GENERAL / Component Specifications HYDRAULIC COMPONENT PUMP DEVICE Drive Gear Ratio ............................................ Main Pump: 1, Pilot Pump: 1 MAIN PUMP Type ............................................................... Bent-Axis Type Variable Displacement Axial Plunger Pump Model ............................................................. HPV145FW Maximum Flow Rate (Theoretical Value).......288 L/min (76 US gpm) Ч 2 Maximum Flow (Theoretical Value)................145.5 L/min (38.4 US gpm) Ч 2 Rated Pressure .............................................. 34.3 MPa (350 kgf/cm 2 , 4990 psi) REGULATOR Type ...............................................................
Hydraulic Pressure Operated Type PILOT PUMP Model ............................................................. HY/ZFS 11/16.8 Type ............................................................... Fixed Displacement Type Gear Pump Maximum Flow (Theoretical Value)................ 31.9 L/min (8.4 US gpm) CONTROL VALVE Type ............................................................... Pilot Pressure Operated Type (4-Spools + 5-Spools) KVMG-270-HF Main Relief Set-Pressure ............................... Normal: 34.3 MPa (350 kgf/cm 2 , 4980 psi) at 260 L/min (69 US gpm) Power Digging: 36.3 MPa (370 kgf/cm 2 ) at 260 L/min (69 US gpm) Overload Relief Set-Pressure ........................
37.2 MPa (380 kgf/cm 2 , 5410 psi) at 50 L/min (13.2 US gpm) (Boom Lower, Arm Roll-In, Bucket Roll-In) 39.2 MPa (400 kgf/cm 2 , 5690 psi) at 50 L/min (13.2 US gpm) (Boom Raise, Arm Roll-Out, Bucket Roll-Out) T1-3-5