Correct adjustment of fuel supply will help to improve the service life of fuel injection pump. The main factors affecting the adjustment of fuel supply are temperature, dust, altitude and injector itself.

The viscosity of diesel varies with the rise and fall of the temperature. When the ambient temperature increases, the viscosity of diesel decreases, and then increases. As a result, when the temperature drops, the fuel supply will increase slightly. (the test proves that when the temperature drops to 6 degrees, the fuel supply will change within the range of 20%-40%). When the fuel temperature is lowered, resistance will be caused by the high pressure pipe of the oil pipeline and the fuel pipe of Baotou Bei Ben heavy truck fittings. When the fuel temperature is at 40 degrees, the adjustment of oil supply is the most suitable.

It is necessary to decompose and repair the fuel pump of Baotou Bei Ben heavy truck fittings in the environment without dust or dust. Otherwise, there will be some comb wounds on the surface of the coupling. To adjust fuel supply, it is necessary to use standard fuel injectors and high-pressure oil pipes of Baotou Ben Ben heavy truck according to regulations, otherwise, the fuel supply of each cylinder will be deviate.