Hydraulic System Repair
Complete hydraulic services for dump trucks, trailers, and specialty equipment.
Hydraulic systems power essential functions on many commercial vehicles. We repair and maintain hydraulic pumps, cylinders, hoses, and valves. Whether you operate dump trucks, lift gates, or specialty hydraulic equipment, we keep your systems operating at peak performance.
Hydraulic systems are the muscle behind dump trucks, lift gates, refuse trucks, concrete mixers, and dozens of other commercial vehicle applications. When a hydraulic cylinder fails, a PTO will not engage, or a hose blows out under pressure, your truck is out of service and your job stops. Weldon's Truck & Trailer provides complete hydraulic system repair for commercial vehicles from our Kingman, AZ base, with mobile service across a 200-mile radius on I-40, US-93, and surrounding highways. Our ASE certified diesel mechanics diagnose and repair hydraulic pumps, cylinders, hoses, valves, and PTO systems on-site—whether you operate a dump body, lift gate, walking floor trailer, dump trailer, or specialty hydraulic equipment. We bring the tools, hydraulic fluid, and replacement components to your location to get your system operating again fast.
Detailed Hydraulic Repair Services
Our hydraulic services cover the complete range of commercial vehicle hydraulic systems. We diagnose and repair hydraulic pump and hydraulic motor failures including gear pumps, vane pumps, and piston pumps used in PTO (power take-off) driven applications. Our technicians perform hydraulic cylinder rebuilds—replacing rod seals, piston seals, O-rings, and seal kit components—to restore full lifting and dumping capacity. We fabricate hydraulic hoses on-site using professional-grade hose assembly and crimping equipment with proper hydraulic fittings and quick couplers, matching the exact hose specification and pressure rating required for your application. We service control valves, check valves, relief valves, and hydraulic filters, and use a hydraulic pressure gauge to verify system performance. For dump body applications including end dump, belly dump, and dump trailer configurations, we service the entire lift system including PTO engagement, pump drive, cylinders, and control valves. Lift gate repairs cover all major brands and styles. We also service refuse truck hydraulic systems, rolloff container mechanisms, concrete mixer drives, vacuum tanker pumps, and walking floor trailer hydraulics.
What's Included
Common Hydraulic Problems We Fix
The most frequent hydraulic failures we encounter include blown hydraulic hoses caused by age, abrasion, or pressure spikes—these often result in a sudden loss of fluid and complete system failure. Leaking hydraulic cylinders with worn seals cause slow operation and loss of holding capacity, especially critical on dump bodies that need to hold a raised position safely. PTO engagement failures prevent the hydraulic pump from operating at all, often caused by air system issues or PTO clutch wear. Contaminated hydraulic fluid from failed seals or water intrusion accelerates wear on every component in the system. We also commonly repair dump body pivot pin wear, lift gate platform damage, and refuse truck packer blade cylinder failures. Our technicians carry hydraulic fluid, common hose sizes, seal kits, and diagnostic equipment on every service call.
Why Choose Weldon's Truck & Trailer
Hydraulic system repair requires understanding the specific application—a dump truck lift system operates differently than a refuse truck packer or a lift gate. Weldon's technicians have hands-on experience with all types of commercial hydraulic equipment. We fabricate hoses on-site to the exact OEM specification, use quality hydraulic fluid, and test every repair under full operating pressure before releasing the truck. Our mobile service eliminates the need to tow your truck to a shop, saving you time and money.
Our Hydraulic Repair Process
- 1Call (334) 759-7020 and describe the hydraulic issue—leak, slow operation, no response, or PTO failure—along with the type of equipment and your location.
- 2A technician arrives with hose fabrication equipment, hydraulic fluid, seal kits, and diagnostic tools.
- 3We inspect the entire hydraulic system to identify the root cause, check fluid level and condition, and provide a detailed repair estimate.
- 4Repairs are completed on-site—hose fabrication, cylinder rebuild, pump repair, or valve replacement—and the system is bled and pressure-tested.
- 5A full operational test under load confirms the repair, and all work is documented for your maintenance records.
Service Area & Response Times
Our hydraulic repair service covers a 200-mile radius from Kingman, AZ. We carry hose fabrication equipment and hydraulic components on our service trucks and regularly perform on-site hydraulic repairs along I-40, US-93, I-15, and throughout Arizona, Nevada, and California.
"Joshua is amazing! Our RV broke down. He came out promptly and got us on the road again. He is extremely knowledgeable and helpful. A wonderful RV repairman!"