What are the matters needing attention when assembling the engine injector

The engine injector assembly process needs to ensure that the parts are clean, and pay attention to the tightness to ensure no oil leakage, in addition to ensure a reasonable torque range. Today we will share with you the matters that should be paid attention to when assembling the generator injector. Diesel engine

In the whole assembly process, it is necessary to ensure that the parts are clean, especially the sealing place of the nozzle coupling itself and the end face of the injector body, even if the small debris dust will cause the sliding block of the coupling parts and the poor sealing of the contact surface.

The shoulder surface of the injector and the nozzle contact should be smooth and smooth, and no carbon or burr should be left, otherwise it will affect the coaxiality and perpendicularity of the nozzle coupling installation, resulting in poor sliding of the nozzle.

During assembly, first screw in the inlet tubing joint with filter element and press the copper washer tightly to seal without oil leakage. Then put the pressure regulating spring and the ejector rod into the injector body, screw in the pressure regulating screw until it just touches the pressure regulating spring, and then screw on the regulating nut.

Clamp the fuel injector upside down on the bench vice, tighten the mother tightly, the tightening torque is 59 ~ 78N·m (6 ~ 8kgf.m). Excessive torque will cause the deformation of the needle valve body and affect the sliding of the needle valve; Too small and oil spills. The assembled injector assembly should be sealed and sprayed on the test bench, and the injection opening pressure should be adjusted.

The above is Shenzhou Wanda for you to introduce the generator injector assembly points for attention what are the content, what do you not know about this, you can talk to me privately, welcome to comment and pay attention to.