SYSTEM/Hydraulic System Charging Block Pilot Pump Pump Torque Control Solenoid Valve Hydraulic Oil Tank Command Signal from MC PS2 Pilot Presser (X) Control Valve Orifice Pump From Control Valve Pi2 Pi1 Main Pump Servo Piston T4GB-02-02-003 Main Pump Regulator NOTE: Control valve illustrated is for ZW220. T2-3-27