pilot pump on excavator

What is an excavator pilot pump: A low-pressure oil pump that provides a control system, including handles, foot pedals, and some control valves attached to travel motors and rotary motors. The importance of pilot pump on excavator: The pilot pump pushes the main control valve block through the pilot PPC valve to flow the high hydraulic oil from the main pump to the predetermined cylinder or motor. If the pilot pump fails, the main control valve will not work, which will affect the efficiency of the entire hydraulic system. Therefore, the importance of the pilot pump cannot be underestimated.