As long as the new small concrete mixer is regularly maintained for the first two years, there will basically be no problem. When the small concrete mixer is used for more than two years, some easily worn parts will not be replaced regularly. What parts need to be replaced irregularly? Let's introduce:

1、不定期的更换发动机润滑油

1. Replace the engine lubricating oil irregularly

一般情况下，厂家会要求用户在行驶5000-1.5万的时候更换润滑油，而增压小型混凝土搅拌车发动机车型则要求在行驶5000的时候更换，如果小型混凝土搅拌车不怎么开或者一直处于停驶状态，每半年更换一次机油。当然，如果司机所处的环境以及油品质量都还不错，可以适当的延长换油周期和时间。

The oil is changed every half a year when the small mixer is driven for - 50000 kilometers, but the user usually requires the engine to be changed every half a year when the mixer is driven for - 5000 kilometers. Of course, if the driver's environment and oil quality are good, the oil change cycle and time can be appropriately extended.

2、不定期更换机油滤芯

2. Replace the oil filter element irregularly

机油滤芯的作用就是过滤杂质，因此要与机油一同更换。如果不更换的话，机油得不到过滤从而导致小型混凝土搅拌车发动机内部零件因机油中的杂质加速磨损。

The function of the oil filter element is to filter impurities, so it should be replaced with the oil. If it is not replaced, the oil cannot be filtered, resulting in accelerated wear of internal parts of small concrete mixer engine due to impurities in the oil.

3、不定期更换空气滤芯

3. Replace the air filter element irregularly

如果滤芯阻塞严重，将使进气阻力增加，小型混凝土搅拌车发动机功率下降。同时由于空气阻力增加，也会增加吸进的汽油量，导致混合比过浓，从而使小型混凝土搅拌车发动机运转状态变差，增加燃料消耗，也容易产生积炭。平时应该养成经常检查小型混凝土搅拌车空气滤清器滤芯的习惯。

If the filter element is blocked seriously, the air inlet resistance will increase and the engine power of small concrete mixer will decrease. At the same time, due to the increase of air resistance, it will also increase the amount of gasoline absorbed, resulting in excessive mixing ratio, which will worsen the running state of small concrete mixer engine, increase fuel consumption and easily produce carbon deposition. At ordinary times, the habit of checking the air filter element of small concrete mixer truck should be formed.

4、不定期更换刹车油

4. Replace the brake oil irregularly

刹车油有一个特点就是会吸收空气中的水份，而小型混凝土搅拌车刹车液压系统要让刹车油与大气相通才能正常运作，久而久之刹车油就会吸入水份，在高温下转成气泡，当小型混凝土搅拌车刹车油路中出现气泡，刹车效能就会下降。所以刹车油是要根据气候、运行环境、季节变化及工况等及时检查其质量性能按时更换的。

One characteristic of brake oil is that it will absorb water in the air. The brake hydraulic system of small concrete mixer truck can operate normally only if the brake oil is connected with the atmosphere. Over time, the brake oil will absorb water and turn into bubbles at high temperature. When bubbles appear in the brake oil circuit of small concrete mixer truck, the braking efficiency will decline. Therefore, the quality and performance of brake oil should be checked and replaced on time according to the climate, operating environment, seasonal changes and working conditions.

一般建议：每两年或者行驶5万的时候更换，而在选择和更换刹车油的时候也要切记：不同类型的刹车油不要混合使用。由于配方不同，混合刹车油会造成刹车油指标下降。

General recommendation: replace it every two years or when driving 50000 kilometers, and remember when selecting and replacing brake oil: do not mix different types of brake oil. Due to different formulations, mixed brake oil will reduce the index of brake oil.

5、不定期更换防冻液

5. Replace the antifreeze from time to time

防冻液长时间不换，其中的防腐、防锈和防垢功能将会降低，这样会造成小型混凝土搅拌车冷却系统故障甚发生锈蚀。一般来说，防冻液一般每1.5年-2年更换一次。

If the antifreeze is not changed for a long time, the functions of anti-corrosion, anti rust and anti scaling will be reduced, which will cause the failure or even corrosion of the cooling system of small concrete mixer. Generally speaking, the antifreeze is generally replaced every 1.5-2 years.

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