Grove
Charging pump assembly for Grove RT865
This charging pump assembly 9904103787 is designed for use in Grove RT865 and ZAXIS450, as well as Hitachi RT865 and ZAXIS450 machinery. It maintains the necessary hydraulic pressure for the main pump system.
Compatible models
Specifications
- Part number
- 9904103787
- Brand
- Grove
The charging pump assembly serves as a critical component in hydraulic systems, specifically designed to supply a constant, low-pressure flow of hydraulic oil to the inlet of the main pump in a closed-loop system. By maintaining this charge or replenishment pressure, the component ensures the main pump remains properly primed and compensates for internal system leakage. This process is necessary for the operation of hydrostatic transmission systems, slewing circuits, and winch drives found in heavy machinery.
This component is compatible with the Grove RT865 crane and the Hitachi ZAXIS450 excavator. It is engineered to meet the specific operational requirements of these machines, ensuring consistent hydraulic performance during heavy-duty construction and mining applications. Proper maintenance of the charging pump is necessary to prevent cavitation in the main hydraulic pump, which can occur if the inlet pressure falls below required levels. By ensuring adequate flow, this pump helps maintain the overall efficiency and control of the machine's hydraulic circuits.

