"A good knock will come out," joke automotive mechanics, when they can not immediately determine the cause of extraneous noise in the machine.
But to endure, even being in the cabin, as piercing whistles under the hood, it is impossible.
Why can a new generator belt whistle?
What is this strap for?
Belt of the generator connects the generator of the carWith the crankshaft of the engine. During engine operation, when the shaft rotates, its rotation by this belt is transmitted to the rotor of the generator. The generator generates a direct current, distributes it on all systems of the car and simultaneously conducts a constant recharging of the storage battery. In the event of a belt rupture, the generator stops its work on supplying power to needing systems, including air conditioning, the battery is soon discharged, and the car loses its ability to move.
On some models (for example, on domesticAuto) the same belt rotates and the fan motor fan blades. Therefore, the rush of the belt is fraught with a momentary overheating and boiling of the cooling liquid.
Where does the whistle come from?
If you, while sitting in the lounge, hear while drivingThin on one note squeak or whistle, then it is most likely whistled the generator belt. The belt passes through pulleys, mounted on the shafts of the engine and the generator. The belt is made of synthetic materials, pulleys are made of metal. Their contact at the moment of slippage and causes such a kind of non-metallic sound.
Why whistles and what to do?
The first thing that comes to mind when he whistlesBelt, its extreme wear and tear. Yes, this is a probable cause. Razoholmachenny, he can whistle during rotation. In this case, the belt must be replaced urgently. A little more, and it will burst.
Always keep a spare strap in the trunk.Generator of your approved manufacturer. Obtained by forced or someone suggested in a hopeless minute belt may simply not be suitable for your car.
But the whistle can appear and at quite suitableBelt. Most often - it is weakened by its tension, resulting in the belt begins to slip and make a whistle. Tighten the belt by loosening the fixing nut and pushing the generator aside. On some cars this is done with the help of a tension roller.
If the necessary tension can not be achieved, then the belt has already stretched to the limit and it should be changed.
Finally, the cause of the whistle can beSlippage of the belt due to oil, antifreeze or other technical liquids on the pulleys. Carefully wipe the belt and pulleys and eliminate the possibility of contamination with foreign substances.