Replacing the high-pressure oil pump cannot be ordered solely based on the excavator's tonnage.Excavators of the same tonnage are equipped with different engines from different factory batches,and the mechanical pump and common rail pump are completely interchangeable.They have similar appearances and cannot be directly installed.Incorrect selection can result in incorrect fuel supply pressure,difficulty starting,insufficient power,high fuel consumption,and even engine damage.Prioritize verifying OE part numbers and then comparing multidimensional physical parameters.　　First and fore...

　　The high-pressure fuel pump,commonly known as the diesel large pump,is the core component of the fuel system in diesel engines and is known as the heart of the diesel engine.The mechanical pump model pressurizes diesel and directly delivers it to the fuel injector;The electronically controlled common rail model pressurizes diesel and delivers it to the common rail pipe,establishing a high pressure of tens to hundreds of megapascals to provide high-pressure fuel to the injectors,determining engine start-up,power,fuel consumption,and exhaust performance.　　High pressure oil pumps are genera...