When we are driving, we usually step on the brake in case of emergency. I'm afraid it's a sudden brake failure, and the danger is unpredictable. The concrete mixer has high requirements for vehicle performance, so the brake pad is also the focus of inspection. Generally, we use the following three methods during self inspection.

一、看厚度：一个新刹车片厚度一般在1.5cm左右，随着使用中不断摩擦厚度会逐渐变薄。的技术人员建议，当肉眼观察刹车片厚度已经仅剩原先1/3厚度(约0.5cm)左右时，司机就要增加自检频率，随时准备更换了。当然个别车型由于轮毂设计原因，不具备肉眼查看的条件，需要拆卸轮胎才能完成。每个刹车片的两侧都有一个突起的标志，这个标志的厚度在两三毫米左右，这也是刹车盘薄更换的极限，如果刹车片厚度已经与此标志平行，则必须要进行更换。因此当刹车片厚度接近此标志的时候，司机就要随时观察准备了，不过在不拆卸轮胎的情况下通过肉眼很难准确观察，目前不少车型在刹车片过薄时仪表手刹灯位置会有所提示，相对自检就方便一些。

1、 Look at the thickness: the thickness of a new brake pad is generally about 1.5cm. With the continuous friction in use, the thickness will gradually become thinner. Professional technicians suggest that when the thickness of the brake pad is only about 1 / 3 of the original thickness (about 0.5cm) by naked eye observation, the driver should increase the self inspection frequency and be ready to replace it at any time. Of course, due to the wheel hub design of individual models, they do not have the conditions for visual inspection, so they need to remove the tires to complete. There is a raised sign on both sides of each brake pad. The thickness of this sign is about two or three millimeters, which is also the limit for replacing the thin brake disc. If the thickness of the brake pad has been parallel to this sign, it must be replaced. Therefore, when the thickness of the brake pad is close to this sign, the driver should be ready to observe at any time. However, it is difficult to observe accurately with the naked eye without removing the tire. At present, the position of the instrument hand brake light will be prompted when the brake pad is too thin in many models, which is more convenient for self inspection.

小建议：混凝土搅拌车刹车片根据用车环境和开车习惯没有严格的更换间隔，一般在行驶六万左右就要考虑更换。

Small suggestion: there is no strict replacement interval for the brake pads of concrete mixer according to the vehicle environment and driving habits. Generally, replacement should be considered when driving about 60000 kilometers.

当肉眼观察发现混凝土搅拌车刹车片较薄时应当在保养时要求技术人员进行检查，因为肉眼观察本来就会存在误差，的维修站通过卡尺要比肉眼观察更严谨一些。

When the brake pad of concrete mixer truck is found to be thin by visual observation, technicians should be required to check during maintenance, because there will be errors in visual observation, and the caliper of professional maintenance station is more rigorous than visual observation.

二、当混凝土搅拌车的刹车片变薄时我们的刹车效果会受到影响，此时需要更深的踩下制动踏板才能达到原先轻踩就能达到的制动效果，前半程制动效果明显减弱，很多人感觉自己的混凝土搅拌车刹车变软，有点刹不住了，此时就要检查混凝土搅拌车刹车片是否需要更换了。

2、 When the brake pad of the concrete mixer becomes thinner, our braking effect will be affected. At this time, we need to step down the brake pedal deeper to achieve the braking effect that can be achieved by light stepping. The braking effect in the first half of the journey is significantly weakened. Many people feel that the brake of their concrete mixer becomes soft and can't stop, At this time, it is necessary to check whether the brake pad of the concrete mixer needs to be replaced.

三、听声音：如果在轻点搅拌车刹车的同时伴随有“铁蹭铁”的丝丝声，此时刹车片必须立即更换。因为混凝土搅拌车刹车片两侧的极限标识已经直接摩擦刹车盘，证明刹车片已经超过极限。

3、 Listen to the sound: if there is a silky sound of "iron rubbing iron" while gently braking the mixer, the brake pads must be replaced immediately. Because the limit marks on both sides of the brake pad of the concrete mixer have directly rubbed the brake disc, it proves that the brake pad has exceeded the limit.

小型搅拌机遇到这种情况，在更换刹车片的同时要配合搅拌车刹车盘的检查，出现这种声音时往往搅拌车刹车盘已经受到损坏，此时即便更换新的刹车片仍然不能响声，严重时需要更换刹车盘。

When a small mixer encounters this situation, it is necessary to cooperate with the inspection of the brake disc of the mixer truck while replacing the brake pad. When this sound occurs, the brake disc of the mixer truck is often damaged. At this time, even if the new brake pad is replaced, the sound still cannot be eliminated. In serious cases, the brake disc needs to be replaced.