When can the hydraulic system produce high power?

The hydraulic system of a tractor-loader-backhoe (TLB) is designed to generate high power when operating under load. This is because the hydraulic system relies on the engine to pump hydraulic fluid through the system, which powers the various functions of the machine, such as lifting, digging, and operating attachments.

When the machine is under load, the hydraulic system can utilize the pressure from the engine effectively to perform more demanding tasks, like lifting heavy materials or digging into the ground. This requires a significant amount of hydraulic power to overcome the resistance of the load. When the engine is idling or shut down, the hydraulic system does not have the capacity to build pressure needed for high-power tasks, and moving at high speeds does not necessarily correlate with maximum hydraulic power output; it's more about the demand placed on the system when performing heavy tasks.