What are the signs that indicate a generator belt needs replacement?
2 Answers
Generator belt failure precursors include: squeaking noises before breakage, indicating belt slippage or continuous friction at a certain point; visible cracks and shallow grooves on the belt prior to snapping; slippage phenomena suggesting near-complete wear in the pulley groove. When aging reaches a critical stage, the belt hardens and develops numerous surface cracks, necessitating replacement. Below is an introduction to automotive engines: Engine classification: Based on power sources, they are categorized into diesel engines, gasoline engines, electric vehicle motors, and hybrids. Engine principles: Common gasoline and diesel engines are reciprocating piston internal combustion types that convert fuel's chemical energy into mechanical piston motion to deliver power. Gasoline engines feature higher RPM, lighter weight, quieter operation, easier starting, and lower manufacturing costs; diesel engines offer greater compression ratios, higher thermal efficiency, and superior fuel economy and emission performance compared to gasoline engines.
I noticed the alternator belt was about to fail, and there were quite a few obvious signs. Back when I used to drive long distances, I often heard a squeaking sound from the engine compartment, like a bird chirping, and didn’t pay much attention to it. But the noise kept getting louder, especially during cold starts or on rainy, damp days. Later, when I took the car for repairs, the mechanic pointed out that the belt had many fine cracks on the surface and was flaking, feeling dry and stiff to the touch. This belt is connected to the alternator—if it wears out, the charging warning light might suddenly come on, the battery won’t charge, and the car stalling would be a real hassle. Once, I forgot to replace the belt, and while driving, the air conditioning started blowing weakly. It wasn’t until I dragged the car to the shop for a new belt that the issue was resolved. Now, every time I service the car, I check the belt’s condition. If there are too many cracks or the tension isn’t right, I replace it immediately to avoid a breakdown.
