Reasons for cylinder pulling:

The reasons for cylinder pulling are very complex, with design factors such as material selection, determination of gap size, appropriateness of device installation, reasonable structural layout, surface roughness, and perfect lubrication and cooling arrangements. From a management perspective, it may be caused by the following reasons:

(1) Poor cylinder lubrication:

The cylinder is not lubricated enough or the oil supply is interrupted, and the cylinder is pulled due to direct metal contact. The reasons for poor cylinder lubrication include: too little oil in the oil pan or poor oil quality, too high temperature of the diesel engine, or damage or failure of the piston ring (mainly the oil ring).

(2) Insufficient running-in:

To achieve effective break-in in the shortest possible time, it is necessary to consider the issues of break-in time and load distribution. Even if the break-in is carried out for a long time under low loads, it cannot be completed. However, if the engine is in a hurry to operate at high loads, it may cause cylinder pulling. Therefore, during the diesel engine break-in period, it should be noted that the amount of oil injected should be appropriately increased; After the piston ring is renewed, it should run under low load for a period of time; After replacing the piston and cylinder liner, they should be run in before increasing the load for operation.