Excavator Hydraulic Pump 708-1L-00650 708-1L-00651 708-1L-01650 Komatsu PC130-7 PC120-7 PC110-7 Main Piston Pump
High-performance main piston pump designed for Komatsu PC130-7, PC120-7, and PC110-7 excavators. Compatible with part numbers 708-1L-00650, 708-1L-00651, and 708-1L-01650.
Common Faults & Solutions
- Weak digging power when hot: Internal leakage caused by worn pistons, cylinder block and valve plate
- Engine lugging: Stuck PC valve or malfunction of EPC solenoid valve
- Slow actions & high oil temperature: Stuck LS valve or worn pump internals
- Abnormal noise & vibration: Cavitation, damaged bearing or piston shoe
- Large case drain flow: Serious internal wear of pump assembly
- Unstable operation: Abnormal EPC signal or intermittent LS valve sticking
- Fault code E18/E27: Failed EPC solenoid or damaged wiring harness
Product Images