轴向间隙大小的判断 4125型柴油机的曲轴在安装时都留有0.05～0.25毫米的轴向间隙。当轴向间隙过大时,曲轴就会发生轴向窜动,主要表现在发动机工作时,伴有“咯噔、咯噔”的沉闷敲击声。特别是在进行田间作业,负荷突然变大或突然增加转速时,响声更为明显;分离离合器时,响声又会减弱甚至消失。维修时拆下油底壳,顺轴向撬动曲轴,即可用厚薄规在曲柄臂与 Judgment of the size of the axial clearance 4125 diesel engine crankshaft left in the installation of 0.05 to 0.25 mm axial clearance. When the axial clearance is too large, the crankshaft will occur axial movement, mainly in the engine work, accompanied by “slightly, slightly ” dull percussion sound. Especially in the field operations, a sudden increase in load or sudden increase in speed, the sound is more obvious; separation clutch, the sound will be weakened or even disappear. Remove the oil pan during maintenance, lean the crankshaft along the axial direction, you can use the thickness gauge in the crank arm and