Excavator Hydraulic Pump 708-1L-00070 708-1L-00032 708-1L-03400 Komatsu PC100-6 PC110-6 PC120-6 PC130-6 Small Nose Hydraulic Main Piston Pump Komatsu PC200-6 PC210-6 PC240-6 PC270-6 Small Nose Hydraulic Main Piston Pump Common Faults Weak digging power when hot: Internal leakage from worn pistons, cylinder block and valve plate. Engine lugging: Stuck PC valve or malfunction of EPC solenoid valve. Slow actions & soft lever: Worn rear pilot pump or stuck LS valve. Abnormal