hitachi — Hydraulic Component

GENERAL / Component Specifications RIDE CONTROL VALVE (OPTIONAL) Type.......................................................... Pilot Pressure Operated Type Overload Relief Set Pressure................... 39.2 MPa (400 kgf/cm 2 ) @ 50 L/min (13 US gpm) Charge Cut Pressure................................ 11.3 MPa (115 kgf/cm 2 ) RIDE CONTROL ACCUMULATOR (OPTIONAL) Capacity.................................................... 4 L (244 in 3 ) Charging Pressure ................................... 2.9 MPa (30 kgf/cm 2 ) CHARGING BLOCK Charging Pressure ................................... Cut In Pressure: 11.8 MPa (120 kgf/cm 2 ) Cut Out Pressure:

14.7 MPa (150 kgf/cm 2 ) Pilot Relief Valve Set Pressure................. 3.7 MPa (38 kgf/cm 2 ) @ 40 L/min (10.6 US gpm) SOLENOID VALVE (For Charging Block) Function.................................................... Main Pump Torque Control Parking Brake SERVICE BRAKE ACCUMULATOR Capacity.................................................... 1.4 L (85.4 in 3 ) Charging Pressure ................................... 4.4 MPa (45 kgf/cm 2 ) PILOT ACCUMULATOR Capacity.................................................... 0.75 L (45.8 in 3 ) Charging Pressure ................................... 2.0 MPa (20 kgf/cm 2 ) PILOT SHUT OFF VALVE Type..........................................................

Rotary Type STEERING VALVE Type.......................................................... Flow Amp Type Over Load Relief Set Pressure ................ 32.3 MPa (330 kgf/cm 2 ) @50 L/min (13 US gpm) T1-3-8