The hydraulic oil used in the mine loader is bright, light colored and transparent when observed in a clean mineral water bottle. Good hydraulic oil does not turn black or white, so what will cause it if it changes color?

1、新的矿用装载机在设备磨合时会产生大量的铁屑，不知你换油的时候是否将油箱中的液压油全部清空，并用新油循环循环系统后，将油箱全部用棉布擦拭干净后再加新油，如果没有，就可能有大量铁屑残留在油箱中，也会导致新油被污染而发黑。

1. The new mining loader will produce a large amount of iron filings during equipment running in. I wonder if you empty all the hydraulic oil in the oil tank when changing the oil, and after using the new oil circulation system, wipe all the oil tank with cotton cloth and add new oil. If not, a large amount of iron filings may remain in the oil tank, which will also lead to the pollution and blackening of the new oil.

2、有可能是泵的高速旋转而产生的磨屑，关于和泵旋转的所有部件你都要考虑到，比如轴承、容积室等的磨损；

2. It may be the wear debris generated by the high-speed rotation of the pump. You should consider all parts rotating with the pump, such as the wear of bearings, volume chambers, etc;

3、检查一下液压系统是否封闭，呼吸孔是否完好；检查设备液压部分外露部件，看密封是否完好，比如油缸的防尘圈等。如果油品做颗粒度试验符合清洁度要求，可以排除是粉尘污染。可以肯定的说是液压油的温度较高引起的。此时应换用高品质的液压油，检查回油滤芯，散热油路，重要的是液压油的散热器，平时要按照规定保养维护。

3. Check whether the hydraulic system is closed and whether the breathing hole is intact; Check the exposed parts of the hydraulic part of the equipment to see whether the seal is intact, such as the dust ring of the oil cylinder. If the particle size test of the oil meets the cleanliness requirements, dust pollution can be eliminated. It is certain that it is caused by the high temperature of hydraulic oil. At this time, high-quality hydraulic oil should be replaced, and the oil return filter element and heat dissipation oil circuit should be checked. The important thing is the radiator of hydraulic oil, which should be maintained according to the regulations at ordinary times.

4、液压系统黑油的不仅仅是有粉尘引起的，也是由于加注黄油不规范造成的。

4. Black oil in hydraulic system is not only caused by dust, but also caused by nonstandard filling of butter.

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