How to maintain the hydraulic system of underground loader

2025-11-04 17:21:57

       Maintenance of hydraulic system for Underground loader Maintaining the hydraulic system of underground loaders is crucial for ensuring efficient operation and extending the service life of the equipment. Here are some key maintenance steps and suggestions:
       1. Regular inspection
       Check the hydraulic oil level: Ensure that the hydraulic oil level is within the normal range. Low oil level may cause air to enter the system, leading to pressure issues.
       Check the hydraulic pump: Check if the hydraulic pump rotates normally and if there are any signs of damage or wear. If there is a problem with the pump, it may not be able to provide sufficient oil flow and pressure.
       Check the overflow valve: The overflow valve may open prematurely due to malfunction, releasing pressure. Check if the valve settings are correct and if there are any debris or damage affecting its operation. Clean or adjust the overflow valve as necessary.
       Check hoses and fittings: Check the hoses and fittings in the hydraulic system for wear, leaks, or bends. These components are prone to damage due to wear and tear, resulting in a decrease in pressure and flow rate.
       2. Keep the hydraulic oil clean
       Use high-quality hydraulic oil: Use manufacturer recommended high-quality hydraulic oil to prevent contamination and extend component life.
       Regularly replace hydraulic oil: According to the usage of the equipment and the manufacturer's recommendations, regularly replace hydraulic oil to prevent oil aging and contamination.
       Check the filter: Regularly check the hydraulic oil filter to ensure it is not clogged. A clogged filter can restrict oil flow and cause the system to overheat.

       3. Operator training
       Train operators: Ensure that operators understand the correct operating techniques and early signs of hydraulic system failures, such as decreased accessory performance or leaks.
       Adjust operating conditions: Adjust operations based on terrain, weather, and accessory types to reduce pressure on the hydraulic system.
       4. Preventive maintenance
       Follow maintenance intervals: Check hydraulic oil, cylinders, and connecting components according to the manufacturer's recommended maintenance intervals, typically every 250-500 hours or quarterly.
       Use original components: Always use manufacturer approved hydraulic oil, grease, and original components to ensure compatibility and durability.
       5. Troubleshooting
       No pressure or insufficient pressure: Check the hydraulic oil level and add oil if necessary. Check if the hydraulic pump is working properly and repair or replace the pump if necessary.
       Slow or weak operation: Check pump pressure, filter blockage, and cylinder seal integrity.
       Irregular movement: Check for valve block contamination, air in the system, or incorrect flow settings.
       Overheating: Monitor oil viscosity, cooler efficiency, and bypass valve failure.
       Leakage and pressure drop: Check the hose joints, O-rings, and relief valve settings.
       By following these maintenance steps and recommendations, it is possible to ensure that the hydraulic system of the underground loader operates efficiently, reduce downtime, and extend the service life of the equipment.