... 30,XINCHAI..HYDRAULIC SYSTEM: MAIN PUMP, PILOT PUMP AND VALVE, WORKING PUMP, CONTROL VALVESTEERING SYSTEM: STEERING UNIT, STEERING PUMP AXLE ... unit, drive axle L=638, center slewing joint, center slewing joint, stay leg control system, cover plate assy, hydraulic oil case, hydraulic ... ton crane with pump pump xugong crane ,Hydraulic Pump: HP051B67820201002GA, Hydraulic Pump, High-pressure gear pump, D- ...