目前绝大多数机动车采用齿轮式变速箱，这种变速箱的一个常见故障便是脱档（又叫跳档）。引起变速箱脱档的原因是多方面的，例如齿轮磨损、轴承松旷、输人怕与输出轴不同心或前后窜动、操作机构变形、锁定装置失效等等。要查找机车发生脱档的原因，需在行车途中留心观察脱档是 At present, the vast majority of motor vehicles using gearbox transmission, a common failure of this gearbox is off (also known as jump files). Gearbox gearbox caused by many reasons, such as gear wear, bearings Kuang Kuang, people are afraid of the output shaft is not the heart or before and after the move, the deformation of the operating mechanism, locking device failure and so on. To find out the reasons for the departure of the locomotive, the need to look carefully at the traffic off the gear is