DIY repair of a generator on a vaz 2110

In detail: do-it-yourself repair of a generator on a vaz 2110 from a real master for the site my.housecope.com.

Welcome!
A generator is an electrical appliance that supplies current to the car's on-board network and charges the battery when the engine is running, if it fails, then the first problem that starts with the car is the battery charge lamp (we'll talk about this lamp a little later) and on the car in the direct sense after that you can't drive, the whole point is that the ignition system of any car that runs on gasoline consumes electricity and conducts it (high-voltage wires, spark plugs and other units are connected), thereby the engine is running, and if suddenly the battery runs out and current will no longer be supplied to the on-board network, then the car will simply stall and will no longer start until the battery is charged again.

Note!
To carry out the generator repair procedure, you will need to stock up on: Necessarily a multi-meter and, if possible, a control lamp, as well as a screwdriver, various kinds of keys (spanners, caps, and so on), in addition, you will also need a marker and a fine-grained skin!

Summary:

Note!
As you already understood, the best way to check is with the help of a multi-meter, which has a voltmeter function (and everyone has one), so if you still decide to check it, then remember the current that should be on the battery when the engine is running equals about 13-14.5 volts, if it is less then either the battery is completely discharged, or the generator has become unusable, in this case, try to accelerate, for this, briefly press the gas pedal and remove your foot from it, if the current supply has increased, then the battery is discharged , if nothing happened, then try to do this again and remember, if the current is less than 12 volts, which is no longer acceptable, then after a very short time the battery will be completely discharged and you will no longer be able to start the car (To start the car, you need at least 11.5 volts , if the battery produces less, then starting the engine will already be problematic)!

Video (click to play).

Note!
The generator is not very difficult to understand, it is difficult to check it, especially if you don’t know how to use the multi-meter, and even if you can, there may still be errors, it’s just that the multi-meter will not always be able to show accurate data (Each has its own error) and therefore we recommend that you, before proceeding to work on disassembly, simply disconnect the cover from the generator and check the brushes (They most often fail) and, if necessary, replace them with new ones (By the way, if only one brushes are worn out, then even the generator can not be removed from the car, but simply disconnect the cover from it and, armed with a short screwdriver, unscrew the two screws that fasten the voltage regulator and then, taking out the regulator, look at the very brushes that are located on it and which must be replaced with strong wear)!

Disassembly:
1) First, remove it (How to remove a generator, read the article: "Replacing a generator on VAZ cars"), then on the sides, bend three latches that attach the plastic cover, thanks to which dirt and water does not get into the generator, after the latches will be bent (just do not break them), remove the cover from the generator and put it aside, as shown in the small photo.

2) Then unscrew the two side screws that attach the voltage regulator to the generator (the screws are indicated by red arrows, and the regulator itself is blue) and then remove the regulator from the generator, well, only when you take it off, disconnect the wiring from it like in the photo in the corner shown, otherwise the regulator simply will not be removed from the car generator.

4) After that, unscrew the four screws that secure the diode bridge to the generator and bend the three wire leads that are connected to the diode bridge so that they allow it to be removed and do not interfere at all, after the operation done, do not rush to remove the diode bridge, but unscrew another screw that the capacitor secures or unscrew the nut that secures the wire coming from it, and only then can you remove the diode bridge from the generator, you can read more about this capacitor below.

Note!
Capacitor - thanks to it, the current coming from the diode bridge is leveled and goes to the battery more even, without interruptions and without strong fluctuations, you can remove it both together with the diode bridge, and separately, if you want together, just unscrew the screw that secures it (Indicated red arrow) and then remove, if you want separately, then unscrew the nut which attaches the capacitor wire to the hairpin (indicated by the blue arrow) and then remove this wire from the hairpin!

5) Next, take the marker in your hands and make a mark on both covers as shown in the small photo, after these marks are made, unscrew four screws in a circle (Three of them are indicated by arrows, one is not visible) and disconnect both covers.

6) Next, unscrew the nut that secures the generator pulley (It is indicated by the red arrow) and then remove the pulley, it can be most easily unscrewed by clamping the rotor (This is only when the covers are already disconnected) in a vice, but just clamp it gently, and even better put some cloth, as soon as the nut is unscrewed, remove the rotor shaft from the bearing which is in the cover (see small photo), then remove the spacer ring from the shaft and inspect it.

7) And at the end of all operations, inspect the last parts and check some of them, namely, inspect both covers, there should be no cracks or traces of deformation on them, check both bearings (Front and rear), they must rotate normally, do not stick where they should not and grease should not flow from them either, otherwise the bearings are pressed out using a special puller and replaced with new ones, then take the stator in your hands and inspect it, it should be in good condition and there should be absolutely no bare wiring, using a test lamp, check it, for this, turn on the control to the 220 Volt network and alternately connect it between all the terminals as shown in photo 1, with each connection the lamp should light up, otherwise the stator is faulty and the stator still needs to be checked if it does not close to ground, this is also done easily and with the help of the same control lamp, look in more detail at f from 2, there the lamp is alternately connected to all terminals of the stator winding, and the wire from the current source to the stator case, but only in this case the lamp should not light, if it is on, then this means that there is a short circuit and the stator must be replaced with a new one.

Assembly:
All the parts are assembled in the reverse order, only during assembly, orient the covers as they were installed before (Everything is done according to the marks), and the spring washer of the generator pulley will need to be placed with the convex side to the nut and the pulley fastening nut, tighten with a torque of 39- 62 N • m (3.9-b, 2 kgf • m), which can be done with a torque wrench and what else, during assembly, orient the capacitor (if you removed it together with the diode bridge) relative to the mounting protrusion on the cover , just like it is in the photo below.

Additional video clip:
You can see the process of overhauling the generator on VAZ 2110 cars in the video below:

Note!
Another process of disassembling and assembling the generator is shown in another video, you can also find it just below:

It is quite possible to repair a generator on a VAZ 2110 car with your own hands.You can either partially repair the element or completely replace it. It all depends on the specific situation and the degree of wear of the device.

According to the operation manual, a scheduled check of the condition of the generator should be carried out every 50 thousand kilometers. But this is provided that the device is working properly.

It happens that the generator starts to "junk" ahead of schedule, the battery is not charged properly. Actually, it also serves to ensure the operation of the power source to power all the car - the battery.

We advise you to rely not only on our instructions, and on video tutorials that will allow you to carry out repairs and replacements with your own hands even without much experience.

The first step is to determine if your generator is actually the source of the problem. To check, you need to carry out a number of sequential measures.

Start the engine and let it warm up to operating temperature.
Increase the revolutions of the crankshaft to about 3 thousand revolutions per minute.
Turn on all the headlights, activate the high beam, start the stove, emergency lights, heated glass, wiper blades. That is, all consumers of electricity should be turned on as much as possible.
Measure the voltage at the battery.
If the device shows less than 13V, then there is a high probability that a short or open circuit has occurred in the generator windings.
Another option is a breakdown of the voltage regulator, oxidation of the contacts of the excitation winding ring.

It is possible to check the presence of breaks and the condition of other elements of the generator only by dismantling it. But if you do not have any experience in disassembling the generator, then you should not try to climb there with your own hands. Replace the complete assembly or entrust the repair to professionals.To disassemble, remove and repair or replace a generator, you will need to do the following.

There can be several reasons for replacing a relay.

The purpose of the generator device in any car is to provide power to all energy consumers, as well as to replenish the battery charge. If this unit fails, the equipment in the car will be powered by the battery, and the latter, in turn, will not be able to charge. Therefore, when the first signs of malfunctions appear, the car owner should engage in diagnostics and repairs. How to repair a VAZ 2110 generator with your own hands, you can find a video and a photo of this process below.

For what reasons, the generator unit does not charge, what to do if the device does not work on the injector, how to remove the unit, how to disassemble it in order to replace the slip rings? First, let's take a look at the structure of the mechanism, as well as the principle of its operation.

a housing in which all components are located and equipped with a bracket with which bolting is carried out;
rotor or armature with collector;
stator;
voltage regulator with brushes;
pulley;
rectifier unit.

As for the principle of operation, the generator unit converts the rotational motion that comes from a working power unit into electricity. By means of a belt drive, the force is transmitted from the pulley. When the rotor device rotates, a magnetic flux is generated in the mechanism, its power is regulated by a regulator.

The voltage itself comes from the collector rings to the brush assembly. The rectifier unit, which structurally consists of diode elements, supplies energy in one direction. Thanks to the regulator, the output voltage will be in the range from 13.6 to 14.7 volts. As for the rotation of the shaft of the rotor mechanism, it is carried out in bearing devices, and the ease of rotation depends on their correct operation.

If there are malfunctions in the operation of the VAZ 2110 16 valve generator unit and there is no excitation, then first of all you need to check the power wire. The diagram will help you do this.

Before unscrewing the pulley and disassembling the mechanism for its repair, modification or installation of protection against water, the unit must be tested.

Moreover, the diagnostics of the device is carried out on the installed generator; for verification, you will need a digital voltmeter or multimeter:

The engine must be turned off; in this state, the voltage in the on-board network of the vehicle is tested. On average, this figure should be around 11-13 volts.
After the measurement, the car engine must be started, then the measurement procedure is repeated. In the event that after one minute the values on the display do not change, then the generating set will not charge. If the device is working, then the value of the voltage in the mains will increase to 14.2-14.7 volts. In the event that the voltage exceeds the threshold of 14.7 volts, this indicates that the regulator is not working.
If the problem is that the generator unit is howling or whistling, then you should first diagnose the tension of the drive belt. In the event that the belt is poorly tensioned, it will need to be adjusted (video by Dmitry Pristrom).

So, why does the generator device heat up and hum, how to protect the unit from the effects of water?

We suggest that you familiarize yourself with the main causes of unit malfunctions:

In what cases it is required to remove and replace the unit:

How to replace a device with your own hands:

How to sort out this unit in the "Top Ten" with your own hands and get rid of malfunctions - a detailed guide is given in the video below (video by Denis Legostaev).

It is not uncommon for car drivers to face a problem. The generator provides little or no battery power.
What to do, especially if the charge lamp on the instrument panel is on? It's simple. The generator needs to be repaired.

As you know, over time, some elements of the generator become unusable. This also applies to the component of the VAZ 2110 car.
Repairing a generator in this case will require a little patience and a set of necessary tools. And you can always buy a new one, but why spend money if you can do everything yourself?
In general, it is recommended to change it after 50 thousand kilometers.

When repairing a generator, you will need the following tools:

socket wrench 17 (it must have a special extension);
wrench 10;
ohmmeter;
three-grip puller;
a special mandrel to help extrude the front bearing;
a special mandrel to help push out the rear bearing.

These tools will actually help carry out all dismantling works on the VAZ 2110 on their own. The generator, the repair of which is directly related to dismantling, implies the following actions.

Correctly removing a part means already doing half of the job. In this case, you will need to do the following:

lift the car onto the overpass or drive into the inspection pit;
remove the battery by first loosening the terminals (dismantling the battery is needed in order to provide convenient access to the upper nut that fixes the generator);
unscrew the nut that fixes the generator with the adjusting bar (during the operation, use a socket wrench 17 with an extension);

dismantling a generator on a vaz 2110

first you need to remove the mudguard, which is located in the engine compartment;
then remove the alternator drive belt;
disconnect the wires from the center terminal of the stator and terminal 67;

remove the protective cap;
unscrew the nut that fixes the tip with the plus terminal to the battery (in this operation, a key 10 is used);

removing the nut securing the tip

after that, unscrew the nut fixing the generator with the bracket using the 19 socket wrench (the bracket is located on the surface of the cylinder block);
remove the long bolt and remove the generator.

Carrying out this operation, you need to be very careful so as not to lose the buffer sleeve.

To carry out work of this type, it is necessary:

thoroughly clean the generator from dirt;
using an ohmmeter, connect the positive wire to the terminal, and the negative wire to the generator case (if a value close to zero is shown, this means a breakdown of one of the diodes or a short circuit of the stator winding);

we check the positive diodes (using the above method, only the negative wire is connected to one of the bolts securing the rectifier unit);
we check the reliability of the fit of the brushes with slip rings and the absence of a short circuit in the excitation winding (we connect the ohmmeter wire to the terminal located on the surface of the generator);
remove the brush holder and make several clicks on the brushes (if they move easily, then everything is fine, and if not, then it should be replaced);
we check the absence of a short circuit in the rotor winding on the generator (we connect the ohmmeter wire to the generator case, the other one to the rotor ring and look: if a value close to zero is shown, then a short circuit is observed);

checking the absence of a short circuit

I would also like to point out some little things when checking this component of the VAZ 2110. It is not necessary to completely repair the generator if malfunctions of the rotor, capacitor, brush holder or stator are detected.
Replacing them will result in normal operation. In the event that a malfunction of one of the diodes is detected, the entire rectifier assembly is replaced.

Often, the cause of a generator malfunction lies in the bearings. Their check should begin with an external examination. We are looking for cracks in the clips, the presence of corrosion and other similar components.
In general, bearings should not have strong play and make noise. Ideally, they should rotate easily. If severe wear or damage is found, the bearings must be replaced.
So, if there is a situation when:

the generator howls - it means that it should be removed, disassembled, eliminated malfunctions in the stator and rectifier unit;
if the generator does not howl, then you need to tighten the nut for securing the fan pulley;
if, after tightening the fastening nut, the generator began to howl, it means that you need to wipe the brushes and slip rings with a rag soaked in gasoline;
if after that the generator howls - replace the bearings.

To check correctly, you need to rotate the bearing ring from side to side. This must be done vigorously in order to be able to recognize significant backlash.
The ring must rotate freely and not jam. Also, no extraneous noise should be heard.

rear bearing of the generator vaz 2110

The VAZ 2110 generator, the repair of which depends on the operation of all components, can also "junk" because of the front bearing. It should also be rotated from side to side while holding the pulley with your hand.
If jamming or noise is found, it is advisable to replace the bearing. Replacing the front bearing, as recommended by the manufacturer, can be done with the cover assembly, but it will cost a pretty penny.
It is advisable and more expedient to independently press out and replace the bearing, which is much cheaper without a cover. Often you have to replace the generator itself.
Do-it-yourself repair of a VAZ 2110 implies a thorough check.
Normal generator performance can be detected by applying the following steps:

unscrew the nut with a 19 socket wrench that secures the pulley and the impeller of the generator (use a screwdriver to hold the rotor);

loosening the generator nut

Not such a complicated system for the VAZ 2110. Do-it-yourself repair of the generator, after the nut has been unscrewed, implies the dismantling of all parts: the pulley, the cooling impeller, the locking washers and the segmented key.

generator parts disassembled

You can dig further with your own hands if the cause of the malfunction has not been found. Using a 10 key, unscrew the four nuts of the generator cover and remove the connecting bolts.
Then squeeze the front cover off the stator, dismantle the cover. It will look like this:Thus, the condition of the bearing is checked, which is described in detail above. Usually, the price for them in stores is low, so if any faults are found, it is better to replace them immediately.To repair the generator, remove it from the engine, then dismantle the cover, and remove the diode bridge under it. Taking a tester, we find a malfunction.We also carry out a visual inspection of the slip rings, bearings and windings of the VAZ 2110 generator. After a detailed troubleshooting and inspection, we proceed to the replacement or repair of faulty parts.In this case, the video will show clearly shown:

generator disassembly process - how to disassemble a generator;

check - how to check the generator;

replacement of bearings and slip rings - how to change the bearing of a VAZ 2110 generator;

diode bridge test - how to test a diode bridge 80A generator.

Such 80A generators were installed on VAZ 2110, 2111, 2112 cars.The generator set recharges the battery and powers the electrical equipment while the vehicle is in motion. Repair of the VAZ 2110 generator should be carried out when the first signs of a malfunction appear in order to prevent the complete failure of the unit.Three-phase automobile generators for VAZ 2110 have the following device:The generator unit is connected as follows:

1 - battery;

2 - generator set;

3 - block with safety devices;

4 - ignition lock;

5 - control light indicator of the battery charge, the element is installed in the instrument panel.

Wiring diagram of the generator with the rest of the nodes in the car

In accordance with the diagram, the principle of operation of the installation is as follows:

The driver inserts the key into the ignition switch.
The current is transmitted to the excitation circuit.
The armature element generates a magnetic field, which is subsequently fed through the windings of the stator mechanism. As a result, tension appears on its contacts.
With an increase in the rotation speed of the anchor device, the self-excitation mode begins in the generator set.
A rectifier unit located inside the unit converts the alternating current into direct current.
The voltage regulator comes into operation when the crankshaft speed begins to change. The time parameters are set at which the excitation wire is turned on.

Before checking the generator of a VAZ 2110 car, it is important to consider the following:

Diagnostics of the unit operation is carried out by the short circuit method. The unit is tested for spark.
When checking, do not connect the B + terminals to the D + ground.
It is not allowed to operate the generating set without activated energy consumers. Do not turn on the unit if the battery is disconnected from the on-board network.
When welding the car body, the battery and generator set conductors must be disconnected.
To diagnose the operation of the device, an ammeter or voltmeter is required.
The procedure for checking the operation of the valves is carried out by applying a voltage whose power is no more than 12 volts.
Before proceeding with the diagnostics of the device, it is necessary to make sure that all connections are of good quality and function, as well as the correct tension of the drive strap. It is optimal if, when pressing the middle of the product with a force of about 10 kgf, the degree of deflection is no more than 1.5 cm.

The device diagnostic procedure is performed as follows:

User Denis MECHANIK told about the nuances of performing diagnostics of the generating set of the domestic “ten”.

Repair of the VAZ 2110 generator should also be carried out when the bearing devices are worn:

Before checking, a visual diagnosis of the parts is carried out. It is necessary to make sure that there are no mechanical damages and cracks on the elements and in the cages. Bearing devices must be free from corrosion or the effects of corrosion.
Then the clearance and ease of rotation of the components is checked. When rotating, the bearing parts should not make noise. In case of serious wear or damage to elements, structural components must be replaced.
To diagnose the rear bearing component, the outer ring of the device must be shaken in different directions, and then sharply twisted. The rotation of the part must be free, gaps, as well as seizures, are not allowed. Otherwise, the element is changed.
To check the front bearing arrangement, hold the generator set shaft with your hand and rotate the front cover in different directions. When a component jams or noise appears during its rotation, the part is replaced.

Flickering of the optics can indicate malfunctions in the voltage regulator device.When the generator is inoperative and the relay is out of order, the headlights shine dimly, but as the speed increases, their brightness increases.

It is only possible to accurately determine the malfunctions in the generator's operation using a tester. Visual diagnostics of damage does not always provide an accurate result.

Alexander Dmitriev showed the procedure for diagnosing the relay of the generator device on the VAZ 2110.

Hello dear motorists! Today I will tell you how to repair a generator with your own hands. You may have already encountered such a problem, when the battery discharge indicator suddenly came on on the dashboard, this means that your car has lost its charging, and you will not have a long drive left, the battery will last for a maximum of 1-2 hours.

Do not rush to throw away the generator. Try to repair it first. The most common generator malfunction is brush wear.

To check the brush assembly, you need to remove the rear plastic cover by bending the three plastic clips located in a circle.

Remove the cover, unscrew the two screws and remove the voltage regulator.

Check the wear of the brushes, if the residual length of the brushes is less than five millimeters, feel free to buy a new voltage regulator in the store. Sometimes it happens that the generator does not charge or recharges the battery, this is also a malfunction of the voltage regulator. The normal voltage of the generator is 13.5 to 14.5 volts, depending on the engine speed and the load on the generator.

The next generator malfunction is a breakdown of the diode bridge. To test the diodes, the diode bridge must be removed. We unscrew the bolts that hold the diode bridge.

Bend the wires to the side.

Remove the diode bridge. How to check a diode bridge. Read here: How to check a diode bridge?

After removing the diode bridge, be sure to check the stator windings. We do this, turn on the multimeter in dial mode and check all three stator windings for an open. All windings must ring among themselves.

Next, we check the short to ground. We connect one probe of the multimeter to ground, and the second is alternately connected to the terminals of the windings. There should be no short circuit to ground.

Similarly, we check the armature winding.

We check the anchor, there is no short circuit to ground.

Now I will show you how to disassemble the alternator to replace the bearings. We unscrew the four screws connecting the two halves of the generator together.