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.

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.

This is interesting: Repair and replacement of the gear motor of the VAZ-2110 stove: practical recommendations

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:

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.

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.

Which generator to install

Most car enthusiasts strive to install a part with more power than the standard device recommended by the manufacturer. In this case, the most suitable options would be the Priora or Kalina models. The power of such devices is 115A, while the factory equivalent is only 80A.

However, if you install another generator, you will need to install a different pulley. This procedure is simple and does not require large financial expenditures.

Experienced drivers recommend installing an Eldix generator on the VAZ-2114, the power of which is the same 115 A. But such a device has a significant drawback - it is difficult to find spare parts for repairs.

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.

We tighten the belt

The tensioning process itself depends on the engine size of 1.5 or 1.6, since the VAZ 2114 model.

1.5 L engine:

1. We loosen the fastening of the VAZ 2114 generator.
2. Using the adjustment screw, we adjust the belt tension; if we need to tighten it, we act clockwise; if necessary, loosen the direction of movement counterclockwise.
3. When we have reached the required belt tension, we strengthen the generator and be sure to check the belt.

1.6 L engine:

1. In the same way as in the first case, we loosen the fastening of the VAZ 2114 generator.
2. Using a crowbar, we move the generator slightly away from the engine and tighten the belt; if it is necessary to loosen the belt, we move the generator in a different direction, i.e., towards the engine.
3. After completion, secure the generator and check the belt tension.

Important! After the work was done, the problem did not disappear, the voltage drop process continues, so the problem was not identified, be sure to check the generator.

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.

How to properly dismantle a generator

Removing the device consists of only eight steps. If you follow the instructions, the part can be removed in just 10 - 15 minutes.

1. It is necessary to disconnect the negative terminal from the battery.
2. For convenience, it is better to remove the crankcase protection.
3. Next, you need to loosen the belt tension. To do this, loosen two bolts that are located on the side of the part.
4. After the belt has been loosened, the generator must be slightly moved towards the engine and the rubber part removed.
5. Due to the fact that the generator is completely removable, the belt tension bar can be removed.
6. The next step is to remove all terminals and pipes from the air conditioner.
7. After the generator is disconnected from all pipes, you need to unscrew all the bolts that secure it.
8. Since the part at the bottom is attached to a long bolt, which is difficult to unscrew, you can remove the generator along with the hardware, and then unscrew it.

Installation of a new generator occurs in the reverse order and requires care.

We also recommend reading our specialist’s article, which talks about how to remove the generator on a Priora.

It is not advisable to overtighten the fasteners, as this may lead to damage to the integrity of the part.