If you’re dealing with hydraulic leaks, pressure loss, or slow lift times, contact H&H Diesel Service. We provide expert hydraulic repairs for trucks and equipment. We keep your systems strong, responsive, and leak-free.

Heavy-Duty Hydraulic Repair in Seguin, TX
Leaking hoses, slow cylinders, or weak hydraulic pressure are more than just annoyances—they can stop your truck or equipment cold. At H&H Diesel Service, we provide full-service hydraulic repair to restore power, safety, and performance.
Our hydraulic repair services include:
- Hydraulic hose replacement
- Cylinder repair and resealing
- Valve and control system diagnostics
- Hydraulic fluid flush and refill
- Pump and motor repair or replacement
- Pressure testing and leak detection
- Hydraulic line fabrication
- Preventive hydraulic system maintenance
Hydraulic systems power steering, lifts, cranes, suspensions, and more. When pressure drops or leaks appear, we’re here to diagnose and fix it—fast.
Experience the H&H Difference
Hydraulic System Specialists: From PTOs to steering and suspension hydraulics, our team is trained to repair high-pressure diesel systems with accuracy and care.
Fast Service You Can Count On: With 6 bays and 8 certified techs, we minimize downtime and complete hydraulic repairs quickly—without sacrificing quality.
Mobile Repairs: Can’t make it to the shop? We offer dependable roadside assistance and scheduled mobile repairs to a 25-mile radius of Seguin, TX.
Clear, Honest Communication: We show you what’s wrong, explain how we’ll fix it, and give you a fair quote—no surprises, no fluff.
Warranty-Backed Workmanship: Every hydraulic repair comes with a 30-day workmanship warranty. We also honor all manufacturer warranties on hoses, pumps, and parts.
Contact Us About Hydraulic Repair Now: Call 210-332-5821!
If you’ve got a hydraulic leak, system failure, or pressure loss, call H&H Diesel Service at 210-332-5821. Our hydraulic repair service gets your truck or equipment working like new—safely and reliably.
FAQs
What Areas Do You Serve For Heavy-Duty Hydraulic Repair?
We’re located at 7310 I-H 10 West, Seguin, TX 78155, near the I-10 intersection. We also proudly serve San Antonio, TX; Lockhart, TX; Luling, TX; New Braunfels, TX; San Marcos, TX; Cibolo, TX; Schertz, TX; Marion, TX; McQueeney, TX; Geronimo, TX; New Berlin, TX; Santa Clara, TX; and Lake Dunlap, TX.
What Are Signs of a Failing Hydraulic System?
Watch for fluid leaks, slow or jerky movement, weak power, whining noises, or warning lights. These symptoms mean something’s wrong—and early service can prevent major failure.
Can You Repair Hydraulic Cylinders?
Yes. We reseal, rebuild, and replace hydraulic cylinders for trucks and heavy equipment. Proper repair restores pressure and keeps your system working at full strength.
How Can I Get Hydraulic Repair?
Call 210-332-5821 today to book hydraulic repair with H&H Diesel Service. Our certified team will inspect your system, identify the issue, and get you back in action fast.
Diesel Repairs That Last
We service a wide range of diesel-powered vehicles and equipment—including heavy-duty trucks, medium-duty box trucks, buses, RVs, heavy equipment, and commercial fleets. Whether it’s a Class 8 semi-truck or a bulldozer, we’ve got the tools and expertise to get it done. Our team knows diesel systems inside and out and delivers quality repairs that last.
Testimonials
Here's What our customers are saying, feel free to leave us a review!
Jack Stoner