03/22/2026
We are often asked why we clean cylinders before we start repairing and below we have listed and explained why.
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Cleaning a hydraulic cylinder during repair is critical to prevent catastrophic system contamination. Contaminants like dirt, metal shavings, or moisture entering the system can cause seal failures, score cylinder bores, and damage expensive pumps or valves, leading to decreased efficiency (up to 20% loss) and reduced service life.
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Key Reasons to Clean a Hydraulic Cylinder During Repair:
⭐Prevent System Failure: Hydraulic systems require high cleanliness standards (often ISO 17/15/13). Dirt or debris introduced during disassembly can act as an abrasive, damaging components throughout the entire hydraulic circuit.
⭐Prevent Internal Damage: Contaminants can damage piston seals and score the inner barrel, causing internal leaks that reduce efficiency and produce more contaminants.
⭐Ensure Proper Seal Performance: Cleaning the gland nut and piston grooves is essential for new seals to seat correctly. If residues are left, they can damage new seals upon installation.
⭐Early Problem Detection: A clean cylinder allows for accurate inspection of, and identification of,, cracks, dents, or wear on the rod and barrel, preventing premature failure of repaired parts.
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These are just a few reasons why we clean hydraulic cylinders before the repair process. In doing so your cylinder will continue to work for you for many more hours to come
