Excavator Hydraulic Pump 95601040 95784040 96326540 Komatsu PC4000-6 PC8000-6 Main Piston Pump Pressure Pump The PC4000/8000-6 is a Komatsu ultra-large mining hydraulic shovel . The machine uses multiple large-displacement variable displacement piston pumps supplying oil in parallel for working, rotating and other circuits, plus a pilot pump. 95601040 is one of the main pump part numbers for this model. These pumps have enormous displacement, very high power and very high