Fuel Injection Pump Assembly 0445020608 0445020157 for D06frc Diesel Engine Parts

Gear oil pump tips

Working principle of gear oil pump
When the diesel engine is running, the crankshaft gear rotates through the intermediate gear joint oil pump transmission gear, and the driving gear installed inside the oil pump rotates with the driving shaft, and at the same time drives the driven gear to rotate in the opposite direction. The teeth of the driving gear and the driven gear mesh, separating the inside of the pump body into two independent sealed spaces. With the high-speed rotation of the gear, the oil at the oil outlet between the gear teeth is brought to the pressure oil chamber, so that the oil in the oil pressure chamber increases continuously, the pressure rises and is sent out from the oil outlet. The oil in the oil-suction cavity is taken away to generate a partial vacuum, and the oil in the oil sump is continuously sucked into the oil-suction cavity. The oil delivery pressure of the oil pump is generally controlled by the pressure limiting valve on the oil filter. If the oil pressure is too high, the pressure limiting valve will be opened, and the oil inlet will let the oil flow directly into the oil pan to prevent the pressure in the oil circuit. High and oil pump failure.
Faults prone to gear oil pumps
Under normal circumstances, due to the good lubrication conditions of the oil pump, the various wear speeds are still relatively slow. However, after long-term use, the gear end face clearance and tooth surface, the journal and the bearing hole, the pump body and the inner wall of the pump casing will also have different degrees of wear. When it reaches a certain limit, it will lead to a decrease in oil supply and a drop in oil supply pressure.