Excavator Hydraulic Pump 708-2K-00120 708-2K-00122 708-2K-00123 Komatsu PC2000-8 Main Piston Pump Pressure Pump The PC2000-8 is a Komatsu ultra-large mining excavator (PC2000-8 platform). The main pump is a multi-section large-displacement variable displacement piston pump (often a combination of multiple pumps supplying oil, e.g., 708-2K-00122 / 00123), With enormous displacement and very high power, the main pump is the most expensive and most critical component of the