GENERAL / Component Specifications HYDRAULIC COMPONENT PUMP DEVICE Drive Gear Ratio.............................................Engine: 1, Pump 1 and 2: 53/57 Engine: 1, Fan Pump: 1 Engine: 1, Pilot Pump:
32/31 MAIN PUMP Type................................................................Variable Displacement Swash Plate Tandem Plunger Pump Maximum Flow (Theoretical Value)................463 L/min (122 US gpm) Ч 2 FAN PUMP Type................................................................Variable Displacement Swash Plate Tandem Plunger Pump Maximum Flow (Theoretical Value)................91 L/min (24 US gpm) PILOT PUMP Model..............................................................HY/ZFS 11/16.8 R Type................................................................Fixed Displacement Type Gear Pump Maximum Flow (Theoretical Value)................33.6 L/min (8.88 US gpm) HP Mode:
35.3 L/min (9.33 US gpm) CONTROL VALVE Model..............................................................UH36-200 Type................................................................Pilot Pressure Operated Type (4-Spools + 5-Spools) Main Relief Set-Pressure...............................Normal: 31.9 MPa (325 kgf/cm 2 , 4638 psi) at 340 L/min (90 US gpm) Power Digging: 34.3 MPa (350 kgf/cm 2 , 4987 psi) at 320 L/min (84 US gpm) Overload Relief Set-Pressure ........................35.3 MPa (360 kgf/cm 2 , 5132 psi) at 110 L/min (29 US gpm) (Arm, Bucket, Boom, Auxiliary Close) 27.9 MPa (285 kgf/cm 2 , 4053 psi) at 110 L/min (29 US gpm) (Auxiliary Open) T1-3-5