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Motor graders operate under high loads and in complex working conditions over extended periods. Only by establishing a standardized maintenance regimen can you ensure the equipment remains in good working condition, reduce the failure rate, and extend its service life. Routine maintenance includes not only inspections of the engine, hydraulic system, and transmission system but also proper hydraulic fluid management and maintenance during long-term storage, thereby ensuring the equipment’s continuous and stable operation.
Conduct Daily Inspections to Prevent Failures Before each startup, perform a comprehensive inspection of the entire machine, focusing on checking the engine, hydraulic system, and cooling system for oil or fluid leaks. Simultaneously, inspect the tires, hoses, fasteners, and working equipment for wear, looseness, or damage. Keep the working equipment and turntable area clean, promptly removing debris such as gravel and dirt to prevent interference with normal component operation. The cab windows, rearview mirrors, and safety markings should also be kept clean and intact to ensure the operator has a clear line of sight and a safe operating environment. After starting the equipment, verify that all gauges and warning systems are functioning properly before proceeding with operations according to specifications. Avoid high-speed starts, sudden acceleration, and frequent hard braking to minimize wear on the drivetrain and braking systems. Enhance Hydraulic Fluid Management to Improve Hydraulic System Reliability The hydraulic system is a critical component of a motor grader, and hydraulic fluid directly affects the system’s operational efficiency and service life. High-quality hydraulic fluid should have appropriate viscosity, good viscosity-temperature characteristics, excellent lubrication and anti-wear properties, as well as strong resistance to oxidation, rust, corrosion, emulsification, and foaming, and should be compatible with sealing materials. Maintaining fluid cleanliness is also essential for ensuring the stable operation of the hydraulic system. During routine maintenance, hydraulic oil contamination must be strictly controlled. When refilling with new oil, use a filter with a filtration precision of at least 120 mesh; regularly check the cleanliness and oil level of the hydraulic fluid, and replace it promptly according to the equipment’s maintenance schedule. When changing the oil, drain as much of the old oil from the system as possible; if necessary, use a circulation flushing method to improve the effectiveness of the oil change. In addition, the work environment should be kept clean during the disassembly and assembly of hydraulic components to prevent dust, moisture, and other contaminants from entering the hydraulic system, thereby reducing the risk of abnormal wear and failure of hydraulic components. Conduct Scheduled Maintenance In addition to daily inspections, comprehensive inspections and maintenance of the engine, hydraulic system, transmission system, cooling system, and electrical system should be performed according to the maintenance intervals recommended by the equipment manufacturer. Pay particular attention to checking the levels of hydraulic fluid, engine oil, transmission fluid, coolant, and fuel system, and replace filters and wear-prone parts in a timely manner. Developing a reasonable maintenance plan based on the equipment’s operating environment and workload helps maintain stable overall performance, reduce unexpected failures, and improve equipment availability. Long-Term Storage Should Not Be Overlooked When a motor grader needs to be stored for an extended period, protective measures should be taken in advance. The equipment should be parked on a level, dry surface, and the entire machine should be thoroughly cleaned to remove mud, oil residue, and other corrosive substances.
Additionally, drain any accumulated water from the fuel system, inspect and maintain the battery, and store it in a well-ventilated, dry environment while ensuring it remains fully charged. During long-term storage, it is recommended to start the equipment periodically or perform necessary inspections and maintenance to prevent seal deterioration, component corrosion, and a decline in hydraulic system performance. Proper maintenance is the cornerstone of ensuring the efficient operation of a motor grader. By adhering to daily inspections, strengthening hydraulic oil management, implementing regular maintenance, and properly managing long-term storage, you can not only reduce equipment failure rates and improve operational efficiency but also effectively extend the service life of the machine and its key components, thereby lowering operating costs over the equipment’s entire lifecycle.
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