COMPONENT OPERATION / Pump Device 5 6 7 Pump Control Pressure Pi1 To Hydraulic Oil Tank Pilot Primary Pressure Pg Pump Control Pressure Pi2 Pump Torque Control Pressure ST 8 9 Self Delivery Pressure Pd1 13 10 11 T4GB-03-01-012 Pump Control Pressure Pi1 To Hydraulic Oil Tank 5 6 7 Pilot Primary Pressure Pg Pump Control Pressure Pi2 Pump Torque Control Pressure ST 8 9 Self Delivery Pressure Pd1 13 10 11 T4GB-03-01-013 T3-1-13 12 12