How to Maintain a Car's Alternator?
2 Answers
When maintaining a car's alternator, attention should be paid to the wear degree of the bearings. There are mainly three steps for alternator maintenance: 1. Choose the correct engine oil. When selecting engine oil, it's essential to know the temperature environment in which the vehicle operates, then purchase oil according to the grade and viscosity required in the vehicle's manual. 2. Don't forget to pack the remaining oil during an oil change. After driving a certain number of kilometers, routine maintenance should be performed, including changing the engine oil and the three filters. Usually, there's a slight surplus after an oil change; remember to pack the leftover oil for future use. 3. Do not mix different engine oils. Sometimes, you might find the oil level in your car is insufficient and needs topping up. In such cases, never add oil of a different brand or specification to prevent oil deterioration.
When it comes to maintaining a car's alternator, based on my years of experience in auto repair, the most crucial aspect is daily prevention. The belt is the first checkpoint—too loose and it slips, leading to insufficient charging; too tight and it damages the bearings. I recommend checking the tension with a tension tool every six months to keep it within the proper range. Next is cleanliness—excessive dust buildup leads to poor heat dissipation, causing the alternator to overheat and fail. Using an air gun to blow out engine compartment dust works well. Don’t overlook checking plugs and wiring; older cars often have corrosion issues—cleaning them and applying anti-rust oil can prevent rust. Also, regularly measure the output voltage with a multimeter—13.5 to 14.5 volts is normal, and deviations indicate problems. Avoid overloading the alternator with excessive use of electronics like sound systems, as it affects battery life too. Make it a habit to get a comprehensive inspection at a professional shop twice a year—it saves money and prevents breakdowns. Keeping the car in good condition ensures smooth driving.
