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Things to pay attention to when buying cylinder liners

Things to pay attention to when buying cylinder liners

2019-05-14 14:17

Everyone knows that the cylinder liner is very important to the combustion chamber, and a good cylinder liner is even more important for the entire engine. Therefore, many customers are worried when choosing a cylinder liner. Choosing one is suitable in terms of quality and price. The cylinder liner is very important. What should you pay attention to when buying cylinder liners? The following editor will introduce to you.

1. Group code

When purchasing new parts, check the size group code of the standard cylinder liner and piston. The installed cylinder liner and piston should make the size group code of the standard piston the same as the size group code of the standard cylinder liner. Only in this way can there be a standard fit. gap. For multi-cylinder diesel engines, each cylinder should be equipped with cylinder liners and pistons with the same group code.

2. Inspection before installation

Pay attention to check the cylinder plug gap before installation. Sometimes the size grouping code of cylinder liner and piston is the same. In order to ensure the assembly standard, a test should be carried out before installation to prevent fake and inferior products from being confused. For multi-cylinder high-speed diesel engines, it is also important to note that the weight difference of each cylinder piston group should be within the specified range.

3. Cylinder liner clearance

To detect the cylinder plug gap, qualified repair shops use a cylinder gauge to measure the inner diameter of the cylinder liner, use the outer diameter to measure the size of the piston skirt, and then calculate the gap between the two. If you have no conditions, you can use a long piece of thickness gauge to measure. The method is to put the piston upside down into the upper part of the cylinder liner, and then push the thickness gauge into the cylinder liner together with the piston. The direction is perpendicular to the direction of the piston pin hole. The force can pull out the thickness gauge as appropriate. Then measure a few more points along the circumference of the cylinder liner, and then assemble it after you feel qualified. After the cylinder sleeve is inserted into the body, when installing the piston, the cylinder plug gap should be rechecked to prevent the cylinder sleeve from being squeezed and deformed when installed in the body, which will affect the assembly quality.

The above is about the things you need to pay attention to when buying cylinder liners. I hope it can help everyone.

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