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经验法判断轴瓦间隙 当小柴油机工作有异响,怀疑轴瓦间隙过大时,可用以下方法粗略地加以判断;使小柴油机达到正常温度,拧下气门罩盖上的机油压力指示头罩盖,把发动机转速控制在1300—1500转/分,用拇指压下红指示头。如果以较小的拇指力能慢慢压下,说明此时的敲击声是由于主轴瓦或连杆轴瓦与轴颈的配合间隙过大而引起的,如果以较小或较大的拇指力都无法压下红指示头,说明此时的敲击声是其它部位引起的。
Judgment of the bearing shell clearance experience When a small diesel engine has abnormal sound, bearing clearance is too large, you can use the following method to roughly determine; make small diesel engine to normal temperature, unscrew the valve cover oil pressure indicator hood, the Engine speed control at 1300-1500 rev / min, with the thumb down the red head. If you can slowly depress with a small thumb force, indicating that the percussion sound at this time is due to the main bearing bush or connecting rod bearing bush with the gap caused by too large, if the smaller or larger thumb force Can not depress the red indicator, indicating that the percussion is caused by other parts at this time.