更换新连杆瓦与曲轴时,两者都是标准尺寸,按理说瓦与轴组装后,其间隙也应在规定范围之内。但事实上常常不是这样:有时曲轴转动不灵活,局部间隙过小;有时间隙过大,或成椭圆形及锥形。其原因除瓦本身制造不合格(如壁厚不等),或因运输、存放不当,使瓦变形外,还有以下原因: Replacement of new connecting rod and crankshaft, both are standard size, arguably tile and shaft assembly, the gap should also be within the specified range. But in fact it is often not the case: sometimes crankshaft rotation is not flexible, the local gap is too small; sometimes the gap is too large, or into an oval and cone. The reasons for the failure of their own manufacturing tile (such as wall thickness), or due to transport, improper storage, the tile deformation, there are the following reasons: