What is a common fault that can cause servo valve systems to become inoperable?

A plugged filter is indeed a common fault that can cause servo valve systems to become inoperable. The function of a filter in a hydraulic system is to remove contaminants from the fluid before it reaches sensitive components like servo valves. When a filter becomes plugged, it restricts the flow of hydraulic fluid, which is essential for the proper operation of the servo valves. Insufficient fluid flow can lead to a failure of the valves to respond correctly or to operate at all, rendering the servo system inoperable.

Maintaining clean filters and ensuring they are not clogged is critical in hydraulic systems, as even minor contaminants can lead to significant operational issues. This highlights the importance of regular maintenance and monitoring of filtration systems in hydraulic applications, particularly for servo valves that require precise control and responsiveness.