In what condition is the hydraulic system's pressure not adequate?

The hydraulic system's pressure is deemed inadequate specifically during a hydraulic failure. This can occur due to various reasons such as fluid leaks, component failures, or blockages, which disrupt the system's normal operation. When a hydraulic failure occurs, the system cannot generate or maintain the necessary pressure for effective operation, rendering it unable to perform its intended functions, such as moving parts or controlling mechanisms.

Under high load conditions, the hydraulic system is expected to function normally, although it will operate at its upper performance limits. A pressure exceeding a certain threshold, such as 3500 psi, indicates that the system is functioning under higher than normal pressures, not inadequate pressure. Low ambient temperatures can affect fluid viscosity and performance but do not directly indicate that pressure is inadequate; systems can be designed to operate in a range of temperatures. Thus, the condition of a hydraulic failure is the definitive cause of inadequate pressure in the system.