CAT Hydraulic Gear Oil Pump Piston Pump 9T4104 9T-4104 for CAT Tractor D4H High Pressure

1. The pump body is equipped with a pair of identical external meshing gears, both sides of the gears are sealed by the end cover;

2. The pump body, the end cover and the various tooth slots of the gear constitute a number of sealing working cavities.

1. When the gear rotates in the direction shown in the figure, the lower oil suction cavity gradually breaks off due to the meshing teeth (as shown in the figure, the tooth IO exits between the tooth l' and 1O'), which increases the volume of the oil suction cavity and forms a certain vacuum degree;

2.The oil in the oil tank enters the oil suction chamber under the action of atmospheric pressure on the oil surface, fills the tooth groove, and is brought to the upper oil discharge chamber along with the rotation of the gear;

3. In the oil discharge chamber, because the gear teeth gradually enter the mesh (as shown in the picture, the gear teeth l into the gear teeth between l' and 2'), the volume of the sealing working chamber continues to shrink, and the oil is discharged;

4. With the continuous rotation of the gear, the oil suction and oil discharge of the pump are continuously carried out, and the oil is continuously transported out.