The working principle of the hydraulic system servo valve is based on electromagnetic control, which controls the movement of the valve core through electrical signals sent by the electronic controller, thereby controlling the opening and closing of the oil circuit. The movement of this valve core is usually driven by an electromagnet, which generates electromagnetic force to push the valve core, allowing it to move relative to the valve body, thereby changing the direction and flow rate of the oil flow. This control method enables the hydraulic system toachieve precise control, which means accurate excavation and loading operations can be achieved for loaders, improving work efficiency and job quality.

In the loader's hydraulic system, the servo valve is usually used to control the flow and pressure of the main oil circuit to ensure that the loader's bucket can accurately perform excavation and loading. In addition, it can also be used to control the return oil circuit to ensure the stability and reliability of the hydraulic system. The accuracy and response speed of the hydraulic system servo valve are crucial for the operation of loaders, directly affecting their work efficiency and job quality.

　　To ensure the normal operation of the hydraulic system servo valve, regular maintenance and inspection are required. This includes checking for leaks in the valve body, wear on the valve core, and malfunctions in the electromagnet. If any problems are found, they should be repaired or replaced in a timely manner to ensure the normal operation of the hydraulic system.

In summary, the role of the hydraulic system servo valve in the loader's hydraulic system is irreplaceable. It ensures that loaders can efficiently and stably complete various operation tasks by precisely controlling the hydraulic system. For any hydraulic system that requires precise control, the hydraulic system servo valve is an indispensable key component.