When the injection pump plunger issues a card, it will affect the normal operation of the governor, which will easily cause the engine to fly. If it is not handled in time, it will cause serious accidents. 1, the plunger bent. Due to the fact that the plunger couples do not pay attention during transportation, storage, and assembly, the plunger is slightly bent and the card is stuck during work. This situation should be replaced in time. 2. The plunger hits a hair and is damaged. As the plunger is not cleaned during assembly, or impurities enter between the plunger pairs, the assembly does not pay attention, and the plunger is scratched, causing the plunger to issue a card. Therefore, the assembly should be carefully installed, do not bump the plunger, and clean the plunger pair to prevent impurities from entering the plunger pair. 3, sleeve positioning screws are too long. If you forget to install the washer when the plunger sleeve is too long or the set screw is installed, it will top the sleeve and cause the sleeve to misalign, causing the plunger to issue a card. If the set screw is too long, the amount may be short. Do not forget to install the washer when installing the set screw. 4, the pump base is uneven. Because the base of the plunger sleeve of the pump body is uneven or dirty, the assembling accuracy of the sleeve is affected, and the assembly of the oil pump plunger is skewed, resulting in the plunger issuing a card. To check the unevenness of the pump body, pull the fuel injection pump from the body, connect the low-pressure oil circuit and open the fuel tank switch so that the pump body is filled with diesel oil and the outside of the fuel injection pump is wiped clean. If oil is found at the wheel, it means that the base of the pump is uneven, causing leakage of diesel oil. An old plunger sleeve can be used to coat the sand on the shoulder and put it into the pump body to rotate and tap the sleeve. Grind, grind, refit and inspect for oil leaks. 5, the new plunger storage time is too long. The long storage time of the new plunger is likely to cause oil loss and oxidation reaction, causing the plunger to rust and assembling without cleaning, causing the plunger to issue a card during work. In this case, the plunger must be put into kerosene or diesel for a certain period of time. Then, the plunger is rotated and reciprocally traversed to grind each other until the plunger pair rotates flexibly. After careful cleaning, it can be assembled and used. Textile Enzymes,Poultry Feed Enzymes,Feed Phytase,Enzyme For Textile Tangshan Finely Animal Care Co.,Ltd , https://www.faczyme.com