This is more in accordance with the provisions of maintenance. The main aspects are as follows:

(1) Do not choose the specified quality and the specified grade of oil, will not be diesel engine oil or performance does not meet the requirements of diesel engine oil added to the diesel engine, a friction face can establish a complete and a certain thickness of the oil film, lubrication performance is poor, easy to cause cylinder, burning fault. If the viscosity of the oil is too small, the oil film on the friction surface is difficult to form and maintain when the temperature is high. If the oil with too much viscosity is used, the fluidity is poor and it is not easy to be transported to the friction surface clearance of the parts, so the reliable lubrication of the lubrication parts can not be realized, which will also lead to the failure of pulling cylinder and burning tile.

(2) Add or replace the oil is not timely, add the oil is not timely, it will produce the above problem of insufficient oil. Oil in the continuous working process of diesel engine will be inhaled from the air dust and diesel engine combustion products and wear products pollution and dirty, and gradually deteriorate under the influence of high temperature, finally make the lubrication performance and lubrication effect can not meet the requirements of use, if not replaced in time, not only the mechanical impurities in the oil will aggravate the wear of parts, And make the lubrication worse and even cause the oil pipe, oil channel blockage caused by pulling cylinder, burning tile and other failures.

(3) Cleaning the oil filter is not timely, which will cause the oil filter resistance is too large or even blocked, so that the oil does not pass through the filter element and passes through the bypass valve, and the use of unfiltered oil to lubricate the inner surface of the cylinder liner, it is easy to cause serious wear and strain of the cylinder liner and piston assembly.

(4) Poor maintenance of the air filter. Dust and sediment in the air will be sucked into the cylinder with the air due to the poor maintenance of the air filter or the leakage of the intake system, forming harmful abrasive, adhering to the inner surface of the cylinder liner, so that the friction surface of the cylinder liner and the piston assembly will suffer strong particle wear and strain.

(5) Check and adjust the oil supply advance Angle is not timely. This will cause the diesel engine advance Angle is too large, resulting in the diesel engine rough work, cylinder liner and piston heat load and mechanical load increase, easy to cause cylinder holding, pulling cylinder failure.