Komatsu PC600/650-8 Excavator Main Control Valve Part Number: 709-99-15100 Procurement Recommendations Verify OEM part number and confirm valve assembly compatibility with complete boom, arm, bucket, and travel spool sections Ensure new or remanufactured valves include hydraulic bench test reports covering pressure, flow, and internal leakage for each section For remanufactured valves, confirm spools are new or honed and repaired, with replacement of all O-rings, relief