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一辆丰田客车,一星期内曾有过蓄电池出水、灯泡烧毁等现象,后来又发现充电指示灯常亮不熄,且出现蓄电池放电故障。 根据故障现象说明充电系统发生故障。维修人员在发电机电枢接触和导线之间串入一个30A电流表,另取一火线加至发电机的“F”接线柱,起动发电机并中速运转,电流表指示充电,说明发电机正常,再把线路重新接好,用试灯测试电枢接线柱,试灯无亮光,顺线查找发现电枢线已烧断,将其接复后,测试发电机的充电电流,发现怠
A Toyota bus, a week had a battery of water, light bulbs burned and so on, and later found that the charging indicator light does not extinguish, and the battery discharge failure. According to the symptoms of charging system failure. Maintenance personnel in series between the armature contacts and wires into a 30A ammeter, and the other to take a line of fire added to the generator “F” terminal, start the generator and running at a moderate speed, the ammeter indicates charging, indicating that the generator is normal, and then Reconnect the circuit, the test lamp test armature terminal, the test light no light, find the armature line was found to be blown down, the recovery of the test generator charging current, and found lazy