自卸式搅拌车的出现和使用，可以为各种类型的工程施工提供许多方便，这些都是自卸搅拌车的功用，在一定程度上提高了设备的使用效率。用户要保证水泥自动搅拌车的使用性能，其中一个重要配件就是变速器换挡机，每一种配件使用一段时间，都会出现一些问题，损坏后该怎么修理呢？
The appearance and use of dump mixer can provide many conveniences for various types of engineering construction. These are the functions of dump mixer, which improve the use efficiency of equipment to a certain extent. Users want to ensure the performance of the automatic feeding mixer, one of the important parts is the transmission shift machine, each part used for a period of time, there will be some problems, how to repair the damage?

1、搅拌车离合器损坏的原因动力换挡变速器离合器接合时，液压油的压力克服弹簧力压紧摩擦片。随着液压油压力的升高，摩擦片与金属盘接触并逐渐压紧，使离合器将飞轮动力平稳地传递到变速器输入轴。

2、搅拌车离合器活塞密封性的检测装载机行走无力或油温过高时，就需要判断是离合器活塞密封不严还是油压不足引起的，但常规检测手段有时很难断定是哪个原因引起故障，尤其是在水泥自动搅拌车无动力的情况下，检查组装好的变速器总成的各密封环就更困难了。此时，可采用气压阀进行测试。
2, automatic feeding mixer truck clutch piston sealing detection loader walking to or when the oil temperature is too high, you need to determine is the clutch piston seal is lax or low oil pressure, but the conventional detection method which is sometimes difficult to determine causes of failure, especially in the case of no power, check the sealing ring of the assembled transmission assembly is even more difficult. At this point, a pneumatic valve can be used for testing.