Product Overview This is an original-specification swash-plate variable-displacement axial piston pump, model HK5V160DT-9NH9 , specially fitted for R330LC-9 , R330LC-9S , and R335LC-9 excavators. It adopts a tandem variable piston pump structure with a pilot gear pump, acting as the main hydraulic power unit of the excavator. It supplies steady hydraulic oil for the boom, arm, bucket, and travel hydraulic circuits. Technical Specifications Pump Model HK5V160DT-9NH9 Type Swash