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曲轴曲轴两主轴颈内端而距离应为100±0.075毫米。距离过大时,主轴承兽装上后,曲轴轴向间隙极小或无轴向间隙,这时可用增加主轴承盖纸垫的办法调整曲轴轴向间隙;距离过小时,曲轴轴向间隙过大,这时可通过在两主轴瓦台肩下增添适当厚度的铜皮或纸垫的方法解决。曲轴连杆轴颈之间的开裆应为30~(+0.1)毫米,曲柄与连杆轴颈连接处的圆弧应为R5~(-0.5)毫米。若连杆在曲轴上试装时不能转动,除了连杆瓦孔径过小需刮瓦外,还可能因开裆尺寸过小,也可能开裆边缘有毛刺或轴颈外圆弧过大所致。这时可装上连杆盖在曲轴连杆轴颈上试转,连杆盖装上时的方向与总装时相同。若连杆盖不能转动,可观察连杆盖与曲轴连杆轴颈处的R值是否过大。若过大,可锉削连杆平面与倒角处
Crankshaft crankshaft two inner journals and the inner end of the distance should be 100 ± 0.075 mm. The distance is too large, the main bearing after the animal, the crankshaft axial clearance is minimal or no axial gap, then increase the main bearing pad paper pad way to adjust the crankshaft axial clearance; the distance is too small, the crankshaft axial clearance too Large, then by the two bearing pads under the shoulder to add the appropriate thickness of copper or paper pad solution. The opening between crankshaft connecting rod journal should be 30 ~ (+0.1) mm, and the arc between crank and connecting rod journal should be R5 ~ (-0.5) mm. If the connecting rod on the crankshaft when the test can not be rotated, in addition to the connecting rod shrapnel needs too small aperture, but also may be due to open the crotch size is too small, may also open the edge of the crotch or jagged outer cylindrical arc too large due . At this time can be fitted on the connecting rod cover crankshaft connecting rod trial rotation, connecting rod cover when installed in the same direction and the assembly. If the connecting rod cap can not be rotated, observe whether the R value at the connecting rod cover and crankshaft connecting rod journal is too large. If it is too large, you can cut the connecting rod plane and chamfering