708-2L-00950 708-2L-00951 708-2L-00930 708-4L-00930 Main Hydraulic Pump Assembly Product Overview Main Hydraulic Pump Assembly or Steering Work Pump Assembly, suitable for Komatsu models such as WA800-3 and WA900-3. Common Faults Insufficient system pressure, weak lifting and bucket curling Abnormal noise and heavy vibration of hydraulic pump, cavitation sound Excessive internal pump leakage, rapid oil temperature rise Damaged pump shaft seal, external oil leakage on pump