The excavator engine burning the bearing shaft is the big accident of the excavator engine, the light is the erosion of the tile and the crankshaft, the delay of the repair progress, the increase of the repair cost, the weight of the connecting rod bolt, so the connecting rod is removed, the body is mashed and even hurt the person, causing the heavy loss to the user.
Seven ways to prevent the excavator engine from burning the tile and holding the shaft.
1 must not limit the concentricity of the main shaft. The repair of the excavator engine must ensure that the concentricity of the spindle is in accordance with the technical requirements. No boring machine does not work on the main shaft of the spindle. The boring machine should be operated carefully, and all the unqualified unloader should be used.
2, attention should be paid to the scraping and distributing of the bearing bush. When the connecting rod tile or spindle bush is replaced, the scraping and matching shall be carried out seriously.
3 cylinder body and main oil channel must be cleaned and cleaned. The long time use of the excavator engine will deposit a lot of dirt in each oil channel. It must be thoroughly cleaned and cleaned to use. For example, the 200 excavator of a Tai Komatsu is not clean because of the cylinder body cleaning, and the result of the excavator operation is not long after the operation of the alloy debris in the oil passage into the lubricating parts. Moving the surface, thus causing the accident of the burning and pulling the cylinder.
For this reason, the cleaning body should remove all the oil blocking screws of the oil channel, and use the steel wire with non jump gasoline to pass the wash oil. Finally, the compressed air is blown and the oil is injected with clean oil to be used for assembly.
4 the grade or quality of the oil must be correctly qualified. For example: the 200 excavator of Komatsu has a change of oil, because there is no regulation of the medium turbocharger oil on the site, then the ordinary diesel engine oil is replaced by the ordinary diesel engine oil, and the result occurs the connecting rod and the malignant accident of the body. The original is the second cylinder connecting rod first burning the bearing shaft, so the temperature increases sharply and pulls. For connecting rod bolts, for supercharged engines, the required rated oil must be used.
