The maintenance of construction machinery used in motor brush?

(1) brush label shall comply with the working characteristic of motor,shall not be used on 1 electric motor brush two different symbols.(2) there should be no shaking of the brush in the brush and stagnation phenomenon,brush and brush holder should 220v electric motor be 0.10 ~ 0.20 mm gap between brush edge to the slip ring or distance on the surface of the commutator with 2 ~ 4 mm advisable.(3) the brush and the connection of copper braid,the connection of copper braid and brush holder shall be ensure good contact perkins diesel generator and secure. Copper braid shall not and motor rotational part to touch or touch shell grounding.(4) the brush on the slip ring or commutator pressure numerical should comply with the regulations of brush label and manufacturing plants,or adjust to the lowest pressure,no sparks in general is 0.15 ~ 0.25 KGF/cm~2 (5) brush wear IE2/IE3 electric motor degree,shall not be more than two-thirds of the original standard height.(6) after brush wear,should be replaced by the original label,and will contact with glass sand,make www.dongfeng-motor.com the contact area of not less than 75%.