What is the general lifespan of an automotive alternator?

1 Answers
SanStella
07/25/25 3:20am
The lifespan of an automotive alternator is generally around 15 years. Here are some maintenance measures for automotive alternators: 1. Pay attention to the wear degree of the bearings: If insufficient lubrication is found, a few drops of engine oil can be added from the oil cup port. Be careful not to let it seep into the rectifier, as this may affect the electrical energy transmission efficiency. 2. If the contact surface of the brush is uneven, it can be smoothed with fine sandpaper: If the spring elasticity is insufficient or the brush is excessively worn, new parts must be replaced. If the brush is too short but not damaged, spacers can be inserted into the bracket to ensure a tight fit with the rectifier. 3. The dust-proof ring on the alternator should be secure: It should not be removed or left unused to prevent dust from entering the interior, which could cause mechanical failures.
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