Replacing the alternator belt Niva Chevrolet is not regulated by any numbers, but the manufacturer clearly stipulates the timing of checking the integrity of the drive belt. It is necessary to check the condition of the alternator belt every 15 thousand kilometers. If the belt is cracked, frayed and oily, it must be replaced. Another reason for replacement may be the “squeal” of the slipping Chevrolet Niva belt, which does not disappear even after adjusting the tension.
If your Chevrolet Niva has air conditioning, then in order to get to the alternator belt you will have to remove the air conditioning compressor drive belt. To do this, we drive the car into a pit or overpass and remove the engine protection. You will also have to remove the front mudguard by unscrewing the screws.
To remove the air conditioning belt on the Chevrolet Niva, loosen the two bolts of the tension roller bracket and loosen the belt tension by turning the adjusting bolt counterclockwise. Look at the picture below.
A loose belt can be easily removed by hand.
After replacing the alternator belt, install the air conditioning belt in reverse order and tension it. To check the belt tension, press the belt with your finger in the middle between the compressor pulleys and the crankshaft. With a pressing force of about 10 kgf, the belt deflection should be about 8.0 mm.
And now let's go back to replace the alternator belt shnivy. To replace the belt, remove the rubber sleeves for supplying air to the throttle assembly. This will make it easy to loosen the tension.
Then, with the “13” head, we loosen the tightening of the three nuts securing the tension roller bracket. With a key or a “13” head, we turn the adjusting bolt counterclockwise, loosening the belt. We remove the belt from the tension roller and other pulleys.
We install a new belt in the reverse order, putting it first on the crankshaft pulley, and lastly on the tension roller. After installation, adjust the belt tension. The diagram of the correct location of the drive belts in the next photo.
To check the belt tension, press the belt with your finger in the middle between the pulleys of the generator and the coolant pump. With a pressing force of about 8.0 kgf, the belt deflection should be about 12 mm. pulling the belt does not bode well. Not only will the alternator belt wear out quickly, but it will also shorten the life of the bearings of the auxiliary units of your Chevrolet Niva.
Chevrolet Niva To check the condition of the belt, pull up ... To check the condition of the belt, pull up ...
Chevrolet Niva 
... and remove the engine screen from the four studs .... and remove the engine screen from four studs.Chevrolet Niva 
To check the belt tension, press your finger on the belt in the middle between the pulleys of the generator and the coolant pump. To check the belt tension, press your finger on the belt in the middle between the pulleys of the generator and the coolant pump.
With a pressing force of about 8.0 kgf, the belt deflection should be 12 ± 1 mm.
To adjust the belt tension, remove the rubber sleeves for supplying air to the throttle assembly.
Chevrolet Niva 
With the “13” head, we loosen the tightening of the three nuts securing the tension roller bracket. With the “13” head, we loosen the tightening of the three nuts securing the tension roller bracket. Chevrolet Niva 
The location of the auxiliary drive belt and the nuts for fastening the tension roller bracket (for clarity, it is shown with the radiator of the engine cooling system removed). 
With a key or a “13” head, we turn the adjusting bolt clockwise, tightening the belt. With a “13” key or head, we turn the adjusting bolt clockwise, tightening the belt.
Tighten the nuts securing the idler pulley bracket. We start the engine, stop it and check the belt tension again.
Attention! Do not overtighten the belt! Excessive belt tension leads to premature failure of the belt and bearings of the alternator, coolant pump and power steering pump.
We replace the drive belt of auxiliary units when cracks, tears and delamination of rubber from the fabric base are found on it. On a car with air conditioning, remove the air conditioning compressor drive belt.
We loosen the tightening nuts of the tension roller bracket (see above) and turn the adjusting bolt counterclockwise, loosening the belt tension.
Chevrolet Niva 
We remove the belt from the tension roller and other pulleys. Remove the belt from the tension roller and other pulleys.
Chevrolet Niva 
Auxiliary drive belt marking (five-strand, 1888 mm long). Auxiliary drive belt marking (five-strand, 1888 mm long).
We install a new belt in the reverse order, putting it first on the crankshaft pulley, and lastly on the tension roller. After installation, adjust the belt tension (see above).
Source
Liked the article? Share with your friends on social networks!One of the most common causes of generator failure is a broken belt, since its service life is the shortest compared to other car designs. A broken belt is easy to detect visually if you open the hood and look at the pulley of the so-called belt drive. If, when you open the hood, you see that the alternator belt on the Chevrolet Niva is intact, then it is likely that the bearings need to be replaced, but this can only be detected after removing all the devices.
The main reason why generator repair is a waste of time and effort is damage to the winding. If this is the main cause of the breakdown, then you will have to rewind or it is best to purchase a new generator, then the Chevrolet Niva will last longer. Of course, you can take it for repair to a specialist who will make the appropriate repairs, but there are no guarantees that this will help, since there is no guarantee that the rewind will be of high quality, which will lead to incorrect current generation. Brushes also fail quite often, this is due to the fact that they constantly rub against the rotor. You can also replace brushes at home.
And so if, nevertheless, the alternator belt on the Chevrolet Niva failed, then you should change it.
Replacement is required not only if it breaks, but also when it is very badly worn or cracked, and in order to prevent a break on the road, an inspection should be carried out from time to time.
If you see the following damage, you should replace it immediately:
1. If signs of wear, cuts or cracks are visible.
2. If the belt began to exfoliate and threads come out of it.
3. If there is oil on it and it is tousled.
To replace it, we need the following tools:
1. Screwdriver It is better to have several or a set of screwdrivers.
2. The jack can be the standard one that came with the kit.
3. Mounting.
4. It is desirable to have a universal set of keys.
Belt installation:
If the belt is purchased and it is new, you can proceed with the installation:
1. We de-energize the car by disconnecting the terminals from the battery.
2. We pull out the connector with, this can be done by unscrewing the fixing bolt with a Phillips screwdriver. Then we remove the sensor.
3. The device that is fixed with a nut is slightly unscrewed and shifted to the block.
4. We remove the worn belt, this is easy to do since the device is loose.
5. The right side should be jacked up, focusing on the wheels in advance. We put the field on the fourth speed, since we will rotate the right wheel.
6. We pull it gradually removing it from the pump pulley, turn the wheel, gradually pulling the belt from the pulley.
The belt that you removed is usually beyond repair, so after removing the old one, we immediately proceed to install the new one.
1. We throw at the beginning on the crankshaft pulley, and only then on everything else.
2. It is best when the procedure ends with putting on the generator pulley. The wheel rotates all the time until fully dressed.
3. After the device is installed in its seat, it should be fixed with a bolt.
You should know in what sequence it is thrown onto the pulleys:
· This is the Crankshaft Pulley.
· Then onto the tension roller.
· Then the right lower pulley.
· A roller which to be under the generator.
Then the pump pulley
· And already at the end of the alternator pulley.
After all this, it should be well tightened. Since if the tension wakes up weak, then the battery will not be provided with the charge it needs.
4. Install the sensor in its place.
The only easy repair option is to replace it or you can tighten it, other problems that arise are usually eliminated only by removing it.
How to remove the generator.
To remove the generator, you need to use a ten spanner, loosening the nut that holds the bases off, removing all the nuts from their seats. Then we unscrew the adjusting screw, having previously found it. After making sure that the screw moves freely, unscrew it to the top of the platform. In the photo you can see where all these bolts are located.
We recline the belt from the pulley, and unscrew the bolts that hold the device, this can be done with a thirteen key, and on the other hand with a seventeen key. We disconnect two wires that are connected to the back of the generator, one is connected to the bolt head of the other in a plug-in way, we disconnect them. Then we remove it from the seat.
As you can see, the process of replacing the alternator belt is simple, but very capacious, especially if there is still a need to replace the alternator with a Niva 2121. Therefore, you decide to repair it yourself or contact a special service.
Most VAZ-Chevrolet SUVs were produced and are being produced with the 2123 engine. The simplest operation on it is to adjust the tension of the belts. Here we will look at how to tighten the alternator belt on a Chevrolet Niva - this word means the belt of auxiliary units. A separate drive is provided for the air conditioner. But he won't bother us.
The part in question is shown in one video.We look.
Tensioning the alternator belt
Check that the ignition is off. After opening the hood, you need to remove the plastic trim, overcoming the resistance of the clamps (4 pcs.). Then, taking a screwdriver, loosen the clamp on the main duct (photo 2).
Set of preliminary steps
The “10” key unscrews the fastening screw (photo 3). The screw is removed, and then the air duct must be removed from the filter housing. Preparation completed.
What and how to regulate
Before tightening the alternator belt, three nuts are unscrewed on the Chevrolet Niva. You need to unscrew them by 1-2 turns, but first you need to find each of them.
Fastener of the adjusting unit
Nuts are designed on a turnkey basis "for 13":
- The first is indicated by an arrow in photo 1;
- The second and third are located near the adjusting screw. They are shown in photo 2.
The screw itself in the first picture is between points 2-3.
Adjustment process on a Chevrolet Niva
With a “13” spanner, the screw can be unscrewed, thereby loosening the tension, or tightened. We rotate the key to the left - the tension is weakened (photo 2).
Adjusting screw
If the adjustment is correct, pressing on the belt at point P (see drawing) causes a deflection of 1.1-1.2 cm. The pressing force should be 75 N.
VAZ-2123 generator drive unit
More accurate adjustment can be made in the conditions of service stations.
Tighten the fixing nuts with a torque of 21-27 Nm. For the screw holding the "sleeve", the recommendation looks different: 20-25 N * m.
Why adjust the alternator belt
A tightened belt makes a whistling sound during operation. In this case, the bearings wear out faster than expected. In addition, the belt overheats, which means it wears out quickly.
It would seem that the tension can be loosened, but an undertightened belt wears out even faster. The reason is the increased vibration.
Please note: the cooling system pump “hangs” on the alternator belt. These are the features of the VAZ-2123 internal combustion engine. Stopping the pump will not necessarily lead to overheating. But without it, the motor cannot be operated.
Causes of whistling: incorrect adjustment, high degree of wear. Draw your own conclusions.
Video of replacing the alternator belt on a Chevrolet Niva with air conditioning
Replacing the alternator belt rollers is a standard procedure that you can do yourself. This article provides detailed instructions on how to replace a Chevrolet Niva car.
Reasons for failure
Before moving on to the signs and solution of a breakdown, it is worth talking about the possible causes of failure, and how they are expressed:
-
Entry of a foreign body.
This is most likely evidenced by impact marks on the case and marks on the flat side of the belt. -
Incorrect belt tension adjustment - excessively strong or weak.
In this case, the tension indicator, tensioner cover or its limiter breaks. This can be caused by incorrect bolt tightening or incorrect sizing. - Work in high temperature.
-
Part twist.
Because of this, belt marks can be seen on its surface. - Mechanical damage from tools during installation.
By what signs to recognize a malfunction
A number of signs indicate the need to replace old rollers with new ones. They appear both directly during the ride, in extraneous noise as well as visual inspection.
Replacement is necessary if:
- Mechanical damage on the surface of the rollers;
- Noticeable backlash;
- Grinding noises when turning. This is a clear sign that the car needs repair;
- Damaged bracket or bearing;
- Leaking oil;
- High temperature during operation;
- Strong vibration during operation;
- Difficulty in turning the shaft.
It will not be superfluous to also check the serviceability of the belt. It should not have cracks, cuts or delaminate. If it is defective, then it must be replaced.
Sequence of work, 1 - removal of faulty parts.
The first step is to prepare the generator for the repair and replacement process. To do this, remove the old parts. For this you will need wrenches diameter 10 and 17.
1. First of all, you need to loosen the belt and remove it, otherwise you will not have access to the bearings themselves. To do this, loosen the roller, which is held by a platform with nuts. There are three nuts, they need a 10 wrench. Once they are all unscrewed, you need to unscrew the adjusting screw so that it moves up from the platform. Thanks to this, the section with rollers and belts will move freely up and down. In order to throw off the belt, move the platform up. It is also worth noting that it is not necessary to remove the belt completely - it is enough to lower it from a faulty part.
2. The next step is to remove the faulty rollers:
- Set the car in first gear in order to prevent the crankshaft from turning;
- Unscrew the nut that secures the part
- Take out the spring washer and remove the part.
The process of removing the generator rollers on a Chevrolet Niva is identical to any other car.
Step two: replacing the alternator belt pulley
Replacement takes place in several steps:
1. First, the protective cover of the bearing is removed;
2. After that, with the help of the 17th ring spanner the nut that holds the bearing structure is removed;
Installing new parts
5. The new ring is installed in its place;
6. A new roller is installed in place of the old bearing. Before this, the diameters of both parts should be checked to avoid the inoperability of the mechanism;
7. Next, the bearing is fixed with a washer with a spring mechanism and a nut; 
8. After that, the belt is put on a new roller.
Checking installed parts
After that, a final check of all mechanisms is carried out and the elements are collected in the reverse order.
If the belt is tight and there is not enough effort to loosen or tighten it, there are several ways:
1. You can put the car in 4th gear, put the belt on the roller and push in the direction of rotation of the crankshaft. When it starts to turn, you need to pull the belt on the alternator pulley, and it will fall into place by itself.
2. In the same way, you can not push the car, but lift the wheel and spin it, or scroll the generator itself.
Thus, it is easy and quick to replace the Chevrolet Niva generator belt rollers. You should regularly diagnose the moving parts of the car in order to prevent possible breakdowns in time and replace faulty parts.
