For some inexperienced repairmen, scraping tile is a difficult work, because scraping tile technology is difficult to master, so the bearing bush is not easy to meet the technical requirements.
For this reason, someone in the replacement of the bearing bush, in order to increase the bearing bush and crankshaft contact area, with sand cloth grinding instead of scraping tile.
This method is highly undesirable in practical maintenance, because the abrasive particles on the emery cloth are relatively hard, while the bearing alloy is relatively soft, so the sand particles can be easily embedded into the alloy when grinding, and the wear of the shaft neck will be accelerated when the diesel engine is working and the service life of the crankshaft will be shortened. Reducing SINOTENG wheel loader, excavator products such as life.