What are hydraulic noise and cavitation typically signs of?

Hydraulic noise and cavitation are often indicative of low fluid levels or improper valve function. When fluid levels are low, the system may not be able to maintain adequate pressure, leading to phenomena such as turbulence and unstable flow. This instability can result in the formation of vapor bubbles, which causes cavitation when these bubbles collapse, producing noise as well as potential damage to system components.

Improper valve function can also contribute to abnormal hydraulic noises and cavitation. If a valve is not opening or closing correctly, it can restrict the flow or create pressure surges that lead to these issues. In contrast, excessive pressure, high viscosity fluids, or corruption of fluid properties are less directly related to the immediate symptoms of noise and cavitation, making low fluid levels and improper function the more accurate causes to identify in this scenario.