Charge pump for Kawasaki K3VL112/B-1NR MM-PO

The charge pump 424-7800B serves as an auxiliary component within hydraulic systems, specifically for axial piston main pumps. It functions by supplying a constant, low-pressure flow of hydraulic fluid to the charge circuit of the main pump. This flow replenishes internal system leakage, maintains positive pressure on the suction side of the main pump, and ensures sufficient fluid availability for operation.

This component is manufactured by Kawasaki and is compatible with the K3VL112/B-1NR MM-PO main pump. It is engineered to meet the specific volume and pressure requirements of this pump model, ensuring the main unit operates within its intended parameters for lubrication and pressure. Proper function of the charge pump is necessary to prevent cavitation and internal wear within the main hydraulic pump assembly.

In closed-loop hydraulic systems, charge pumps are typically gear or vane type units that provide the base pressure required for the main pump to function. By maintaining this charge pressure, the system avoids the risks associated with fluid starvation and overheating, which can lead to premature failure of the primary hydraulic components.