Lada Priora: replacing the auxiliary drive belt on a car with air conditioning

Surely all owners of a Lada Priora have had to replace the alternator belt. Its resource is not eternal and it has a replacement schedule, which is 60,000 thousand km, or two years, after its installation on the car. But as a rule, a forced replacement is an unpleasant creaking sound when the belt slips, since the belt stretches over time. Also, upon visual inspection of the belt, you can see cracks and abrasions, this also indicates its imminent demise. Here, owners of Lada Priora have difficulties when buying a belt for auxiliary units, since their sizes are different.

The size of the alternator serpentine belt on a Lada Priora without power steering and without air conditioning is 6РК742 - (742 mm). Belt size with power steering and without air conditioning 6РК1115 - (1115 mm). The size of the alternator belt with air conditioning and without power steering is 6РК1125 - (1125 mm). Alternator belt with power steering and air conditioning 1420.

But it can also be noted that the size of the alternator belt on a Priora with air conditioning also varies. Two different air conditioning systems were installed on the Lada Priora model - Halla and Panasonic, and the compressor mounts differ in the bracket configuration, which is why the belt length is different. On a Priora with Halla air conditioning, the belt is installed 6РК1115 (1115 mm), on a Panasonic air conditioning system 6РК1125 (1125 mm). Therefore, the owner of this model needs to know what climate system you have installed. Information about the lamps used on the Lada Priora will also be useful.

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Drive of auxiliary units on a car with air conditioning: 1 - drive pulley of auxiliary units;
2 - tension roller; 3 — bracket for the right support of the power unit; 4 — generator pulley; 5 — air conditioning compressor pulley Drive of auxiliary units on a car with air conditioning: 1 — pulley of the drive of auxiliary units; 2 - tension roller; 3 — bracket for the right support of the power unit; 4 — generator pulley; 5 - air conditioning compressor pulley

Belt sizes

The Priora is equipped with a poly-V-ribbed alternator belt of various sizes depending on the vehicle configuration. The more additional equipment installed on the vehicle, the longer the belt will be.

Below is a table with the dimensions of the Lada Priora alternator belt.

The differences in alternator belts in Priors with air conditioning are due to the fact that they have different mountings for the air conditioning pumps, which significantly affected the size of the belt itself.

How to understand which air conditioner is installed in your car, read more in our article here.

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Using the “17” head, turn the crankshaft clockwise by the bolt securing the auxiliary drive pulley and inspect the belt along its entire length.
Using the “17” head, turn the crankshaft clockwise by the bolt securing the auxiliary drive pulley and inspect the belt along its entire length.

The belt should not have cracks, tears, or separation of rubber from the fabric base. We replace the defective belt.

Signs of belt replacement

Signs for which it is recommended to replace the alternator belt are presented in the list below. It is not recommended to go on a long journey, for example at sea in the summer, with an already worn-out belt, since replacing the alternator belt on a Priora in the field is quite problematic.

List of signs:

• Belt whistle;
• Cuts and cracks;
• Delamination;
• Dryness;
• Sticking threads are visible;

If such factors exist on your belt, it is advisable to replace it soon.

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To check the belt tension, hold the belt with your fingers in the middle between the tension roller and the generator pulley and turn the belt.
To check the belt tension, hold the belt with your fingers in the middle between the tension roller and the generator pulley and turn the belt.

The belt should not rotate more than 90°. Otherwise, the belt tension needs to be adjusted. To tighten the belt, turn the tension roller counterclockwise, and to loosen it, turn it clockwise. To do this, insert a special key into the holes of the tension roller in the form of two rods with a diameter of 4 mm, welded to the base of the key (the distance between the rods is 18 mm). You can use the key for the old-style timing belt tension roller, installed on all front-wheel drive VAZ cars. If you do not have a special key, you can insert two pins (screws) with a diameter of 4 mm into the holes of the tension roller. Using the screwdriver shaft located between the pins, turn the roller.

Generator malfunctions and ways to eliminate them

There aren't many problems. They come in two main varieties.

The generator and battery always work together. For the battery, the generator is the only autonomous power source, which allows it to remain as a backup power source for the on-board network when the generator is not working. In turn, by constantly recharging the battery, the generator makes it possible to start the engine at any time.

Generator malfunctions do not occur out of nowhere; there are usually preconditions for breakdowns. And the owner has the opportunity to correct the malfunction in a timely manner. Otherwise, the generator will need to be repaired on Priora.

Difficulty starting the engine

Problems with starting the propulsion system directly indicate problems with the generator. If it malfunctions, the battery experiences a constant lack of charge, which means it does not have enough power to rotate the engine flywheel through the starter. A discharged battery is the main result of a generator breakdown. A malfunction of this device can result not only from a lack of charge, but also, conversely, from overcharging. Such phenomena arise due to the failure of the relay regulator, i.e., current is generated in much larger volumes. This leads to boiling of the electrolyte in the battery banks and, as a consequence, to failure of the battery.

Headlights are dim or flickering

The second main sign of malfunction is easy to notice in the dark. As a rule, as the load on the on-board network increases, the brightness of the headlights decreases significantly. Such a symptom may indicate a breakdown of both the device itself and its drive belt (the tension should be checked). A decrease in brightness is observed not only in the headlights, but also in the dashboard lighting.

The control lamp is constantly on

If it works on the panel all the time, this can only indicate that the battery is not receiving sufficient charge. Thus, the on-board computer warns that the car will not start at all soon. In other words, the on-board network uses a battery rather than a generator as the main power source. In this situation, after just a few kilometers the battery will be completely discharged and the engine will stall, since the spark plugs will no longer be able to produce a spark.

If such a problem occurs, first of all you need to turn off as many energy consumers as possible (headlights, audio system, heating, etc.). And try to get to the nearest car service center. Otherwise, you will have to turn off the engine and call a tow truck.

Some modern batteries may become unusable after the first full discharge, which means that the services of a tow truck will save money.

Drive belt whistle

Often when starting the engine, especially in the cold, it starts to whistle. This sound occurs because the generator drive belt is too loose and simply slips. In this case, you need to tighten the belt as quickly as possible, eliminating the malfunction.

Ignoring the whistle leads to the fact that insufficient rotation speed of the pulley due to slipping causes a voltage drop, since the generator does not generate the necessary electricity. This is especially true on simple engines without additional equipment. As a rule, on power plants with power steering and air conditioning, a special roller is used to automatically tighten the strap.

Belt damage

If smoke and a characteristic smell of burnt rubber appear in the area where the generator is located, it means that some drive begins to jam, as a result of which the generator belt on a Priora with air conditioning heats up and peels off. In some cases, a broken belt not only causes the generator set to stop, but can also cause a malfunction of the gas distribution mechanism if pieces of rubber get under the timing rollers or pulleys. Overheating and destruction of the belt may also indicate wear of the bearings; they should rotate freely.

Ringing and other extraneous sounds when the generator is running

The device is equipped with rolling bearings. Their operating conditions involve elevated temperatures and heavy loads, which leads to a decrease in their service life. With use, these devices begin to wear out, and their lubricant burns out. As a result, the lack of the proper amount of lubrication leads to the appearance of characteristic sounds of worn-out bearings. Operating a generator with such symptoms usually ends in the destruction of the bearings and failure of the entire assembly.

The overrunning clutch may also make noise. As it wears out, it begins to deform and can no longer perform its normal functions. In any case, to troubleshoot problems, you should remove and disassemble the device, replacing damaged elements.

A special electric hum

When the motor winding closes, a sound arises that cannot be confused with another. When it occurs, it is easily identified even by a beginner. In this case, the easiest way is to change the generator assembly or find a stator or rotor from the same device.

You should not go on long trips with a problem unit. Failure of the device can cause the engine to stop completely and require outside assistance. Without tools, spare parts and other necessary materials, it is impossible to solve the problem on site. Especially if in most cases the battery is completely discharged. To avoid this, you should regularly inspect the generator and identify even the slightest malfunctions in time.

It is recommended to remove the assembly every 80,000–100,000 kilometers and completely disassemble it for troubleshooting and inspection.

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To tension the belt, use a 17mm spanner to loosen the bolt securing the tension roller and use a special wrench to turn the roller counterclockwise.
To tension the belt, use a 17mm spanner to loosen the bolt securing the tension roller and use a special wrench to turn the roller counterclockwise.

Having adjusted the belt tension, tighten the tension roller mounting bolt to a torque of 34–41 Nm.

To replace the belt, place an adjustable stop under the oil pan through a wooden block.

The best alternator belts for Priora

The service life of the alternator belt on a Lada Priora car reaches 60,000 km, but quite often after replacing the belt it begins to whistle. After tightening, the whistle goes away, but appears again until the tension roller can no longer tighten the belt. This is due to the fact that the car uses a low-quality belt.

The table below shows the best and highest quality alternator belts.

Price and dimensions of the Priora generator frames

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To replace the tension roller, completely unscrew the bolt securing it and remove the tension roller.
To replace the tension roller, completely unscrew the bolt securing it and remove the tension roller.

Install the tension roller and auxiliary drive belt in the reverse order. After installation, adjust the belt tension (see above).

Lada Priora: replacing the auxiliary drive belt on a car with air conditioning

Preface

Every car owner has encountered such a problem as creaking and slipping of the alternator belt when turning on the headlights, air conditioning, or when driving the car in wet weather. In most cases, to solve this problem, you just need to tighten the belt and everything will fall into place, the creaking and slipping will disappear.

There are times when tightening does not help and the belt has to be replaced, and then Prior owners have a question: what size belt is installed on my car?

The alternator belt in a Lada Priora car can be made in several sizes depending on the vehicle configuration.

In this article we will talk about alternator belts for the Lada Priora car. Below we talk in detail about belt sizes, their manufacturers that you can easily trust, and of course about the process of replacing the alternator belt.

Step-by-step instructions for replacing without power steering

Do-it-yourself replacement work on a Priora without power steering (EUR) and air conditioning is more convenient to carry out in the inspection pit.

Tools

• a set of keys;
• fender liner removal device;
• balloon wrench.

Stages

1. First, loosen the nut with a wrench of the appropriate size.
2. Unscrew the adjusting bolt.
3. We move the generator towards the power plant.
4. Remove the right front wheel.
5. We remove the fender liner and get access to the old belt.
6. We replace it with a new one and do not forget to tighten it.
7. Checking the tension. It should not be weak, but tightening it on a model with power steering (EUR) is also dangerous. The generator bearings may be the first to suffer.

Nut that needs to be loosened

Unscrew the bolt

We install a new one

How often should I change

In the service manual, the manufacturer indicated that the service life of the product is 200 thousand kilometers. However, there have been cases where the product needed to be replaced after 20 thousand km or even earlier. Practice shows how many kilometers a factory strap can actually withstand: on average, this figure ranges from 120-150 thousand km.

User Ivan Bolutov spoke about the choice of original timing belts for the Lada Priora.

We recommend that you familiarize yourself with the signs that indicate the need to change the product:

• the appearance of traces of motor fluid on the structure of the strap, the consumable material quickly destroys the structure of the product;
• the presence of defects and other types of damage on the strap, cracks quickly destroy the product;
• belt loosening;
• stretching of the product, in such conditions the service life of the strap is reduced.

Generator characteristics

The VAZ 2170, or Lada Priora, is equipped with a classic alternating current device, supplemented by a diode bridge for rectifying electricity and a voltage regulator. Works in parallel with the battery in all modifications of Lada Priora with engines operated at temperatures from -40 to +45 degrees.

The Priora factory generator 5102.3771 is produced by the Russian brand “Pramo”.

Its main feature is the increased current output parameters at low speeds (at 300 rpm up to 6 Amperes). Undoubtedly, this is a significant advantage, especially when operating a car in winter at subzero temperatures. Moreover, the use of such a unit allows the use of an automatic transmission.