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(1)气缸套严重磨损后,有的机手将气缸套上部出现的台阶用刮刀刮去,然后换上加大尺寸的活塞环,试图增加密封性,解决机油上窜、气体下窜的问题。殊不知这无济于事,因为气缸套磨损很不均匀,易形成两头小、中间大的鼓肚形。即使换上尺寸加大的活塞环,也不能与严重失圆的气缸套内壁贴合严密。正确的方法是:先镗缸,再配以相应尺寸的活塞和活塞环,或更换标准尺寸的气缸套和活塞环。 (2)有的机手唯恐气缸套阻水圈漏水,在其上缠胶布,致使其高出沟槽过多。这样有两点害处,一是安装气缸套时,阻水圈可能被切割,更易漏水;二是气缸套受挤压变形,内径缩小,圆度与锥度增大,造成活塞裙部与气缸套间的间隙变小,甚至出现拉伤。 (3)有的机手为拆卸飞轮方便,在
(1) After serious wear of cylinder liner, some hands scrape off the steps appearing in the upper part of the cylinder liner with a scraper and then replace it with an enlarged piston ring to try to increase the sealing performance and solve the problem of oil channeling and gas channeling . As everyone knows this is of no avail, because the cylinder liner wear is very uneven, easy to form two small, large bulging middle shape. Even put on the size of the piston ring, it can not be severely discord cylinder liner fit closely. The correct way is: first boring cylinder, matched with the corresponding size of the piston and piston ring, or replace the standard size of the cylinder liner and piston ring. (2) Some fear of leakage of air cylinder liner liner, tape wrapped in cloth, resulting in its excess of grooves above. This has two disadvantages, first, when installing the cylinder liner, the water blocking ring may be cut, easier to leak; Second, the cylinder liner by extrusion deformation, reduced diameter, roundness and taper, resulting in piston skirt and cylinder liner Gap smaller, or even strain. (3) some hands to disassemble the flywheel convenient, at