1. The charging capacity is too low:
(1) Fault phenomenon: the charging indicator light is on whether the engine is stopped or running.
(2) Cause of failure
①The generator fan belt is too loose, slipping, etc.
②Some rectifier diodes are unsoldered or damaged.
③ Ground the wire from the generator to the regulator.
④The collector ring of the generator is dirty, the brush contact is poor, and the excitation winding is grounded.
⑤ There is a circuit break in the regulator.
2. The load capacity is too large
(1) Fault phenomenon: When the engine is running, the car headlights are particularly bright, which can easily burn out the Zhengzhou bulbs. Used cars can also easily blow fuses and batteries. The electrolyte is consumed too quickly, etc.
(2) Cause of failure: The cause of this failure is pMainly caused by the high voltage setting of the voltage regulator, or it may be a short circuit of the high power tube (output pole) or an open circuit of the voltage regulator tube.
(3) Troubleshooting method: Readjust the voltage regulator or replace the voltage regulator.
3. Unstable load
(1) Fault phenomenon: When the generator is stopped, the charging light is on, but when the engine is running, the light is on and off, or Sometimes it is charged and sometimes it is not loaded.
(2) Cause of failure
①The generator belt is too loose, slips or the pulley is deformed.
②The generator internal wire connector is loose.
③The generator brushes are excessively worn, the elasticity of the brush springs is weakened or broken, and the slip ring of Shijiazhuang used cars has excessive dirt accumulation, etc.
④The connections of the regulatorvoltage are loose and electronic components are shorted or broken.
(3) Fault diagnosis: First check the tightness of the generator belt and whether the pulley is deformed, whether there is any abnormality.
>Good products are not cheap and cheap. the products are not good. Everyone should know this phrase. Today, this Volkswagen Touareg suffered this loss. The Touareg drove normally for the first three days before arriving at our repair shop. There was no battery failure. But just yesterday the car owner got stuck in a traffic jam on an elevated highway and suddenly the car stalled.
How could a good car stall? The car owner told the truth. The car also had this problem a few days ago. Because he was on a business trip out of town, he went to a repair shop ifmile to see what was happening with the car and what was wrong. he. When we arrived at the repair shop, the mechanic told the master that your car's alternator was broken and he needed to replace it. The repairman also told the car owner that a better generator would be more expensive, costing several thousand yuan. If you don't like it, you can replace it with another one from a deputy factory for one thousand yuan. Then the car's owner replaced it with a cheaper car from a factory. It hasn't been used for two weeks until today and it won't restart.