Generator for VAZ-2114 - how to remove it, replacement, repair

What does the generator on the VAZ-2114 consist of?

The generator is a three-phase device that operates with alternating current. All this is equipped with a specialized part of rectifiers that convert alternating current to direct current.

The generator on the VAZ-2114 consists of the following parts:

1. Lids, of which there are only two. They are usually made of aluminum and have grooves in them into which bearings are attached. The back of the cover is also equipped with a specialized terminal, which is connected to the battery. There is also a connector where voltage is supplied to the excitation winding. There is a capacitor on the back cover, and it is used to remove various radio interference.
2. Let’s not forget about another important detail – the stator core cylinder, which is made from special transformer iron. It also contains grooves where the winding is laid. There are also leads for connecting parts to the rectifier unit. The lid is screwed to it using screws.
3. The equipment that is located on the cylinder shaft is called the field winding. It is connected to copper rings, which ensures contact. To install the drive pulley, you need to use a keyway, which is located in front of the shaft.
4. Generator brushes, which are made from a single unit, combined with electronic relays. This is hidden behind a durable housing that is attached to the brush holder.
5. There is a diode block on the back cover. Their approximate number is 9 pieces and 6 of them are basic. This device is mounted on semicircular plates, which are also made of aluminum. Thanks to this, the conductors cool quickly.

The main malfunctions that we have discussed more than once on the website provaz2114.ru of the generator are:

1. The fuse has broken. To fix the problem, you need to change the fuse. Just first you need to find out the cause of the breakdown.
2. The circuit that powered the devices broke. You definitely need to check the connection of the wire with other contacts.
3. There was a breakdown in the ignition switch. It is imperative to make sure that the board from the ignition switch is working properly.
4. The control lamp is not working correctly.
5. The brushes are not working correctly. To get rid of the problem, you need to replace the brush holder and brushes. The slip rings must be cleaned with gasoline or treated with WD-40.
6. The voltage regulator is not working.
7. The alternator belt is damaged or begins to work poorly.
8. The bearing is not working.

Repair

So, you have decided to purchase new bearings and follow a difficult but fairly economical path. For cars like the VAZ 2114, self-repair is a common thing. Such work, even in the absence of impressive experience and knowledge, is not difficult to do. Simple follow the instructions.

1. Disconnect the generator from the battery to deprive it of power.
2. Remove the timing belt.
3. Using wrenches of the appropriate size, remove the fastening nuts.
4. The film is removed, after which the sleeve is removed.
5. The generator itself is carefully removed from its seat.

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Subsequent work is more subtle and complex. After all, you have to disassemble the generator in order to get to the bearings. The task is not an easy one, but you can handle it yourself.

• There are nuts on the generator housing that need to be unscrewed;
• Remove the cover and remove the regulator from under it. This element is responsible for brushes and tension;
• Disconnect the stator from the cover. This operation should be done as carefully as possible so as not to damage the copper winding;
• Sometimes the housing can become rusty, making the stator difficult or even impossible to remove. In such a situation, arm yourself with a hammer and an impact screwdriver. With the help of these tools it is necessary to deliver the most accurate blows. This way you will be able to divide the element into blocks;
• Separating the generator from the stator, you will see both bearings - front and rear;
• Remove the damaged component and install a new alternator bearing in its place. Don't forget that there are two of them. For prevention, you can replace both at once, even if one of them is in completely good condition;
• Assembly is performed strictly in reverse order.

Working as a puller

Important Tips

There are several questions that you should know the answers to before you begin the job of replacing alternator bearings.

1. Installation must be carried out using a special press. Theoretically, it is possible to install a new element in place of the damaged one with an ordinary hammer, applying directed blows to the bearing. But this way you can damage the new spare part, plus additional damage to neighboring elements.
2. Make sure the new element is firmly in place. Only after this proceed with installing the pulley and impeller.
3. When purchasing a part, ask the seller what kind of vehicle this particular bearing is designed for. These parts differ in size.
4. During the replacement process, be sure to check the tension of the timing belt. If the tension is not strong enough, voltage sag may occur.

If the above operations do not produce results, you should look for other potential problems with the generator.

Disassembled generator

Consequences of a malfunction

A faulty bearing, like any other failure associated with generator components, leads to its malfunction. It is impossible to predict the consequences of such a breakdown.

Let’s just say that both an inadequate and an excessive charge pose a potential threat.

1. If the alternator does not provide sufficient charge, the battery will quickly discharge, so you will not be able to start the car or go anywhere.
2. If a charge is too powerful, the consequences are even sadder, since this puts the entire electrical circuit of your VAZ 2114 at risk.

Problems and solutions

There are several common generator problems that are more than possible to repair. Here you just need to follow certain recommendations and rules.

We invite you to familiarize yourself with the malfunctions and methods for solving them in the corresponding table.

Some motorists consider a number of car-related problems to be trivial and not worth paying much attention to. But they can sometimes lead to very serious, unpleasant consequences, the elimination of which will require not only a lot of effort and time, but also an impressive amount of money.

The generator and its components, including bearings, are complex elements that are quite difficult to repair or replace. If you do not have experience and skills in such matters, it is better to entrust the work to specialists.

What causes the battery light on the dashboard to light up?

When the ignition key is turned, the system displays all instrument icons on the panel. This is done to check the operation of the machine, therefore the bulbs are fully working. Next, we start the engine and the lights go out when the machine is running properly. If one light does not go out, then this indicates a problem.

Battery icon on dashboard

Also, if the battery icon does not go out, this indicates that the generator has low voltage or no voltage.

Signs of generator failure

There are several signs by which a driver can determine that the VAZ 2114 generator is faulty.

Here are the main ones:

• the corresponding lamp on the instrument panel indicates that the battery is not charging;
• insufficient or overcharging of the battery;
• weak headlights and poor performance of the wipers (with the engine running);
• excessively bright headlights;
• the electrolyte in the battery boils;
• appearance of extraneous noise in the generator set.

Generator diagnostics for VAZ 2114

Due to the fact that charging decreases, less and less current will flow into the battery. Thus, to power the entire on-board network, you will need another generator and a battery, which will discharge over a certain period of time. However, high voltage will be more dangerous. As a result, lamps and ECUs may burst and fuses may blow. In order to diagnose the VAZ 2114 generator, you will need a multimeter.

For the purpose of high-quality diagnostics, do everything carefully:

1. Start the engine. If there is any damage in the rotor winding circuit, then you will see that the lamp located on the panel is lit.
2. The engine needs to be warmed up to a certain temperature and the headlights must be switched on.
3. We measure the voltage at the battery terminals. The main condition is that the rotation speed of the kolevana should be approximately 2600-2900 windings per minute.
4. If the generator is faulty, the reading on the voltmeter will be about 13 V.
5. When the lights and radio are turned off, the voltage should increase to approximately 15 V. This is the highest value.

Generator diagnostics

When you carry out diagnostics, you need to pay attention to the sounds with which the rotor rotates. Bearings can often fail.

Checking the voltage regulator

Along with the voltage regulator, we also check the brush holders, since if the circuit located between the brushes and the regulator is damaged, we will be able to see a non-working mechanism.

Circuits for testing the voltage regulator: a – produced since 1996; b – produced before 1996; 1 – battery; 2 – output “ground” of the regulator; 3 – voltage regulator; 4 – terminal “Ш” of the regulator; 5 – terminal “B” of the regulator; 6 – control lamp; 7 – terminal “B” of the voltage regulator

• First you need to check the brushes. If they are worn out or broken, then the generator brushes need to be replaced.
• Be sure to prepare the necessary parts for testing, such as wires, battery, 12V light bulb and AA batteries.
• A regulator that is working correctly will show a voltage of approximately 14V. If the voltage is higher, then be sure to stop the flow of voltage to the brushes. A burning light during testing tells us that the problem is caused by a broken regulator. A light that does not light indicates that the circuit that connects the regulator and the brushes is broken.
• The regulator needs to be changed if the voltage is less than 13.2V when the on-board system is operating. Too high voltage can also result from a broken regulator. The stage of cleaning and installing the voltage regulator is similar to the stage of replacing the generator brushes, because not only the brushes are removed, but also the voltage regulator.

Replacing generator brushes

Replacing brushes in a generator is a fairly simple job; you only need a screwdriver and a little skill. You may also need a 10mm wrench or you can use pliers. They will be needed to disconnect the terminal from the battery.

provaz2114.ru

The reasons for replacing the VAZ 2114 relay regulator may be the following:

1. No charging.
2. The headlights glow dimly in the dark.
3. Low tension.

The replacement will look something like this:

1. Disconnect the ground wire from the battery.
2. Disconnect all wires from the brush block.
3. Unscrew 2 bolts and remove the brush block.
4. The length of the brushes should be about 0.5 centimeters.

A relay-regulator is connected to the brushes, therefore, when replacing the first unit, you also change the second unit.

Replacing the VAZ 2114 alternator belt

The belt length for this model will be 700 mm. The replacement time will take you a little more than 10 minutes. When I replaced it, I checked it with a multimeter. I also added brake fluid.

It is especially important to monitor the tension of the belt. If you tighten it loosely, then you can reduce the voltage in the on-board system. In this case, a whistle will be heard and the light on the panel will begin to blink.

Possible malfunctions: signs and causes

The generator set is an electromechanical device. Therefore, two types of faults are possible: mechanical and electrical.

A sign of mechanical problems is increased noise during generator operation. The cause of the noise is the destruction of the bearing pressed into the cover. It constantly experiences large radial loads and therefore has a short service life.

An over-tensioned drive belt of the VAZ 2114 generator shortens its service life. Therefore, it is necessary to monitor its tension and condition. The generator will not work if the belt breaks.

Signs of electrical faults are:

• the generator does not charge the battery;
• charging voltage too low;
• charging voltage is too high;
• the unit is heating up.

You can determine the malfunction using a multimeter. You can judge an insufficient charge by dimly lit headlights and slowly working wipers, as well as by a control light that blinks or is constantly on. If the charge is too high, the electrolyte in the battery boils and the headlights shine too brightly.

Repair of VAZ 2114 generator

This process is quite complex and serious. To accomplish this, you must have certain knowledge and practical experience. Otherwise, you should contact specialists.

How to remove the generator

1. Remove the protection from the engine.
2. To repair, you need to loosen the tension roller.
3. We remove the upper and lower bolt that holds the generator.
4. Remove the compressor and air conditioner mounts.
5. Remove the drive belt and remove the generator.
6. Unscrew the top bolt that secures the air conditioning compressor.
7. We take out the compressor and hang it, the tubes will easily support it.
8. The bolts that hold the generator must be unscrewed.
9. When the generator terminals are disconnected, pull the terminal holders down.
10. We install the VAZ 2114 generator according to this diagram, only in the reverse order and do not forget to install the drive belt.

If there is a short circuit in the wiring, we will definitely find out the reason. Unsoldering of any slip ring could occur. In this case, we unwind the coil with the defect back, and then remove the broken end and solder the unwinded drive. You can also solder the wires.

If problems occur with the relay-regulator, which occurred due to a weak charge, then it should be changed. The operation of the diodes may also be disrupted, since this is located in the generator. They are replaced when replacing the generator.

If you hear strange noises, this is a sign of wear on the rotor bearing. It needs to be replaced. But violations can also be associated with the lack of play in the bearing. For it to work properly, you need to fill it with oil.

Bearing sizes and manufacturers

Before replacing a bearing with a new standard product, you need to buy it. The marking of these standard consumables is complex; the numbers in it are deciphered using special tables. Moreover, bearing designations according to GOST 3189 do not coincide with the markings of foreign manufacturers, so the user needs to know the following nuances:

• the marking consists of three parts (main, left, right), and blocks inside them;
• in the left and main parts the blocks are located from right to left, and in the right block on the contrary, from left to right;
• in cars, the front bearing of the generator most often has the designation of the main part 302 or 303, and the rear bearing 202 or 203;
• usually radial ball modifications with code 0 (0302 or 0202) or angular contact balls with code 6 (6303 and 6203) are used;
• therefore, for the specified parameters, you can decipher the dimensions using the table below;
• For foreign-made bearings, similar markings are used.

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Marking of bearings according to GOST 3189

Table for deciphering bearing sizes by marking

Designation of imported bearings

The suffix (right side of the marking) of imported bearings contains additional information. For example, letters and numbers can represent:

• 2RS and RS – double-sided and single-sided rubber seals, respectively;
• N and NR – groove on the outer ring without a latch and with a latch, respectively;
• J – steel holder;
• Z – sheet protection on one side without seals.

The main problem for a car enthusiast when doing self-repair is the variety of bearing sizes inside the generator:

• it is difficult to guess the markings before disassembling, when the car is still running;
• after dismantling and disassembling the generator, the dimensions and markings are known to the owner, but he has to go to the store in a different car;
• in some stores, sellers practice a convenient system - the car owner takes 4 bearings 202, 203, 302 and 303, and returns two of them back.

These modifications have dimensions: