SYSTEM / Hydraulic System Pump Control Circuit Main Pump Delivery Flow Rate Control Pressure oil from the pilot pump flows to the pump control solenoid valve in regulator. The pilot sensor in the controlled circuit sends the signal to MC. The signal from pump regulator pressure sensor is always sent to MC. MC sends the signals according to each signal to the pump control solenoid valve and controls the pump control solenoid valve. Therefore, the pump flow rate is controlled. (Re- fer to the Control System group / SYSTEM.) Fan Pump Delivery Flow Rate Control Pressure oil from the pilot pump flows to the fan pump control solenoid valve in fan pump regula- tor.
MC activates the fan pump control solenoid valve and controls delivery flow rate of fan pump in or- der to adjust temperatures in oil cooler, radiator and intercooler properly. (Refer to Fan Pump Flow Rate Control in the Control System group / SYSTEM.) T2-4-6