FP Smith Parts: Setting the Highest Standards for Rebuilding Heavy Equipment Components

Published: July 20, 2026  |  By FP Smith Parts & Equipment

Every rebuild receives new bearings, seals, gaskets and consumables — restored to factory standards or better at our Fairfield facility.

At FP Smith Parts & Equipment, we’ve been keeping heavy machinery running strong since 1947. As a family-owned business with deep roots in Northern California, we don’t just sell parts — we restore critical components to like-new (or better) condition through our dedicated in-house rebuild program. Our high standards for rebuilding engines, transmissions, torque converters, hydraulic pumps, valves, and more set us apart in an industry where shortcuts are common.

Why Rebuild Instead of Replace?

Heavy equipment represents a major investment. When a transmission fails in a Komatsu dozer, a Caterpillar loader needs hydraulic work, or an International Harvester tractor requires engine attention, full OEM replacement can be prohibitively expensive — especially for older or hard-to-find models. Professional rebuilding extends equipment life, reduces downtime, and delivers excellent value while preserving the original component’s fit and performance characteristics.

Our rebuild center at the 20-acre facility in Fairfield, CA, combines decades of hands-on experience with a massive physical inventory of OEM surplus and hard-to-find parts. This allows us to deliver reliable, warrantied solutions that keep your machines productive in construction, mining, agriculture, and beyond.

Our Rigorous Rebuild Process: Quality You Can Trust

Every rebuild at FP Smith follows strict protocols designed to exceed factory expectations:

• Complete Disassembly and Inspection: We thoroughly disassemble each component and inspect every part for wear, cracks, or hidden damage using proven diagnostic techniques.
• Replacement of All Consumables: All rebuilds receive brand-new bearings, seals, O-rings, gaskets, friction discs, and other wear items. This commitment eliminates common failure points and ensures long-term reliability.
• Restoration to Factory Standards (or Better): Leveraging our extensive knowledge, resources, and precision tooling, we restore original components to OEM specifications. Our technicians often achieve finishes and tolerances that look and perform better than factory originals.
• Testing and Validation: Every rebuilt component undergoes rigorous testing before leaving our shop. We verify pressures, leaks, tolerances, and operational performance to confirm it meets or exceeds original standards.

This process applies across a wide range of components for leading brands, including Komatsu, Dresser, Dressta, Caterpillar, International Harvester (IH), Case IH, Payhauler, Hough, John Deere, Allis-Chalmers, and more.

Expertise That’s Tough to Beat

Our technicians bring generations of specialized knowledge to every job. Many have decades of experience with legacy and current-model equipment, gained from factory closures, military surplus acquisitions, and real-world field repairs. This institutional expertise — built since our founder Francis Peter “Piggy” Smith transitioned from agriculture into heavy equipment parts — means we understand the nuances of different applications, operating environments, and failure modes.

We stand firmly behind our work with a robust warranty on all rebuilt components. Our confidence comes from the quality of materials, processes, and people involved.

Installation Guidance and Ongoing Support

A great rebuild is only as good as its proper installation. That’s why we provide clear, expert guidance to customers installing our rebuilt components. Whether you’re a fleet mechanic, independent shop, or owner-operator, we share torque specs, alignment procedures, break-in recommendations, and troubleshooting tips tailored to your equipment. This support minimizes installation errors and helps you get back to work faster.

Our team is available to answer questions before, during, and after installation — part of the comprehensive service that has earned the trust of customers across North America and around the world.

Benefits of Choosing FP Smith Rebuilds

• Cost Savings: Significant savings versus new OEM replacements without compromising performance.
• Faster Turnaround: In-house capabilities and stocked parts often mean quicker service than waiting for new factory units.
• Sustainability: Rebuilding reduces waste and extends the life of existing machinery — better for your budget and the environment.
• Reliability: New consumables + expert restoration = components that often outlast originals in demanding conditions.
• One-Stop Solution: Combine rebuilt components with our millions of stocked new, used, and surplus parts for complete repairs.

Real-World Results for Your Equipment

Whether you’re restoring a vintage IH tractor, maintaining a mining haul truck, or keeping a construction fleet operational, our rebuilds deliver peace of mind. Customers return to FP Smith because our work holds up under heavy use — backed by the same family legacy of honesty, expertise, and community trust that started over 79 years ago.

Provide your model, serial numbers, and component details, and we’ll guide you through the process — from inspection to installation support. At FP Smith Parts & Equipment, we don’t just rebuild components. We restore confidence in your machinery.