1. There is sliding between the driven plate of the clutch of the mixer truck, the engine flywheel and the clutch pressure plate

例如，有个别驾驶员经常习惯性的把脚放在离合器踏板上，离合器踏板受力后，牵引离合器拉索，使离合器按钮阀受力，造成按钮阀处于不正常的工作状态，放气使离合器助力缸也处于不正常的工作状态，离合器出现了类似半离合的状况。离合器压盘弹簧的压力被部分吸收，发生了离合器打滑，久而久之会造成离合器从动盘摩擦片的磨损过快。

For example, some drivers habitually put their feet on the clutch pedal. After the clutch pedal is stressed, they pull the clutch cable to force the clutch button valve, causing the button valve to be in an abnormal working state. Bleeding makes the clutch booster cylinder in an abnormal working state, and the clutch has a similar semi clutch condition. The pressure of the clutch pressure plate spring is partially absorbed and the clutch slips, which will cause the friction plate of the clutch driven plate to wear too fast over time.

2.操作不熟练

2. Unskilled operation

由于对斯太尔系列混凝土搅拌车的档位不太熟悉，对离合器的结构及车的制动性能了解不，使用离合器过于频繁。如遇到一般的障碍使用气制动就可以处理，但由于对车辆的制动系不太熟悉，而采取了紧急制动。制动后又要重新起步，频繁地使用离合器，造成磨损过快。由于排档不熟练，挂不上档，就再重新分离一次离合器，也会造成使用过于频繁，磨损过快。

Because I am not familiar with the gear of Steyr series concrete mixer truck, I do not fully understand the structure of clutch and the braking performance of the truck, and the clutch is used too frequently. In case of general obstacles, air braking can be used, but emergency braking is adopted because I am not familiar with the vehicle's braking system. Start again after braking and use the clutch frequently, resulting in rapid wear. If the clutch is disengaged again due to unskilled gear shifting and inability to shift, it will also cause frequent use and rapid wear.

3.接合、分离的方法不正确。

3. Incorrect method of joint and separation.

使用离合器，特别是对装有富勒RT11509变速器的车辆，由于油门、排档配合不好，挂档出现齿轮撞击声，由于撞击又重新分离离合器，造成不必要的分离、接合次数增多，磨损加快。操作中，分离时往往很快，接合时又很慢，使离合器在接合过程中滑行的时间加长，磨损加快。

When using the clutch, especially for vehicles equipped with fuller rt11509 transmission, due to the poor matching of throttle and gear, there is a gear impact sound in gear. Due to the impact, the clutch is disengaged again, resulting in an increase in unnecessary separation and engagement times and accelerated wear. During operation, the separation is often very fast and the engagement is very slow, so that the sliding time of the clutch in the engagement process is prolonged and the wear is accelerated.