How best to replace the generator brushes. Detailed description of the replacement

The generator brushes are an important element automotive system The supply of electric flow and its removal. Without their participation, the car generator will not be able to produce tension.

Generator brushes - element information

Brushes you are interested in are made of graphite, so they are often called coal. They are used not only on the car with the engine internal combustion, but also on a wide variety of mechanisms and machines equipped with electric engine (Machines, lifting machines, urban public transport etc). Brushes are considered the most common EG-4.

This brand is suitable for installation on many cars of different years of release, as it has standard operational parameters. Less often use other products (for example, EG-61.), which are characterized by a high margin of strength due to their impregnation with special compositions.

Generator and brushes on it on domestic cars are under the right front pilla of your " iron horse" Find them easy. It is enough to open the hood to see the generator - its winding and two covers come to the surface, externally similar to tin cans.

When should I change the generator brushes?

It is noteworthy that checking the brushes (and if necessary, change them) You can without dismantling enough of the cumbersome generator. In addition, the need to look under the hood of the car and check the graphite brushes to you can sign up the following symptoms:

• unpredictable shutdown electronic devices in a vehicle that happens for incomprehensible reasons;
• reducing the lighting of the machine and external light sources;
• stress reduction;
• discharged unreasonably fast, which, besides, is then very difficult (and sometimes impossible) to charge.

Any of these symptoms speaks by the motorist that it is most likely to remove the old brushes and install new instead. You can check the old products on functionality very simple. It should be thrown away from the bank "minus", remove the voltage regulator and visually evaluate, on which graphite details that interest us are issued from their "shelter". Brushes need to urgently change in the case when their height is less than five millimeters.

Replacing the generator brushes - from A to Z

Immediately, let's say that this operation is very simple and does not require special skills from the driver. At first, as already mentioned, it is necessary to learn "minus" with rechargeable battery, then dismantle the regulator (it is located relative to the generator from the opposite side), after which the following steps:

• Carefully clean from the soot and dust the holder socket, as well as the pressure springs and the contact ring. This operation is performed using a brush with a mild pile. Sometimes it may be necessary to catch graphite brushes to the collector using glass shallow skins (its graininess should be about 100).
• Install new products and make sure that they are fluent in the brush holder.
• In the reverse order to assemble the node, and then connect to the acb previously the cable wire.

If you bought a prefabricated design (plus brushes regulator), its installation also does not cause any problems.

Turn off the "minus", with a "plus" wire, remove the cap made of rubber, after which you dismantle the block by unscrewing the nut-fastener. Then it will be necessary to remove the plastic casing and remove the three spring locks located around the perimeter of the unit. Using a crosshead screwdriver, spin the brushes along with the voltage regulator, and all the wires leading to it disconnect. Mounted the acquired prefabricated design on the vacation place. Operation Completed!

To replace the generator brushes to be accurately and quickly, it is necessary to be able to unmistakably find and dismantle. With the first item, everything is extremely clear: brushes, like the electric generator itself, practically, on all domestic production cars, are located on the right side of the hood, directly under the spotlight. Therefore, by opening the hood, you will immediately see the generator body, where there will be a winding and two small cylindrical covers - these are the most brushes, or rather their upper part. Cm. Video "Replacing the generator brushes" below

When replacing this mechanism, one of its two brands is used:

• Standard stamps of the EG-4 brand;
• EG-61 brand brushes with a large margin of strength.

How long can the generator brushes work?

According to the operational parameters established by manufacturers, the generator brushes are subject to mandatory verification, and if necessary, replacing, after 50,000 km of mileage. However, in each particular case, the brushes may require immediate replacement and earlier, and here the main thing is to know those "symptoms" that we will sign about the malfunction of these parts.

Here are four main occasion to check for the performance of the generator brushes:

• The electronics of the car begins to give unexpected failures;
• Drop in the level of illumination of all lighting devices;
• Decrease in voltage in the power supply of cars;
• Fast battery discharge.

Check and replacing generator brushes

Checking the generator brushes is performed without extracting the generator itself, which significantly reduces the time and complexity of work. This is done as follows:

• Disconnect "minus" from the battery;
• Dismantle the voltage regulator located on the other side of the generator;
• We make a visual assessment of the height of the lifting of the brushes from their nest.

If the height of the rise does not exceed 5 mm, then the generator brushes must be replaced. If the height of the lifting of the brushes is greater, they can be returned to the place, as the problem of failure in the work of the car lies in something else.

The procedure for replacing the generator brushes:

1. After the brushes are extracted and checked, it is necessary to carefully remove all the contaminants from the socket in which the holder is located. You should also clean the contact ring and clamping springs. This is done with a brush having a soft pile. IN rare cases You may need a small trigger of the bricks to the collector, through the emery skirt;
2. Then set new brushes, passing their unimpeded moving in the holder;
3. Install the voltage regulator;
4. Connect to the battery disconnected before the wire (minus).

Features of work with the prefabricated design

Often, motorists prefer to buy immediately and brushes, and the regulator coming in one set. In this case, replacing the generator brushes for the whole system will also be easy to:

• Disconnect from the battery wire going to "minus";
• Remove from the wire from the battery going to the "plus", the rubber cap;
• We carry out the disassembly of the block, unscrewing the fastener nut;
• We dismantle the casing of plastic;
• Pull out three locks-springs, which are located all over the perimeter of the old block;
• With the help of a crosshead, we unscrew the brushes (the voltage regulator is passing along the way, and the entire wiring that binds them is also disconnected);
• We carry out the installation of a new design, the place is completely free for it.

Video: Replacing the generator brushes

Each driver should know that during the operation of the car in it is actively. This is especially true for those who buy used cars, where a significant number of spare parts requires repair. If there are interruptions in the voltage of the car network, it may be necessary to replace the brushes of the VAZ-2114 generator.

Device operation

The operation of the generator system is necessary and ensuring the work of the electronic parts of the car. At the time of launching the motor, the starter is turned on, which is necessary for work. vehicle. If you do not spend periodic repair workThe frequent discharges of the battery will occur and lower the overall voltage. Because of this, it will first need to replace the brushes of the system on the VAZ-2114.

IN modern cars The generators are used on three windings to create an alternating voltage. Thanks to the electromagnetic field arising from them, an electric current is created, which is transmitted to consumers. This system has a special brush mechanism that removes the voltage from the contact rings.

Search for a problem

As a rule, the replacement of the generator brushes on the VAZ-2110 is carried out comprehensively. Often one breakdown can entail other malfunctions or new detail Quickly fails. The main breakdowns in the car system:

• arbitrarily decreases (less than 14.3 V);
• the instant discharge of the battery, as soon as the ignition is turned on;
• uncontrollable increasing charge;
• the charge does not enter the device.

Often these problems are caused by a cloth fault. This can be found in the following features:

• breakdown from low-quality care products;
• mechanical wear;
• broken rectifier.

Replacing the generator brushes for VAZ-2110 can be performed with their own hands. This process is not costly financially, but requires a lot of time due to a large number of actions.

Fixing breakdown

Before starting replacing the brush in the model 2110, you need to turn off the negative terminal, which supplies electricity into the car system. Disassembly is made through the vacation of the tension bolt. To do this, it is better to use a large score, which is moved by the generator. Next, you need a fastener bolt, which has a hat on 17. After that, the item can be freely removed. Be sure to be disassembled all cables from the system.

To change the brushes, you will need:

• discover the terminal from the battery;
• all wires are discharged from the system;
• similarly, power wires and a protective nut are removed;
• fixators are removed (usually 3);
• under the lid are the brushes themselves;
• remove them by unscrewing the bolts;
• insert new elements, after completing the size of the protruding contacts (the protrusion of at least 1 cm);
• if everything matches, the inverse installation is performed in the same order.

In the process of reverse editing a brush, you can spend complete. At the end of the work it is required to check the belt. Its tension should be up to 10 kg. To check this, special devices are used or defined "on the eye". The belt must dry out a little if it is pressed on it, and quickly restore its position under tension.

The replacement of the elements of the brush is carried out with their own hands and requires special attention to detail. The system is quite complicated, therefore the high risk of errors. Using the instruction, it can be made as correct as possible. This guarantees stable work Generator in VAZ cars and optimal energy supply of consumers.

Replacing the brushes in the VAZ generator requires compliance with the instructions and caution. There are many small components in this detail, whose work cannot be broken. At all stages, it is necessary to verify the performance of the elements.

Brushes are an alternator element intended for removing the received voltage. Performed from special graphite, because of which the brushes were called "coal." Their use is mastered not only on car generators, but also in various other electrical machines, such as engines. Such engines are used everywhere, ranging from elementary machines, ending with complex lifting mechanisms. Regardless of the kind of design, brushes are an important part, in connection with which their presence is mandatory for the work of the equipment.

On the automotive generators There was a single standard for the production of brushes. A prime example was the EG-4 brushes that had normalized parameters and allowed the use of almost any car generator.

Another development of the brushes was the increase in their strength stock. So, for example, the brushes of the generator that had marked EG-61 appeared. Their new properties were provided by the impregnation of the entire material with special components.

When is the replacement of the generator brushes?

When conducting various activities related to car service, various small details attract very little attention to themselves. Not exceptions are the brushes themselves, the fault of which almost always comes very unexpectedly.

Designers have developed the required resource of this element. Currently, it is about 50 thousand kilometers. Others compare this distance from 4 years of operation of the car.

In addition, there are certain norms that regulate permissible size Generator brushes during operation. The fact is that they are prone to erasure, as they have constant friction with the collector and during operation, decrease in size. For their constant contact, springs are provided that provide them with tight touch, even if they are erased. Nevertheless, sooner or later their length is limited, and the springs are no longer able to ensure the density of contact with the collector brushes.

Before the driver opens the hood and remove the brush node, initially, the fault of the brushes will be reported to the corresponding fault signs:

• Reduced onboard vehicle. If a voltmeter is provided on the instrument panel, its testimony will not correspond to the norm - the voltage will be less than 12 volts.
• Bad operation of light sources. For example, the interior lighting lamp will begin to acquire low shades when working.
• Inadequate behavior of all electrical consumers of the car. Possible shutdowns, reducing performance. Examples can serve as the same lighting lamp or an electrical fan engine that works with interruptions or works too slowly.
• Fast battery discharge. This also has a place to be. The fact is that the stress removed from the brushes becomes smaller and insufficient for charging the battery. Because of this, as well, many consumers begin to use a portion of the battery energy, which has limited capacity and, consequently, sits down.
• The latest and explicit feature becomes the inclusion of the appropriate lamp on the instrument panel. She suggests that the battery has ceased to receive food, and the diagnosis of the generator elements is necessary.

How to replace the generator brushes?

After discovering all the above features, it is necessary to estimate the status of the problem node. To do this, remove the brushes and check their length. It is worth noting that any work related to the generator brushes is absolutely not difficult in conducting and will not require any special skills and skills from the driver.

Procedure

1. Open the hood of the car and find the location of the generator. Usually, it is set not far from crankshaft And attached to the engine itself.

2. Disconnect the minus battery terminal.

3. On the generator, pull the plug with the wires that are installed in the "tablet" of the brush node. On old cars, the presence of "tablets" is not provided, however, there is such a plug in them.

4. Unscrew the screws on which the brush node is fastened. After he is free, pull it out. When performing this operation, it should be slightly bending the brush holder, as the brushes will interfere with its free outlet of the nest.

After that, make an assessment of the length of the brushes. Typically, 5 millimeters consider the norm. It is on such a minimum length that the protrusion of brushes from the holder is allowed. If this parameter is noticeably reduced, the brushes are replaced.

In case the brushes have a relatively normal length, but the voltage disappears anyway, look at their work part. If one of the brushes has a polished surface, and the other does not mean that only one of the brushes tightly comes into contact with the collector. In this case, their replacement is also necessary.

If the brush node has a normal length of the brushes, then the problem is most likely not in it.

5. Spend cleaning landing And install a new product in the socket. To do this, press the brushes with your finger to the brush holder and shove the node into the nest. As soon as they find themselves inside, they can be released. Check their contact density to the collector.

6. After that, tighten the screwdriver fastening screws to the generator.

7. Insert the plug with the wires back into the connector. It should also, check the reliability of the contact connection. If the contacts are rusty, make their stripping. In some cases, such a problem may also cause a reduction in network voltage.

8. Install the battery terminal back.

This replacement of the brush node completed. To avoid unnecessary onboard electronics, try to diagnose and replace the brushes in a timely manner. It will save you from the most unexpected troubles and will ensure uninterrupted car work.

The cause of bad battery charging can be a variety of and one of which is the used generator brushes. To check their condition, you need to remove them and inspect. All this can be done on Kalina with installed generatorBut I'll show on the removed. So, in order to remove them, we need:

1. Key on 8, or head with a small ratchet
2. Horn Key on 13
3. Flat screwdriver

Detailed description of the replacement

First you need to disconnect the minus battery terminal to avoid closure. After that, we remove the protective plastic cover, slightly squeezing three locks on it, as shown in the photo:

Then it is necessary to make a small power plug with a screwdriver, and pull up with an effort required for extracting. Personally, in my case, the wire was very tightly sitting on contact, so I had to try before removing it. It is better to do everything carefully, so as not to tear the soldering from the voltage regulator.

After that, you can unscrew two small bolts, as shown in the photo:

And the latter will be a big bolt, which is not necessary to turn to the end, you just can easily weaken:

And freely extract the voltage regulator together with the brushes, as clearly presented below:

The minimum allowable height of the brushes should be at least 5 millimeters. If during measurement this value is not achieved, then the part must be replaced with the voltage regulator.

If the item needs to be replaced, we buy a new one and make the installation in reverse order. The price of the voltage regulator together with the generator brushes to Lada Kalina will be about 350 rubles.