我们有一台东方红-54推土机,小修时检修了变速箱、后桥等部位。试车时发现:当推土铲加负荷(吃土)时,动力输出轴手柄自动向后跳为空档,推土机不能正常工作。什么原因呢?打开后桥上盖,使爪式联轴节滑套前移至正常挂上档位置,发现它与爪式联轴节没有接合,间隙较大。用手前后推拉爪式联轴节,有显著的移动量。根据以上异常情况,又打开变速箱盖,发现原来 We have a Dongfanghong-54 bulldozer, minor repairs to the gearbox, rear axle and other parts. Test found: when the bulldozer plus load (eat soil), the power output shaft handle automatically jump back to neutral, bulldozers can not work properly. What are the reasons? Open the rear axle cover, the claw coupling sleeve to move forward to the normal file position and found it did not claw coupling joints, the gap larger. Before and after pushing the claw coupling hands, there is a significant amount of movement. According to the above anomalies, and opened the gearbox cover and found the original