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      With the development of the electric forklift industry, we have improved the electric brush of semi electric forklift and all electric forklift, and the whole working surface of the brush should be contacted with the commutator surface. The working surface of the brush should be as smooth as a mirror, and the semi electric stacker must grind the working surface of the newly installed brush to meet the requirements of the commutator surface before running.

      For the needs of the few brush surface grinding, can be used fine glass paper placed between brush and commutator, and then push around sandpaper grinding, if the number of the working surface of many or all of the needs of brush grinding, fine glass paper tape around the available surface of the commutator, sandpaper end overlap with each other, the normal direction of rotation or ground the direction of motor with the same. In fact, for the electric fork truck's grinding brush, when you work on the surface, you can go directly to the whole work surface of the brush. It is forbidden to use rough grinding wheels or emery paper to grind the working surface of the brush so as to avoid the emery sand embedded in the brush and rub the commutator and cause the motor to produce sparks.

     When the electric brush is finished, the toner on the commutator or brush is kept clean, and the motor is carefully blown out with dry compressed air, but it must be noted that the toner is not blown.