Work will have a lot of dust and impurities attached to the cylinder rod, dust seal can prevent dust and impurities into the cylinder, to prevent the damage to the cylinder and oil seal, dust seal in the case of damage, the dust directly into the cylinder head, direct damage Oil seal and the cylinder, in the case of large dust, do not have dozens of hours of oil seal will wear, there are obvious wear and tear inside.

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The cylinder is black, the inner wall of the wound, the inner wall of the additive in the spray of lead in the long time under high temperature friction attached to the surface of the cylinder, which shows the need to replace the wear ring. Wear-resistant ring (cup) is very important in the cylinder, one is to wear, the second is to eliminate the impact of lateral force. 

Wear will not replace the cylinder will appear black, the main oil seal oil (because it can not effectively eliminate the impact of lateral force caused by the main oil seal variant), pull cylinder and so on. Wear-resistant ring personally recommended nylon to add this material of glass fiber, because the material of the wear-resistant ring of physical properties and bronze material quite, in the wear rate, anti-pull cylinder performance and easy to accommodate metal shavings have a good performance The

Cylinder leakage is rare than the leakage, because the leakage is not easy to be found nothing more. Internal leakage can cause many failures, such as fuel tank weakness, slow, slow cylinder, serious can not work directly, the above situation is also willing to be caused by other parts of the failure.