Sooner or later, or rather every 50,000 km on a 16-valve VAZ-2112 engine, it is necessary to change the alternator belt. Of course, the reason for replacement is not only mileage. Not every car enthusiast knows how to replace this part, much less where it is located. Therefore, this article will tell you how to replace such an important element as the alternator belt.
Video about replacing the alternator belt on the front-wheel drive family of VAZ 2110-2112 cars:
The video material will tell you how to properly replace the alternator belt, the reasons, as well as the factors that influence this.
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.
Electrical faults: diagnostic methods
Electrical problems in the operation of a generator can be identified based on several factors. So, among the popular symptoms are lack of charging, reduced charging voltage, or vice versa – increased. Without a multimeter, these breakdowns are determined by their main symptoms. So, the battery charge lamp on the instrument panel will light up or blink. Also, when the engine is running, the headlights shine very dimly, and the windshield wipers operate at a slow speed. Increased voltage will be indicated by boiling electrolyte in the battery and very bright headlights.
Selecting a belt manufacturer
Today, choosing a manufacturer of a particular spare part can be quite difficult due to the fairly wide selection. But if we look at the statistics of many car owners and service stations, we can conclude that the highest quality belts for driving auxiliary units are:
- BRT - Balakovo Rubber Equipment, often installed from the assembly line
- GATES - often also a factory option
- Bosch - has a fairly wide range of products, including belts, and the quality is quite high
- LUZAR
- ANDYCAR
If we consider the most trouble-free belts, then according to statistics from surveys of motorists and service station technicians, we can conclude that the highest quality ones are produced by GATES and domestic BRT.
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 the optimal size is 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. Due to 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 fastening bolt and turn the crankshaft a couple of turns, then check the tension;
- If all is well, the tension is correct, the nut can be tightened back.
Generator set design
Generator
VAZ-2112 consists of covers - front and rear. They are made of aluminum alloy and have special sockets where bearings are installed. On the back cover there is a terminal that is used to connect the battery. It also has a connector. Through it, voltage is supplied to the excitation winding. There is a capacitor on the back cover - it serves to suppress electromagnetic interference. There are places on the device for installing and securing brushes.
The core cylinder in this generator is made of transformer iron. Inside it there are special grooves in which the winding is neatly laid. Also on the cylinder there are leads for connection to the rectifier unit. The covers are screwed to the stator using bolts. The shaft, which acts as a rotor, has an excitation winding. It is connected to copper rings. A special groove is made at the front end of the shaft, which serves to install the drive pulley. The brushes are made in one piece, which is combined with the generator relay. It is housed in a durable metal case and securely attached to the brush holder. The back cover inside holds the diode unit - it includes 6 main elements and three additional ones. They are mounted on aluminum semicircular plates, due to which the diodes are cooled more efficiently. There is a diagram in your car's owner's manual that can help you figure out how the alternator
VAZ-2112.
It is also used for repair work.
Replacement
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.
- Loosen the tension of your belt further. You already know how to do this from the previous section, where we talked about tensioning the alternator belt.
- Move the generator towards the power unit, which will allow you to remove the belt from the crankshaft and generator pulleys.
- 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.
How to install a timing belt on a VAZ 2112 16 valves: installation, tension and adjustment
Replacing the timing belt on a VAZ 2112 16 valve is required by regulations as part of scheduled maintenance. You should regularly additionally monitor the condition of the unit and take action if necessary. To check the tension, a special indicator is used; if you wish, you can do without it. All adjustments are made on a cold engine. It is quite possible to replace the part on your own, but you need to follow the instructions.
When is it necessary to replace the timing belt on a VAZ 2112
The VAZ 2112 16 timing belt is replaced at intervals of several tens of thousands of kilometers or earlier if visual defects appear. If cuts, cracks, or delaminations are found during inspection, a new unit must be installed. Breaks and defects appear naturally over time, or due to violation of operating requirements. The timing belt cannot be used for more than the specified period.
Where is the belt
To install the VAZ 2112 timing belt, you need to determine where it is located. The location is the same in all car models. You need to open the hood, find a toothed rubber element covering a whole set of pulleys. If you have any questions, you should look at the instructions. From a technical point of view, the mechanism engages the camshaft, crankshaft and several auxiliary elements. This combination reduces timing life, but increases driving comfort.
It is convenient to search for a belt assembly according to the diagram from the instructions
If not replaced in time
If you do not change the timing belt on your VAZ 2112 on time, you can bring the situation to a critical state. The rupture disrupts the functioning of the motor. The result is that pistons and valves constantly rub against each other, since their movements cannot be controlled. As a result of mechanical shocks, the valves are deformed, the pistons touch, the cylinders are scratched, the walls are damaged, and the system fails.
Motorists Council
As practice shows, many experienced VAZ 2110 drivers, who have been driving this particular model for many years now, carry an additional alternator belt with them in the trunk.
This is due to the fact that its breakdown can occur at the most inopportune moment. This node cannot be called the weakest point of the “ten”, 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, go to the nearest service station, and pay a lot of money for the services of specialists. Although, if you have a spare alternator belt and a standard set of 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!
Principle of operation
The rotor, whose main task is to create a magnetic field, is a shaft on which the excitation winding is located. Each half of it is placed in special pole parts. The slip rings supply current to the winding. The rotor rotates due to a belt drive from the drive. The stator consists of a core and a winding. Here, alternating current is generated, which is sent through the rings further along the electrical network. However, it must first be removed from the frame. In order to supply current to the rings, a brush assembly is used. Then comes the rectifier unit, which converts the alternating sinusoidal voltage generated by the generator. In different cases, different circuits for connecting the excitation windings are used. For example, another separate pair is applied. Current simply cannot flow through the battery if the engine is not running. When connecting the winding in a star configuration, you can increase the generator power by 15%. The generator relay maintains the voltage of the device within the specified limits. It changes the frequency and duration of electrical current pulses. A relay is a set of several sensors and actuators. Their task is to determine how long the field winding should be in the network. If the relay is faulty, then an unstabilized voltage will be supplied to the battery.
Alternator belt: choice of brand and length
When the alternator belt wears out quite strongly, many owners begin to think about which manufacturer to choose for the next replacement. We often come across reviews from VAZ 2110 owners who installed new belts and did not have time to drive even 5,000 km, after which they broke in half.
This is a clear sign of low-quality or even defective products, if the tension was normal and there were no external influences.
Sources
- https://luxvaz.ru/vaz-2110/54-natyazhka-i-zamena-remnya-generatora.html
- https://pts.ru/razmery-remnya-generatora-vaz-2112-16-klapanov/
- https://venteler.ru/dlina-remnya-generatora-vaz-2110-16-klapanov-s-konditsionerom/
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