COMPONENT OPERATION / Pump Device PILOT PUMP Drive gear (1) is driven throught the shaft of the main pump, and the diven gear (2) geared to this also rotates. 1 - Drive Gear 2 - Driven Gear PUMP DELIVERY PRESSURE SENSOR Pump delivery pressure necessary for various kinds of control is sensed. Hydraulic pressure is received by the diaphragm (9), and deformation of the diaphragm is sensed as an electric signal. 1 Suction Port 2 Delivery Port T137-02-03-005 6 - Earth 8 - Electric Source (5V) 7 - Output 9 - Pressure-applied Part (Diaphragm) 6 7 8 9 T157-02-03-010 T3-1-19