COMPONENT OPERATION / Pump Device Pump Control Pressure Pi1 To Hydraulic Oil Tank Pilot Primary Pressure Pg Pump Control Pressure Pi2 6 7 5 Pump Torque Control Pressure ST 8 9 Self Delivery Pressure Pd1 13 10 12 11 T4GB-03-01-014 Pump Control Pressure Pi1 To Hydraulic Oil Tank Pilot Primary Pressure Pg Pump Control Pressure Pi2 5 6 7 Pump Torque Control Pressure ST Self Delivery Pressure Pd1 13 10 11 T4GB-03-01-015 T3-1-15 12