The operation of cars, both domestic and foreign, is sometimes accompanied by an unpleasant whistling sound. The generator drive belt whistles. This phenomenon occurs more often in cold or rainy weather, when the engine is not warmed up.
It is possible to operate such a vehicle, but the whistle means that the drive is slipping on the pulleys without rotating the generator shaft. Accordingly, the battery does not receive the necessary charge.
The problem may be caused by other, more serious reasons. Why does the alternator belt whistle? What is the problem and what needs to be done to fix it?
Reasons for whistling
The cause of the whistling may be hidden both in the belt itself and in nearby units. When a car owner asks for help, it often turns out that the generator is whistling.
Belt faults
There may be several reasons why the VAZ-2110 alternator belt whistles. However, the first place in terms of frequency of occurrence is the wear and tear of the material from which it is made. The rubber stretches, loses its shape, and begins to slip. 
Diagnostics is carried out visually, based on the degree of belt tension. If it sags and can be easily turned by hand (while the pulleys remain motionless), then the cause of the malfunction can be considered found.
In addition to the above, the belt drive whistles when the pulleys are oiled. This usually happens on older engines, where oil seeps through seals and gaskets. The generator drive on Priora and other VAZ models is not geared. Therefore, it easily slides over oily surfaces. Diagnosis is carried out visually.
The drive may not whistle constantly, but periodically whistle for some time after a cold start in winter. In general, if the situation returns to normal after warming up, no intervention is required. The fact is that the rubber from which the element is made becomes hard in the cold and does not adhere tightly to the surfaces of the pulleys. As it warms up, it takes on a working form and the whistling stops.
Generator faults
The problem with the whistling of the VAZ-2107-VAZ-2101 generator and the entire front-wheel drive line of cars usually lies in a collapsed front cover bearing. In this case, both the bearing itself and the belt slipping along the jammed pulley can make noise. The malfunction is determined “by eye”. 
In some cases, alternator drive slippage may be caused by a misaligned alternator pulley or crankshaft pulley. The belt begins to move at an angle, touching the side surfaces. At the same time, it will even whistle new belt generator A breakdown can be determined by severe wear on the belt drive. The drive “eats” on the sides.
Possible repairs
What to do in this situation? The solution depends on the identified malfunction. A loose drive should be tightened. Kalina cars and other front-wheel drive VAZA models have a tension bolt that allows you to adjust the degree of belt tension.
To carry out the manipulation, loosen the fastening bolts, then tighten the adjustment bolt a few turns, achieving optimal tension. A correctly tensioned drive should bend no more than 1 cm under hand pressure. If this cannot be achieved even with the bolt tightened to maximum, the belt should be replaced.
If the pulleys become oily, the drive should be removed and wiped inner side alcohol or gasoline. Pulleys are cleaned in the same way. If the belt has been in an oily state for a long time, it is recommended to replace it, since fuels and lubricants destroy rubber. also in mandatory current seals and gaskets are changed.
In cases where the alternator belt whistles “when cold,” repair is not required. It is permissible to slightly increase the belt tension. However, if the whistling noise disappears after warming up, this is not necessary.
If, as a result of diagnostics, it was revealed that the front bearing of the generator is whistling, it is replaced. To do this, remove the unit from the car, dismantle the front cover and, after removing the faulty bearing, press in a new one. This is also done when the pulley is skewed and the generator shaft is jammed. 
Prevention
You can prevent slipping of the generator drive by timely checking and correcting its tension level, replacing the belt if there is damage or severe wear.
It is important to monitor the condition of the engine seals and the cleanliness engine compartment. At the first sign of wear on the generator bearing, it is necessary to replace it.
It is not uncommon for a VAZ 2110 car to experience a whistle in the V-belt connection of the generator. For this reason, it needs to be tightened or completely replaced. Today we will talk in detail about the tightening procedure, and also tell you how it changes.
Why does the whistle occur?
There are several reasons why the characteristic whistle-like sound occurs.
- Weak tension. The element slips, and this happens most actively at night. The increased intensity of the whistle at night is explained by the fact that the generator additionally works for lighting.
- Gradually the component is destroyed. The belt can dry out, causing its structure to be disrupted and it literally crumbles into pieces. The first signs are cracks, and then whole pieces break off. When moving, the pulley hits and slipping begins. Only replacement is required here.
- Although moisture gets on the belt very rarely and evaporates almost immediately, the connection can still whistle. In this situation, tension is required.
- The generator itself jams.
Dimensions
It is quite possible that you have selected the wrong alternator belt size for your 16 valve VAZ 2110. This often causes whistling. The correct size of the alternator belt for the 8 valve VAZ 2110 should be determined in advance, even before going to the auto parts store.
The sizes are different, and they are individual for each VAZ model.
If we talk specifically about the “ten”, then adhere to the following rules for choosing a belt size:
- In the absence of air conditioning and power steering, 742 millimeters is suitable;
- If the car is equipped with a hydraulic booster, then the size will be 1115 millimeters;
- If an air conditioner is also present, then optimal size- 1125 millimeters.
Some craftsmen regularly use original belts from other AvtoVAZ models - Priora and Kalina - to replace them when repairing their "ten".
Performing tension
If there is no wear on the V-belt drive, but there is a whistle, first of all, check the tension level. We will not use complex terminology, but will simply advise you to press with some force on the belt in the middle.
If the tension is done correctly, then the belt will bend no more than 8 millimeters. If the deflection is greater, then the element will have to be tensioned, and if it practically does not deflect, the tension will have to be loosened.
The problem is not the whistling. Because of weak tension The battery does not charge effectively, and the drive itself begins to wear out faster. Excessive tension can lead to damage to the alternator bearings and stretching of the belt.
Correct tension of the VAZ 2110 generator belt is performed as follows:
- Loosen the generator from the bottom and top. A nut is used for this;
- Turn the adjusting bolt and adjust the belt;
- If you want to increase the tension, the bolt is turned to the right. Thus, you move the generator away from the cylinder block;
- To loosen the tension, move in the opposite direction - to the left;
- Use a wrench to grab the mounting bolt and turn it a couple of turns. crankshaft, then check the tension;
- If all is well, the tension is correct, the nut can be tightened back.
We have already figured out how to tighten the alternator belt. But such measures are not always relevant. If the element is cracked, overstretched and no longer tensioned, then there is nothing left to do but replace it with a new one.
In fact, replacement cannot be called a complex procedure. Follow the instructions and everything will work out.
- Slightly loosen the bolt nut from the lower mounting of the car generator, as well as the tension nut.
- Further loosen the tension on your belt. You already know how to do this from the previous section, where we talked about tensioning the alternator belt.
- Move the generator to the side power unit, which will allow you to remove the belt from the pulleys crankshaft and a generator.
- The next step is to install a new element. To do this, you will need a high-quality belt purchased from a trusted store. What exactly this part will be, and what size it will be, is not difficult to determine. But quality comes first.
- First, the belt is put on the crankshaft pulley.
- Now it goes to the generator pulley.
- At the last stage, you have to repeat the tension adjustment procedure. You already know very well how this procedure is carried out, so there should be no problems.
As practice shows, many experienced drivers VAZ 2110, which have been driven by this particular model for many years now, are carried with them in the trunk extra belt generator
This is due to the fact that its breakdown can occur at the most inopportune moment. This node cannot be called the most weak point"tens", but problems may arise with it. And it is better for you to be prepared for such a situation.
Otherwise, you will have to call a tow truck and go to the nearest station Maintenance, pay a lot of money for the services of masters. Although if you have a spare alternator belt and standard set tools, if it breaks, you would spend literally a couple of tens of minutes and calmly continue driving with a new belt. Because the choice is always yours!
During operation vehicle the motorist faces various troubles. So, over time, the steering wheel begins to play and the suspension begins to knock. Sometimes it whistles. Why does this happen? This problem can catch a motorist at the most inopportune moment. Well, let's look at why the alternator belt whistles on the Kia Rio (sedan) and other cars.
Belt characteristics
First, let's look at what this element is responsible for. As you know, it is often used in a car. Thanks to it, correct gas distribution is carried out (if we are talking about the timing unit), the operation of the hydraulic booster, air conditioning and generator.
Maintaining optimal voltage in the on-board network is the key to the health of any car. This is why it is so important to keep your generator in working order. The part itself is reliable. However, the alternator belt may whistle. Why is this happening? The fact is that the element loses adhesion to the crankshaft pulley. And this can already happen for various reasons. Let's look at which ones below.
Natural wear and tear
As you know, this element is subject to heavy loads. Therefore, it must be durable and at the same time elastic. The generator belt is made of rubber with a reinforcing filler. The service life of this product is 60 thousand kilometers. Of course, the resource directly depends on the load on the generator. But if there is a whistle from the engine compartment, it is worth remembering how long you have not changed this element. Remember that over time the belt loses its quality.
By the way, judging by the reviews, the most durable and hardy is This element has the shape of a trapezoid when cut. This allows it to withstand heavy loads. However, the mechanism is not designed for reverse bending. Therefore, it is not used on all cars.
Cleanliness of parts
Few people know that the engine compartment also needs to be washed periodically. Moreover, this is not done for aesthetic pleasure. The fact is that when heavily soiled, the belt drive loses grip with the pulley. A characteristic whistle begins. In addition, dust particles act as an abrasive inside. As a result, the question arises: “Why is the new alternator belt whistling?” But it’s not just dust that can contribute to this problem.
If the engine gasket leaks oil, it may spray onto the crankshaft pulley. As a result, the belt loses its rigid adhesion to the shaft. The clanging and whistling begins. This is why it is so important to keep the engine compartment clean. By the way, after washing you can find traces of oil leakage. This will allow you to timely diagnose a breakdown of the gasket or oil seal and fix the problem.
Bearing
This element can also cause a whistle. Why does this mechanism fail? As with all bearings, the lubricant can be washed out here, which compromises the integrity of the race. Moreover, it is impossible to determine the cause externally.
The bearing will be like new. But as soon as it starts working (that is, starts rotating), you will hear a characteristic noise. This element is non-removable and cannot be repaired. If it fails, only replacement will help.
Tension
This is perhaps one of the most common reasons why the alternator belt whistles on the VAZ-2110 and other domestic cars. Owners of foreign cars are not immune from this problem. Whistling can occur for two reasons. This is a very weak or too tight belt tension. Moreover, the problem may disappear and appear again. So, if the belt is tightly tightened, the whistle will occur only in the cold season. As soon as the engine warms up, the belt regains its shape and the sound stops. But this does not mean that you can continue to drive with such a problem. This significantly reduces the life of the belt and bearing.
Correct pulley line
This is another reason why the alternator belt whistles. This problem also happens on Priora. So, when there is a whistle, it is worth checking the alignment of the upper and lower pulleys. They must be on the same level. Even with a slight slope, the contact patch is reduced several times. The mechanism will emit a characteristic squeak.
How to tighten?
Checking the tension level without tools is quite simple. So, if you press your finger on the middle part of the belt, it should bend by 6-8 millimeters. If the element is tight or too tight, the situation needs to be corrected. Let's look at how to do this using an example front wheel drive cars VAZ.
So, we will need ring wrenches “17” and “19” (or better yet, with a ratchet and a head). The setup process takes no more than ten minutes. So, let's get to work. First you need to unscrew the mounting nut that secures the generator and bracket on top. Next, unscrew the same nut at the bottom. It is enough to loosen it a few turns. If you need to tighten the element, you should grab the alternator and pull the belt away from you. Next, tighten the corresponding nuts and check the tension level. If the belt is too tight and needs to be loosened, we perform a similar operation. However, here we need to pull the generator towards us. So, tighten all the bolts and start checking. If the tension is at the level of six to eight millimeters, start the engine and turn on all the main consumers of electricity. These are optics, air conditioning, stove and so on. There is no point in turning on music, because we need to listen to the whistle of the belt. If there is no noise, the work is considered successful.
Conclusion
So, we found out why the alternator belt whistles. As you can see, this can happen for various reasons. But first of all, you should check the tension level. In 80 percent of cases, the alternator belt whistles precisely because of this. Also remember that overtightening the mechanism can lead to increased wear of the bearings and the pulley itself. Stick to the golden mean, namely a parameter of 6-8 millimeters when deflecting in the middle section. And you can adjust the tension level yourself, using two keys. Therefore, if the alternator belt whistles, it is not necessary to go to a service station to find the problem. Perhaps the reason lies in its elementary incorrect tension.
