一台ZL40型装载机在工作中变速器有异响,响声随着工作负荷的大小而变化。经检查,油液的油量和质量均符合规定。在齿轮、轴承和花键轴所在部位可以听到清脆的“咯噔、咯噔”声。修理记录显示,曾因输出轴孔座人为损坏而焊接过,初步判断故障原 A ZL40 loader at work, the transmission has abnormal sound, the sound changes with the size of the workload. After inspection, the oil quantity and quality are in line with the provisions. In the gear, bearings and spline shaft where you can hear the crisp “slightly 噔, slightly 噔 ” sound. Repair records show that once due to the output shaft hole man-made damage and welding, the initial judge fault