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Fitting Technology of Dry Cylinder Liner of Yuchai Diesel Generator Set

Aug. 15, 2023

When the cylinder of Yuchai diesel generator set exceeds the last maintenance dimension, or there are deep grooves and small cracks on the cylinder wall, if the cylinder maintenance method fails to achieve the purpose, or the cylinder enamel conditions are not available, the problem can only be solved by replacing the cylinder liner of Yuchai diesel generator set with the insertion method. When the cylinder liner is inserted for the first time, the cylinder liner with standard size shall be selected for future multiple insertion and maintenance. After removing the old cylinder liner, check whether the cylinder liner bearing hole of Yuchai diesel generator set meets the requirements. The matching interference between cylinder liner and bearing hole of Yuchai diesel generator set should be appropriate.


Yuchai Power Generator Set


The fit clearance between the cast iron cylinder liner flange and the bearing hole is 0.25-0.40mm. If the old bearing hole of Yuchai diesel generator set matches the newly selected cylinder liner, if it does not meet the requirements, the bearing hole of Yuchai diesel generator set shall be readjusted to the required size. If there is no press sleeve, hydraulic or mechanical tools can be used to tension the cylinder liner. During the pressurization process, the cylinder liner of Yuchai diesel generator set should always be perpendicular to the plane of the cylinder block, and the pressure of Yuchai diesel generator set should gradually increase. After pressing 30-50mm, loosen it and adjust the cylinder liner position of Yuchai diesel generator set naturally.


During the pressing process, if the resistance of Yuchai diesel generator set suddenly increases, stop it immediately to find out the reason for preventing the cylinder wall of Yuchai diesel generator set from being crushed. In order to prevent the cylinder block of Yuchai diesel generator set from deformation, the method of sequential cylinder pressure shall be adopted when pressing the dry cylinder liner. After the cylinder liner of Yuchai diesel generator set is pressed into the bearing hole, its end face shall not be lower than the upper plane of the cylinder block or higher than 0.10 mm. When the height of Yuchai diesel generator set is high, it can be trimmed with a file or fixed cylinder liner. The cylinder liner is brush plated. When the cylinder liner bearing hole of Yuchai diesel generator set becomes larger and cannot match the proper cylinder liner, the outer wall of the cylinder liner can be repaired by brush plating. When brushing, nickel plating solution and copper plating solution can be used. When multi-layer electroplating is used, the coating thickness can reach 0.20 mm, which can meet the requirements of interference fit between cylinder liner and cylinder wall.


Dingbo Power has advanced testing equipment, modern production technology, professional manufacturing technology, perfect quality management system, and strong technical research and development capabilities. It can provide 3KW~2500KW various specifications of ordinary, automatic, four protection, automatic switching, low noise and mobile generator sets, high quality and low energy consumption to meet the diverse power needs of customers, and can also meet users with different voltages and different frequencies. It is required to create a parallel power supply system for multiple units. If you are interested in our product or any question on generator, welcome to send email to sales@dieselgeneratortech.com.

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