Hydraulic Pump Steering Pump for PC220-7 and PC220LC-7 Part Numbers: 708-2L-00112, 708-2L-00300, 708-2L-31123, 708-2L-31160 Product Description The hydraulic main pump models commonly used for the PC220-7 and PC220LC-7 excavator Part Numbers: 708-2L-00112, 708-2L-00300, 708-2L-31123, 708-2L-31160 Common Faults Insufficient output flow of hydraulic pump, slow and weak machine operation Insufficient pressure of steering pump, heavy steering and slow response Abnormal noise