Cool autumn winds arrive with growing temperature differences between day and night and gradually declining air humidity. Such environmental changes bring new challenges to the stable operation of hydraulic systems. As the power source of construction machinery, the precise functioning of hydraulic cylinders directly affects working efficiency and operational safety. To keep hydraulic systems running smoothly, follow this hydraulic maintenance session and learn practical component maintenance know-how!
Prioritize Cleaning: Eliminate Hidden Hazards & Prevent Corrosion
English Body: Autumn brings more wind-blown sand and fallen leaves, making dust and impurities prone to stick on cylinder surfaces. Left uncleaned, contaminants may enter the hydraulic system with piston movement, causing sealing part abrasion or oil circuit blockage.
Tips：
- After daily operation, wipe exposed cylinder parts with clean soft cloth, focusing on dirt and water stains on piston rod surfaces.
- Inspect dust seals regularly for intactness; replace damaged ones promptly to stop particle intrusion.
- Do not clean directly with chemical solvents to avoid corrosion of surface paint coating.
Seal Inspection: Details Determine Service Life
English Body: Seals serve as the “lifeline” of hydraulic cylinders. Wide temperature swings in autumn easily harden or shrink rubber components, leading to oil leakage risks.
Tips：
- Check for oil seepage around the cylinder piston rod; disassemble to inspect sealing rings once leakage occurs.
- Focus on elasticity inspection of O-rings, Y-rings and dust seals; replace cracked or deformed parts in a timely manner.
- When replacing seals, ensure correct model matching and apply proper amount of hydraulic oil for lubrication to prevent installation damage.
English Body: Sharp day-night temperature gaps in autumn demand preheating before cylinder startup under low ambient temperature, to avoid concentrated internal stress caused by high-load operation of cold equipment.
Tips：
- At temperatures below 5°C, run the machine at low speed with no load for 5~10 minutes after startup; resume normal operation only after oil temperature rises above 20°C.
- Avoid prolonged overloaded operation to prevent abrupt internal pressure rise that causes seal failure or cylinder barrel deformation.
- Retract piston rods fully into cylinder barrels during shutdown to lower corrosion risk on exposed sections.
