How to tighten the alternator belt on a VAZ 2110, 8 valves

How to tension the alternator belt?

Tensioning the alternator belt is not a difficult task. This operation will take at most 10 minutes. I should immediately note that the VAZ 2114, 2113, 2115 have different engines (1.5 and 1.6 liters), therefore the process of tensioning the belt is different.

For engine 2111 (1.5 l)

• Loosen the tightening of the upper and lower fastenings of the generator.
• We adjust the belt tension using the adjusting screw. Clockwise we tighten the belt, counterclockwise we loosen it.
• Having tensioned to the required point, tighten the generator fastenings and check the belt.

For 1.6L engine

In this operation, in addition to the keys, we will need a small crowbar.

• We also loosen both generator mounts.
• Next, take a crowbar and move the generator away from the engine (pull the belt), resting the crowbar on the cylinder block. If the belt tension needs to be relaxed, then we move the generator towards the engine.
• We tighten the generator mounts and check the belt tension.

If, after adjusting the belt, the problem of voltage sags remains, then look for another problem here, having first checked the generator (How to check the generator?).

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Possible malfunctions in the electric generator drive and ways to eliminate them

Malfunctions in the belt drive of an electric generator during operation can manifest themselves in different ways:

• it may be a whistle from the drive location;
• This is a weak generator voltage, due to weak tension and periodic slippage of the belt drive. Slippage can also occur with normal, standard belt tension due to water, coolant or oil getting into the working elements of the drive;
• No less dangerous for the engine is too much tension in the drive. Due to excessively large loads, bearings may be destroyed (how to change a bearing on a VAZ 2114 generator?), gears or shafts damaged, and the belt may also break. In this case, further movement will be impossible until it is replaced with a new, working one. The worst situation is when a gust occurs on the highway, in a deserted place. Driver practice suggests that this does not happen very rarely.

Attention! Experts and experienced car owners recommend having a new belt in a spare set in the trunk, despite the fact that the driver can learn how to properly tension the alternator belt on a VAZ 2114 within 10 minutes. They also advise you to read an article about how to remove the alternator belt in order to be “savvy” for all occasions.

Since the condition of the generator belt drive is a vital issue, monitoring it is the responsibility of the driver. Checking the belt is quite simple - you just need to simply press it with a force of 10 kg to check the deflection. For an electric generator of brand 9402.3701 it should be within 0.6 - 0.9 cm, for brand 37.3701 - 1.0 - 1.5 cm. In addition, it is necessary to check the cleanliness of all drive elements.

If the driver hears that the generator belt is whistling, then it is imperative to immediately check the condition of the belt drive. The fact is that if the belt is really loose, it can twist and break at high speeds.

If during inspection it is determined that there is a weakening, then you need to tighten the generator belt. To do this, you need to perform a number of simple steps and keys to “10” and “13”.

• Place the car on a level surface and put it on speed and handbrake.
• Open the hood and before tightening the alternator belt on the VAZ 2114, use a key set to “13” to loosen the nut securing the alternator housing to the adjusting rail.

Loosening the lower bolt of the VAZ 2114 generator

• Using a “10” key, tighten the adjusting screw of the tensioner mechanism, while the body of the electric generator should move along the rail towards the front of the machine.

• As the tensioner screw rotates, it is necessary to control the belt deflection. After it is within the normal range for the type of electric generator installed on the machine, you need to use a “13” key to firmly tighten the nut on the adjusting rail.
• As soon as the fastening nut is tightened, you need to turn the crankshaft twice by hand and check the deflection again. If it is within the normal range, then, after starting the engine, you need to check the operation of the belt drive in operating mode. During this check there should be no extraneous noise, the belt should rotate without bending or moving to the side.

Alternator belt VAZ 2115

The belt in the generator drive on vehicles is installed in order to be able to transmit the rotational motion of the crankshaft to the drive of the generator set. Modern cars are highly equipped with various electrical equipment, so traffic safety largely depends on its reliability. Such reliability of equipment operation and battery charging is ensured by a powerful generator set.

Replacement

To do this, sometimes you need to remove the wheel or fender protection, and sometimes the crankcase protection, but we can do without it. Fortunately, Samara has enough space in the engine compartment than, for example, Kaliny. We remove the tension on the generator belt - to do this, you need to loosen the nut securing the generator and the tensioner (see figure) Before removing the generator belt from its place, it is best to carefully inspect and remember it (and for accuracy, sketch or photograph) then how the belt is positioned, as well as what elements it hooks onto. Often the belt is driven by several units at once. This is necessary so that the new alternator belt is installed strictly in its place.

How to install the alternator belt?

That's it, the belt has been removed from its place. Now you need to carefully examine it and compare it with the new one; the length of the alternator belt must be identical, otherwise the belt will not fit your car. If both belts are the same, then installation of the alternator belt begins. This must be done by completely repeating the installation drawing, and be very careful. After all, a mistake made during installation can lead to various consequences: incorrect operation of units and components, or even breakdown of the car. The belt can be considered correctly installed if its sag is approximately 1-1.5 centimeters.

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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!

Belt generator VAZ 2112. stretching and replacing the generator belt yourself

Hello, dear motorists! VAZ tenth series cars quickly spread throughout our country.

The new design, economical engine and affordable price helped expand the circle of fans of these cars.

Alternator belt tension on VAZ 2115

The alternator belt on a car plays a very important role; it connects the engine crankshaft and the generator, which provides a constant charge to the battery. If the belt is loose or was initially installed incorrectly, the battery may be completely discharged while on the road. This breakdown will not be very pleasant, so there is no need to make mistakes in the repair. Today we will tell you how to tighten the alternator belt on a VAZ 2115 with your own hands.

What can happen when the alternator belt is too loose or stretched?

Very often, when many electrical appliances are turned on at the same time (GPS navigator, radio, fog lights, air conditioning, etc.), an unpleasant whistle can be heard from under the hood. This whistle is typical when the tension of the alternator belt on a VAZ 2115 is weak; it can slip on the pulleys. As previously reported, such a breakdown will not benefit the car battery.

Video. Tensioning the alternator belt on a VAZ 2115 with your own hands

The car manufacturer recommends replacing the alternator belt every 15 thousand kilometers. If you have previously noticed cracks or obvious damage to the belt, you need to replace it before the regulations. It is worth noting that if the belt is overtightened, the generator bearings may become faulty.

Let us recall that in the previous article we looked at how to replace the alternator belt on a VAZ 2110 with your own hands. This procedure is almost the same as the classic model, but there are minor differences.

As we reported earlier, when the alternator belt tension is weak, voltage dips appear, an unpleasant whistle under the hood occurs, and instruments and headlights dimly illuminate the road. It is also possible that a red battery signal may appear on the dashboard of the car.

Do-it-yourself alternator belt tension on a VAZ 2115

The generator belt tension should be optimal. When pressed with a force of ten kilograms, the belt should bend by ten to fifteen millimeters (generator 37.3701) and six to ten millimeters (generator 9402.3701).

Carrying out repair work on belt tension on a VAZ 2115 is not difficult, you just need to understand how to do everything. First you need to prepare two open-end wrenches for 17 and 19, the process itself will take about half an hour. It's worth noting that each engine has a different alternator belt replacement process, so be careful.

Why does the whistle occur?

There are several reasons why the characteristic whistle-like sound occurs.

1. 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.
2. 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.
3. Although moisture gets on the belt very rarely and evaporates almost immediately, the connection can still whistle. In this situation, tension is required.
4. The generator itself jams.

How to tension the alternator belt on a VAZ 2115, 2110 correctly?

The generator belt, despite the simplicity of its design and seeming primitiveness, plays a very important role, connecting the generator and the engine crankshaft, which actually drives the electric generator. Very often there are situations when, due to poor tension of the alternator belt, the quality of battery charging deteriorates.

When the load on the electrical network increases, for example, when several electrical consumers are turned on at once (headlights, stove, radio, etc.), a characteristic whistle may occur that the generator belt makes. A belt that is stretched or too loose can slip on the pulleys, which also leads to a drop in tension. This sound most often indicates moisture on the belt or that the alternator belt needs tightening.

The importance of tension level and checking it

How to tension the alternator belt

Let's consider what unpleasant consequences an incorrect level of tension will lead to. If it is weakened, then there is a high probability of slippage . That is, the generator drive will not operate at rated speed, which in turn will lead to the level of voltage generated by it being below normal. The result is an insufficient level of battery charging, insufficient electricity to power the vehicle systems, and operation of the electrical system under increased load. In addition, when slipping, the temperature of the belt itself increases significantly, that is, it overheats, which is why it loses its service life and may fail prematurely .

If the belt is too tight, this can also lead to excessive wear on the belt itself . And in the worst case, even to its breakage. Also, excessive tension has a detrimental effect on the bearings of the crankshaft and generator shaft, because they have to work under conditions of increased mechanical load. This leads to excessive wear and speeds up their failure.

How to tension the VAZ 2115 alternator belt?

It is not difficult to adjust the VAZ 2115 alternator belt; it is only important to understand how it is done correctly. To adjust the alternator belt on VAZ cars, you will need only two keys, “17” and “19”, and the procedure itself will take from 10 to 20 minutes. It should be noted that VAZs 2114, 2113, 2115 can have different power units installed; for each modification, the process of tensioning the alternator belt may differ.

Tensioning the alternator belt on a 1.5 liter VAZ 2110 engine.

1. First you need to loosen the fastenings of the upper and lower ones.
2. Adjust the belt tension using the adjusting screw - clockwise to tighten the belt, counterclockwise to loosen it.
3. Having established the required tension, tighten the generator mounts and check the degree of tension.

On 1.6-liter engines, in addition to the keys, you will need a small assembly or pry bar. The principle is the same, loosen the alternator mounting bolts, then use a pry bar to move the alternator away from or toward the engine, depending on whether you need to tighten or loosen the alternator belt. When finished, secure the mounting screws and check the belt tension.

We recommend watching a video on how to tighten the alternator belt on a VAZ 2114 with your own hands.
Text: vaz-remont.ru
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LAYOUT

On this car, however, as on the VAZ 2113 and VAZ 2115 models, the power unit is located across the body. With this engine arrangement, if you open the engine compartment hood, the generator set will be located on the left side of the engine.

On this side of the engine, the timing gear drive pulleys, water and oil pumps are also installed. This drive is covered with a plastic cover, and the generator drive passes over it. The belt installation diagram is shown in the figure.

Alternator belt installation diagram

The figure shows the generator drive parts:

1. Bracket for attaching to the engine block;
2. Connection of the generator with the bracket;
3. Tension screw;
4. Generator set pulley;
5. Axial screw;
6. Drive belt;
7. Generator pulley on the crankshaft.

The red arrow indicates the place to check the deflection of the belt drive, and the letter “A” shows its value. If the tension of the generator belt is done correctly, then the bending at the point being checked should not be more than 10 mm, under a load of 10 kg.