

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Customer Reviews

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  • Mobile Truck Repair
  • Mobile Heavy Equipment Repair
  • 24/7 Fleet Services
  • 24/7 Roadside Assistance
  • Semi Truck Repair
  • Big Rig Maintenance
  • Construction Equipment Repair
  • Backhoe, Bulldozer & Forklift Repair
  • City & Public Works Vehicles
  • Fleet Vehicle Maintenance & Repair
  • RV & Motorhome Repair & Service
  • Gas & Diesel Engine Repair & Maintenance
  • Transmission Services
  • Brakes, Steering & Suspension
  • Interstate Battery Sales
  • Engine Computer Diagnostics
  • Truck Tire Sales and Services
  • Preventative Maintenance Services
  • On-Site Maintenance
  • BIT & DOT Inspections
  • 12 Month Nationwide Parts & Labor Warranty
  • Environmentally Friendly Practices

Locally owned and operated Orange County Fleet Services provides complete construction equipment repair, semi truck repair and 24/7 roadside assistance for fleets in Orange County and beyond. As part of the Fleet Services International, LTD (FSI) network, our local heavy duty equipment service and big rig repair shop in Fullerton is one of 250 nationwide service centers with mobile workstations powered by Richard Petty Garage. Whether you need maintenance for a bulldozer, excavator, forklift or other construction equipment, or need semi truck repair in Orange County, our ASE certified technicians are equipped with the skills and tools to care for your vehicles in-shop or on the road. We service all small, medium and large fleets, ranging from one to hundreds. This includes rental car fleets, government fleets, heavy equipment vehicles and tractor trailer fleets. To learn more about our bumper to bumper fleet vehicle services in Orange County, or to request 24/7 roadside semi truck repair in Fullerton or a neighboring community, don’t hesitate to give our nearby commercial vehicle shop a call.

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As an OC heavy equipment repair facility with a nationwide reach, the team at Orange County Fleet Services is proud to help national, regional and local owner/operators, fleet managers, government organizations and other businesses with their fleet vehicle maintenance needs. To provide the best possible truck and heavy equipment repair and maintenance services, we’ve invested in the latest diagnostic equipment, utilize fully equipped mobile workstations and maintain ASE certification, ensuring only expert hands work on your machines. From oil changes, DOT inspections and check engine light diagnostics, to big rig repair, diesel engine repair and on-site construction equipment repair, we do it all. Not only do we offer competitive pricing, fast turnaround times, and utilize environmentally friendly policies, but we back our services with a nationwide parts & labor warranty for all trucks, box vans, equipment, fleet cars and other commercial vehicles we service. Give OC Fleet Services a call at (949) 899-6802 to receive a quote for the cost of heavy equipment repair in Fullerton or to request immediate mobile fleet repair in Orange County and beyond.

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Orange County Fleet Services Blog

By Orange County Fleet Service June 18, 2026
Semi truck tire blowouts are among the most dangerous situations commercial drivers can face on the road. A sudden tire failure can make a vehicle difficult to control, increase the risk of accidents, and lead to costly downtime. Because commercial trucks travel long distances and carry heavy loads, their tires are subjected to significant stress every day. Understanding the most common causes of blowouts can help fleet operators and drivers reduce risks and improve safety. But if your semi truck does suffer a tire blowout, our team at Orange County Fleet Service can provide roadside help. Here are four common causes of semi truck tire blowouts. Improper Tire Inflation Incorrect tire pressure is one of the leading causes of tire failure. Underinflated tires generate excessive heat as they flex more than intended during operation. Overinflated tires, on the other hand, are more vulnerable to damage from road hazards. Regular tire pressure checks help ensure tires operate within the manufacturer's recommended range and reduce the likelihood of a blowout. Overloaded Trailers Exceeding a tire's weight capacity places tremendous stress on the tire structure. Overloaded trailers can cause tires to overheat, wear unevenly, and fail prematurely. Proper load distribution and adherence to weight limits are essential for protecting tires. Road Hazards and Debris Sharp objects, potholes, curbs, and road debris can damage a tire's sidewall or tread. In some cases, the damage may not be immediately visible but can weaken the tire over time. Eventually, the compromised area may fail while the truck is traveling at highway speeds. It’s important for drivers to remain alert and avoid road hazards whenever possible. Worn or Damaged Tires Tires naturally wear down with use, and excessive tread wear reduces their ability to withstand the demands of commercial driving. Cracks, cuts, and bulges are signs that a tire may be nearing failure. Routine inspections help identify damaged tires before they become increasingly serious safety risks. 24/7 Roadside Semi Truck Tire Services in Orange County, CA For expert semi truck tire services in Fullerton, CA and the surrounding area, contact Orange County Fleet Service at  (949) 899-6802  . With our mobile service, we can come to you to handle your semi truck tire needs in greater Fullerton, CA!
By Orange County Fleet Service June 18, 2026
Semi truck tire blowouts are among the most dangerous situations commercial drivers can face on the road. A sudden tire failure can make a vehicle difficult to control, increase the risk of accidents, and lead to costly downtime. Because commercial trucks travel long distances and carry heavy loads, their tires are subjected to significant stress every day. Understanding the most common causes of blowouts can help fleet operators and drivers reduce risks and improve safety. But if your semi truck does suffer a tire blowout, our team at Orange County Fleet Service can provide roadside help. Here are four common causes of semi truck tire blowouts. Improper Tire Inflation Incorrect tire pressure is one of the leading causes of tire failure. Underinflated tires generate excessive heat as they flex more than intended during operation. Overinflated tires, on the other hand, are more vulnerable to damage from road hazards. Regular tire pressure checks help ensure tires operate within the manufacturer's recommended range and reduce the likelihood of a blowout. Overloaded Trailers Exceeding a tire's weight capacity places tremendous stress on the tire structure. Overloaded trailers can cause tires to overheat, wear unevenly, and fail prematurely. Proper load distribution and adherence to weight limits are essential for protecting tires. Road Hazards and Debris Sharp objects, potholes, curbs, and road debris can damage a tire's sidewall or tread. In some cases, the damage may not be immediately visible but can weaken the tire over time. Eventually, the compromised area may fail while the truck is traveling at highway speeds. It’s important for drivers to remain alert and avoid road hazards whenever possible. Worn or Damaged Tires Tires naturally wear down with use, and excessive tread wear reduces their ability to withstand the demands of commercial driving. Cracks, cuts, and bulges are signs that a tire may be nearing failure. Routine inspections help identify damaged tires before they become increasingly serious safety risks. 24/7 Roadside Semi Truck Tire Services in Orange County, CA For expert semi truck tire services in Fullerton, CA and the surrounding area, contact Orange County Fleet Service at  (949) 899-6802  . With our mobile service, we can come to you to handle your semi truck tire needs in greater Fullerton, CA!
By Orange County Fleet Services May 25, 2026
A semi truck’s fuel system is essential for delivering the power and efficiency needed to haul heavy loads over long distances. When something goes wrong, it can lead to poor performance and even costly downtime. Because these systems are more complex than those in standard vehicles, many drivers and fleet owners have questions about how they work and when repairs are needed. At Orange County Fleet Services, we’re happy to answer your questions about semi truck fuel system repair in the greater Fullerton area. What Does the Fuel System Do? The fuel system is responsible for storing, filtering, and delivering fuel to the engine in the correct amount and at the proper pressure. Key components include the fuel tank, fuel pump, fuel injectors, and fuel filters. In modern diesel engines, the system must precisely control fuel delivery to ensure efficient combustion, optimal power output, and reduced emissions. What Are Common Symptoms of Fuel System Problems? There are several warning signs that may indicate a fuel system issue. These include difficulty starting the engine, loss of power, poor fuel-efficiency, and rough idling. You might also notice unusual noises or fuel leaks. If any of these symptoms appear, it’s important to have the system inspected promptly to avoid further damage. How Can I Help Keep My Truck’s Fuel System Healthy? Regular maintenance is key to keeping a semi truck’s fuel system in good condition. Fuel filters should typically be replaced according to the manufacturer’s recommendations. Routine inspections can help identify worn or failing components before they cause major issues. Staying on top of maintenance helps improve reliability and extend the life of the system. Why Is Professional Repair Important? Semi truck fuel systems operate under high pressure and require specialized knowledge and equipment to diagnose and repair properly. Attempting to fix issues without the right expertise can lead to further damage or even safety risks. Professional technicians have the tools and training needed to accurately identify problems, perform precise repairs, and ensure the system is functioning efficiently. Where Can I Get Semi Truck Fuel System Repair in Fullerton, CA? For expert semi truck fuel system repair in Fullerton, CA and the surrounding area, contact Orange County Fleet Services at  (949) 899-6802  . Our local semi truck mechanics can thoroughly address your big rig repair and maintenance needs!
By Orange County Fleet Services April 20, 2026
At Orange County Fleet Services, we strive to earn our clients’ complete satisfaction by providing expert fleet vehicle repair and maintenance at fair rates. From semi trucks to delivery vans to construction equipment, we can return your vehicles to reliable condition. Our team offers both roadside and in-shop fleet vehicle repairs in greater Fullerton. And we appreciate it when our clients offer feedback about their experiences with us. Here’s a look at some of our recent reviews. “Great service. Your go-to in the Orange County area for your truck issues.” —Darren E. “Fixed some show production trailers while we were in the middle of an event, so that we could save time on move out. Excellent service, fair price, amazing response time. We weren’t sure anyone would even be able to help us “on site”! Thanks!!” —Team Ski Dazzle “AC went out in Nevada, made it delivery in LA driving mostly at night. Company found OC Fleet Services and was assured they’ll solve the problem. They fixed it and it could’ve taken days waiting for a part but, they found a way to get me back on the road. Great service.” —Charles S. “The guys were fast and friendly, got us back on the road ASAP.” —Garth G. “Took my school bus to OCFS for maintenance and repairs and everything was taken care of in a timely manner. Darrin was knowledgeable and helped me make the decisions needed to keep my family safe on the road. The price was very reasonable. And I am now ready and confident to take my children across the country. Thank you, Darrin et al. See you next time!” —Sophia L. “Came into OCFS with a derate on my truck. Friendly, professional, timely service. Very fair pricing on top. Can’t ask for much more than they did. Time is money and I was only down for an afternoon thanks to them. Will bring my equipment back anytime. Highly recommend.” —Aaron B. Fleet Vehicle Repair and Maintenance in Orange County, CA When you need fleet vehicle repair and maintenance in Fullerton and the surrounding area, contact Orange County Fleet Services at  (949) 899-6802  . Feel free to give us a call to m ake an appointment for fleet vehicle service in greater Fullerton, CA !
A large semi-truck drives down a road at twilight with mountains in the background, viewed from inside another vehicle.
By Orange County Fleet Services March 17, 2026
Get expert big rig suspension repair to ensure safety & performance. Contact us for mobile services in Fullerton, CA!
A dark blue semi-truck with a large trailer driving on an open road beside green bushes under a clear blue sky.
By Orange County Fleet Services February 20, 2026
Get answers to FAQs about big rig cooling system repair. Learn signs of issues & maintenance tips. Contact us for 24/7 truck repair!
Close-up of truck wheels, revealing tires and shiny rims. The truck is gray, parked on a cobblestone street.
By Orange County Fleet Service January 22, 2026
Learn 5 tips to prevent big rig tire blowouts, including maintenance & safe driving. Contact us for expert roadside assistance!
Semi-trucks with open hoods parked outside on a sunny day. White and red trucks are visible.
By Orange County Fleet Services December 16, 2025
Learn 4 reasons to keep your semi truck's oil change schedule. Ensure engine health & reduce repair costs with our expert maintenance.
Blue semi-truck driving on a road with green bushes and blue sky.
By OC Fleet Services November 20, 2025
Learn essential tips for maintaining your semi truck’s engine. Contact OC Fleet Services for expert fleet maintenance in Orange County.
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By OC Fleet Services October 23, 2025
Regular fleet vehicle maintenance is vital for safety & efficiency. Contact us for expert services to reduce risks & extend vehicle lifespan.
A white Amazon semi-truck with a raised hood and a repair truck parked on the side of a road.
By OC Fleet Services September 20, 2025
Learn common causes of semi truck overheating. Contact OC Fleet Services for 24/7 mobile repair in Fullerton, CA.