Cause analysis of cylinder liner wear 1. Wear caused by improper use 1) The filter effect of lubricating oil filter is poor. If the lubricating oil filter is not working properly, the lubricating oil can not be effectively filtered, and the lubricating oil containing a large number of hard particles will inevitably aggravate the wear of the inner wall of the cylinder liner. 2) Low filtration efficiency of air filter. The role of the air filter is to remove dust and sand particles contained in the air entering the cylinder to reduce the wear of the cylinder, piston and piston ring parts. The experiment shows that if the engine is not equipped with air filter, the wear of the cylinder will increase by 6-8 times. The air filter is not cleaned and maintained for a long time, and the filtration effect is poor, which will accelerate the wear of the cylinder liner. 3) Long-term low temperature operation. Running…