Wheel loaders operating in grain depots, ports, flour mills, feed factories, and other bulk material scenarios face the problems of easy adhesion, blocking, and corrosion of materials such as grain, coal, ore powder, and feed. Material residues will cause corrosion, block the hydraulic cylinder and radiator, increase the load, and affect the service life. This guide provides anti-blocking, anti-corrosion, and cleaning maintenance measures for bulk material conditions to ensure the efficient operation of loaders.
Daily thorough cleaning to prevent material residue and adhesion. After each operation, clean the grain, powder, and bulk material residues on the bucket, boom, frame, radiator, and chassis with high-pressure air or water. Focus on cleaning the gap between the bucket and the structural parts, the heat dissipation fins, and the hinge points to prevent the material from hardening and corroding the metal surface. For sticky materials, use a special shovel to clean before drying.
Anti-blocking maintenance of the cooling system. Bulk materials such as grain dust and coal powder easily block the radiator, water tank, and intercooler, resulting in poor heat dissipation and engine overheating. Clean the radiator fins frequently to remove dust and debris. Install a dust-proof net or a detachable protective cover at the air inlet to reduce the entry of materials. Check the cooling fan and air duct daily to ensure smooth air circulation.
Lubrication and anti-corrosion of hinge points and rotating parts. Bulk materials are easy to enter the pin shaft and bushing, causing poor lubrication and wear. Use waterproof and anti-adhesion lubricating grease, and lubricate each hinge point every shift. Check the clearance and abnormal noise of the pin shaft daily; replace worn parts in time. Apply anti-rust grease on the surface of the rotating parts to prevent corrosion caused by material moisture.
Bucket anti-adhesion and wear-resistant maintenance. The inner wall of the bucket is polished and coated with anti-adhesion coating to reduce the adhesion of bulk materials. Check the wear of the bucket teeth and bottom plate daily; replace worn parts in time to avoid material residue in the wear gap. For corrosive bulk materials such as chemical fertilizer and salt, carry out anti-corrosion treatment on the bucket to delay rust.
Engine intake and air filter anti-dust maintenance. A large amount of dust and powder will enter the air filter, causing blockage and engine wear. Use a high-efficiency dust-proof air filter and clean or replace the filter element frequently. Check the tightness of the air intake pipe daily to avoid unfiltered dust inhalation. Use high-grade anti-wear engine oil to reduce cylinder wear.
Hydraulic system anti-pollution and anti-blocking maintenance. Material dust and moisture enter the hydraulic oil, causing valve blockage, cylinder wear, and oil leakage. Check the sealing of the hydraulic cylinder and pipeline daily; replace aging seals in time. Shorten the replacement cycle of hydraulic oil and filter element. Use a sealed oil tank to prevent dust entry.
Chassis and tire anti-corrosion and cleaning. Clean the dust and debris on the chassis and tires daily to prevent corrosion. For bulk materials with high salt and alkali content, rinse the chassis with clean water to reduce chemical corrosion. Check the tire pressure and damage daily; avoid material embedding causing tire wear.
Cab and operating system anti-dust protection. The cab is equipped with a high-efficiency air filter to prevent dust from entering. Clean the instrument, control handle, and floor daily to keep the interior clean. Check the sealing of the cab door and window daily to avoid dust intrusion affecting the operator's health.
Regular comprehensive maintenance. Conduct a comprehensive cleaning, lubrication, and anti-corrosion treatment every week. Change the engine oil, hydraulic oil, and filter element monthly. Check the corrosion of the frame and structural parts; repair the damaged paint in time to prevent rust expansion.
Reasonable operation to reduce material scattering. Operate smoothly to avoid material scattering and adhesion. Do not overload to reduce the burden on the whole machine. Park the loader in a dry and ventilated place after work to avoid long-term exposure to moist materials.
In summary, the maintenance of loaders in bulk material conditions focuses on frequent cleaning, anti-blocking, enhanced lubrication, and anti-corrosion. Strict implementation can effectively extend the service life and ensure efficient operation.
