COMPONENT OPERATION / Pump Device MAIN PUMP, FAN PUMP The main pump and fan pump are swash plate type variable displacement plunger pump. Shaft (1) is splined to cylinder block (3). Plunger (2) is inserted into cylinder block (3). The engine output is transmitted to shaft (1) via the pump transmission. When shaft (1) rotates, plunger (2) rotates with cylin- der block (3) together. Plunger (2) slides on shoe plate (4) and reciprocate in the bore of cylinder block (3) due to inclination of swash plate (5). By this reciprocation, suction and delivery of hydraulic oil are carried out.
T1J1-03-01-002 T1J1-03-01-003 1 - Shaft 3 - Cylinder Block 4 - Shoe Plate 5 - Swash Plate 2 - Plunger T3-1-2 2 3 Main Pump 1 5 4 2 3 Fan Pump 1 5 4 2 3 5 4 2 3