
Hydraulic failure can stall your operations fast. Iron Buffalo delivers expert hydraulic repair for heavy-duty trucks and equipment—on-site or in-shop—to restore power, pressure, and performance.
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Hydraulic Repair in Denver, CO, and Kalispell, MT
From dump trucks to boom lifts and cranes, we service complex hydraulic systems used in construction, utility, and fleet operations. Whether you’re seeing fluid leaks, low pressure, or slow lift response, our technicians quickly diagnose the issue and restore full hydraulic function. We handle hydraulic failures from the ground up—with a focus on long-term durability and operational safety.
Complete Hydraulic Repair Services
Our experienced team repairs and maintains all major components of truck and equipment hydraulic systems. Services include:
- Hydraulic cylinder rebuilds and seal replacement
- Hose, fitting, and coupling replacement
- Pump, PTO, and motor diagnostics
- Valve body troubleshooting and repair
- Reservoir flushing and filter replacement
- Hydraulic fluid leak detection
- System pressure testing and calibration
- Lift system diagnostics and repair
- Mobile hydraulic service at your location
- Preventive maintenance for high-use systems
We use OEM-grade components and precise testing tools to ensure system performance under load.
What Makes Us Different
We work with complex lift systems, utility bodies, cranes, roll-offs, and vocational truck platforms. Whether you're managing a single vehicle or an entire fleet, we deliver expert repairs backed by real-world heavy-duty experience. With mobile service available and fully equipped shops in both Denver and Kalispell, Iron Buffalo is ready to respond when and where your hydraulics need help.
Need Truck Hydraulic Repair Service?
If your truck’s hydraulic system is leaking, lagging, or failing under pressure, call Iron Buffalo at 303-623-7049 (Denver) or 406-890-7001 (Kalispell). We’ll restore performance and keep your equipment working hard.
FAQs
What Areas Do You Serve?
We offer 24/7 mobile repairs and roadside assistance in the following areas:
Colorado: Boulder, CO; Aurora, CO; Centennial, CO; Fort Collins, CO; Greeley, CO; Georgetown, CO; Brighton, CO; Castle Rock, CO; Colorado Springs, CO; and Longmont, CO.
Montana: Whitefish, MT; Bigfork, MT; Somers, MT; Polebridge, MT; Thompson Falls, MT; Polson, MT; Rollins, MT; Libby, MT; and Eureka, MT.
What Are Common Hydraulic Repair Issues?
Typical problems include worn seals, cracked hoses, failed pumps, low system pressure, and fluid contamination. Each can result in loss of lift or slow system response.
Can You Perform Hydraulic Repairs On-Site?
Yes. Our mobile units are equipped to diagnose and repair hydraulic systems in the field, minimizing downtime and eliminating the need for towing.
How Can I Get in Touch?
If you're ready to schedule diesel repairs, call Iron Buffalo today at 303-623-7049 (Denver) or 406-890-7001 (Kalispell). Our team will keep your diesel truck running strong.

In-House Diesel Mechanic Repairs
Workmanship & customer service are the cornerstones of our truck repair services. We proudly provide top-rated heavy-duty truck repair & maintenance services from our team of trusted diesel mechanics at Iron Buffalo Truck & Trailer in Denver, CO & Kalispell, MT. From brake and axle repairs, to transmissions and diesel engines, Iron Buffalo will get your commercial truck fixed and running smoothly again. Get in touch with us today to schedule a diesel mechanic repair service at one of our truck repair shop locations.
Customer testimonials

Light, Medium & Heavy-Duty Truck Repair Services in Denver, CO & Kalispell, MT
Trusted Diesel Repair & Fleet Services - Keeping You on the Road & Job Site
Commerce City, CO
5590 E 55th St, Commerce, City, CO
Kalispel, MT
104 Rocky Cliff Lane, Unit 1, Kalispell, MT