As an indispensable member of the underground operation, the underground loader plays an irreplaceable role. The performance of the loader will directly affect the quality and efficiency of the expired work. In the main operating system of the underground loader, the performance of the transmission in the hydraulic and hydraulic systems will also affect the construction progress and quality of the project. Therefore, it is the work of modern engineering technicians to understand and master its use and maintenance knowledge and troubleshooting technology. For the maintenance method of torque converter of underground loader, we summarize the following points for you:

1.在每班工作结束后，及时检查与井下装载机变速箱有关机件的结合紧固情况，如果有松动，应该及时拧紧。

1. after the end of each shift, check the fastening of the parts related to the gearbox of the underground loader in time. If they are loose, tighten them in time.

2.当每工作100小时后，把变矩器盖上的加油螺帽拧下来，用油位尺检查油面的高度，油面高度应该在油位尺上下刻线之间。在进行测量的时候，拖拉机应该处于水平位置。油量不足的话，应该及时添加。

2. after every 100 hours of operation, unscrew the oil filler nut on the torque converter cover, and check the oil level with the oil level gauge. The oil level should be between the upper and lower scribes of the oil level gauge. The tractor should be in a horizontal position when measuring. If the oil quantity is insufficient, it should be added in time.

3.如果井下装载机的润滑油是齿轮油，要注意保持齿轮油的清洁，油中不应该有机械杂质，否则会加速齿轮的磨损情况。在进行加油时，应该注意加油工具和加油口位置的清洁。

3. if the lubricating oil of the underground loader is gear oil, pay attention to keep the gear oil clean. There should be no mechanical impurities in the oil, otherwise the wear of the gear will be accelerated. When refuelling, pay attention to the cleanliness of the refuelling tool and the position of the refuelling port.

4.每工作500小时左右的时候，应该对变速箱进行清洗，及时更换齿轮油。清洗方法如下：井下装载机工作结束后要趁热放出赃油，然后加入适量的清洁柴油，拖拉机前进、倒退数次之后，放出柴油，再加入干净的齿轮油。注意在不同的季节应该选用不同规格的齿轮油，冬季需要用冬季的齿轮油，夏季需要用夏季的齿轮油。

4. the gearbox should be cleaned and the gear oil should be replaced in time every 500 hours or so. The cleaning method is as follows: after the work of the underground loader is completed, the dirty oil shall be discharged while it is hot, and then an appropriate amount of clean diesel oil shall be added. After the tractor moves forward and backward several times, the diesel oil shall be discharged, and then the clean gear oil shall be added. Note that gear oil of different specifications should be selected in different seasons. Gear oil of winter should be used in winter and gear oil of summer should be used in summer.

除此之外，应该定期检查各处油封和衬垫纸板的密封以及完好情况，必要的时候应该及时更换。在进行更换时，衬垫纸板的厚度应该与原来厚度相同以保证正确的轴向间隙，确保井下装载机可以正常运行。

In addition, the seals and intactness of oil seals and linerboard shall be checked regularly, and they shall be replaced in time if necessary. During replacement, the thickness of the liner board should be the same as the original thickness to ensure the correct axial clearance and ensure the normal operation of the underground loader.

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