检查电刷磨损情况，及恒力弹簧是否变形，电刷磨损过多或恒力弹簧已变形予以更换。
Check the wear of the electric brush and see whether the constant force spring has distorted or not. Over-worn electric brush and distorted force spring should be replaced.
针对客车风扇电机电刷磨损快，使用寿命低的问题，提出一种实用新型小功率逆变驱动系统。
A novel small power inverter-fed induction-motor drive is present, concerning the fast wearing and tearing of the train fan motor and low life of it.
调换电刷：电刷磨损到不能使用时应立即调换，否则会损坏换向器，严重时更容易导致烧坏电机。
Replacement brush: brush wear should not be used to change immediately, otherwise damage the commutator, more easily cause serious electrical burn.
进口汽车的曲轴价格昂贵，磨损后在没有配件的情况下可采用电刷镀技术来修复。
Since a spare part of crankshaft of an imported motor vehicle is very expensive, a worn crankshaft can be rehabilitated by brush-plating if there is no spare part.
应及时更换已磨损到位的电刷，及时清除机器灰尘、杂物等。
Replace timely worn or damaged electric brush. Remove timely dusts, small pieces and etc.
应及时更换已磨损到位的电刷，及时清除机器灰尘、杂物等。
Replace timely worn or damaged electric brush. Remove timely dusts, small pieces and etc.
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