How to maintain and maintain electric tractor?
Abnormal sound; check the wear of the brush; change the brush as appropriate. 4, check whether the armature rotation is flexible, there is no false wipe phenomenon; check the electrical outlet (or terminal) of the connection is reliable; check all fasteners are fastened; end cover, brush holder must not loose solid. If you want to turn or remove the brush rack, you must mark it properly to loosen the end cap screw. When the brush is reset, align the mark line and tighten the screw so as to keep the brush at the original neutral position. 5 、 brush in the brush grip box should slide freely. The pressure of the constant pressure spring made by the brush shall be normal, and the running area of the brush shall be no less than 80%. The distance from the surface of the brush holder is 2~4mm. 6, check whether the commutators of clean, when necessary, can be soft and lint free cleaning brush commutator of clean cloth and carbon powder on the surface of the commutator groove. If the surface of the oil, white wine can be dipped to wipe (when parking); rough and commutator runout, resulting in uneven surface friction due to brush commutator reached 0.5mm, the car should be light, commutator runout is not greater than 0.04mm, the surface roughness is not greater than 1.6 mu m; commutator insulation shall not be higher than the surface of the commutator, when necessary use planing or milling method, cutting depth is 1mm; the surface of the commutator used for a period of time the pale red, all copper segment of the same color, the surface of the commutator of pale red is a normal phenomenon, copper segment defect is dark.
