(1) Loose V-belt drive (2) Poor contact of carbon brush, yoke contaminated with oil (3) Damage to regulator (4) Battery electrolyte level too low or serious vulcanization, excessive aging
(1) Adjust V-belt tension (2) Brush adjustment, slip ring cleaning (3) Replacement regulator (4) Adding electrolyte to the specified level, in case of serious sulfonation of the pole plate does not have the ability to restore the capacitive battery, it must be replaced