Hydraulic Systems
How to Tell If a Hydraulic Pump Is Bad
Learn how to tell if a hydraulic pump is bad with field-tested checks for noise, heat, contamination, and pressure. Save thousands on repairs and down...
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Featured · Hydraulic Systems
Construction equipment categories: A Field Engineer's Guide to Choosing the Right Iron
Construction equipment categories explained by a retired Cat field engineer — excavators, dozers, loaders, haul trucks, and how to pick the right machine.
Aug 09, 2026
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Hydraulic Systems
How to Increase Hydraulic Pressure in Heavy Equipment
How to increase hydraulic pressure in heavy equipment without replacing the pump. Ray Bowen's field-tested steps for fluid, filters, and relief valves...
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Can Hydraulic Pumps Be Rebuilt? What I Learned in 30 Years of Field Service
Can hydraulic pumps be rebuilt? Field engineer Ray Bowen explains when rebuilding saves money, the failure modes worth a rebuild, and repair costs vs ...
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Types of Hydraulic Fluids: What I Learned in 30 Years of Field Service
Types of hydraulic fluids can make or break a $500,000 machine. A retired Cat field engineer explains what to use, what to avoid, safely. Read this fi...
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Hydraulic Pump Seals: Field Guide to Keeping Your Machine's Heart Sealed
Hydraulic pump seals fail in predictable ways. A retired Cat engineer explains how to spot wear, choose replacement seals, and save big on your repair...
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Hydraulic Pump Repair Cost: What a Field Engineer Wants You to Know First
Hydraulic pump repair cost ranges from $350 to $6,500. See real price factors, labor rates, and why root cause matters before you approve any pump rep...
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