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Cylinder cover using maintenance technology

Cylinder cover using maintenance technology


Author:Dekenag  Alice


The common fault of cylinder head is "three leakage", that is air leakage, water leakage, oil leakage.The appearance of "three leakage" phenomenon will bring serious consequences to the engine work.


Leakage is mainly caused by loose sealing of the end face under the valve or cylinder cover. Therefore, if there is carbon deposition on the sealing surface of the valve seat, it shall be cleaned in time. If the sealing surface is too wide or there are grooves, pitting and dents, etc., the valve seat shall be repaired or replaced according to its degree. Cylinder cover warping deformation and cylinder cushion damage also lead to air leakage. In order to avoid cylinder cover warping and cylinder cushion damage, cylinder cover nuts must be tightened in the prescribed order. Tightening torque should meet the requirements.


Leakage is mainly due to a crack in the cylinder cover or water seal is not tight. In order to prevent cracks, the load must be gradually increased after the engine starts. The engine cannot work overtime; In severe cold areas, always put out cooling water after parking.