The generator node converts mechanical energy into an electric current used to power the electrical equipment of the car. If the generator for certain reasons functions incorrectly or completely refuses to work, it will affect the work of the vehicle as a whole. About this further in the article.

Which generator on VAZ 2115

VAZ 2115 cars are mounted three-phase alternators of the AC type 94.3701, which have a built-in straightening unit and an electronic voltage regulator. They have the following specifications:

• The gear ratio of the motor generator - 1: 2.4.
• The highest rate of recoil current reaches 55 A at 5 thousand rpm. and 13 V.
• Frames of adjustable voltage - 14.1 ± 0.5 B.

Control the operation of the device helps a special checklist, which lights up while the ignition is turned on and goes out after it starts. But if the light continues to burn, this indicates the presence of faults.

Symptoms of the malfunctions of the generator 2115 and how to eliminate them

If during the inclusion of ignition on the dashboard does not function sensors and indicators do not light up, the reason may be:

• Cutting wiring. Diagnostics is performed by checking the zero wire to open.
• Safety device output. In this case, it needs to be replaced.
• Cutting the circuit block connecting the safety unit and the ignition switch. In this case, check all the wires.
  

If all the instruments on the shield are functioning, but the indicator does not turn on, the reasons are as follows:

• The indicator itself broke. Replace it.
• Open in electrocups. Diagnosing contacts and wiring.
• The contact rings were oxidized, the brushes were flooded either. In this case, clean the rings and replace the generator brushes.
• Damage to the voltage regulator. The device must be replaced.
• Circuit in plus valves. Remove the generator and change the rectifier block.

If the indicator is bright when the ignition is turned on, and after starting the engine more dim, the reasons may be:

• Slises the strap. In this case, you can try to pull it up. If it was worn out, the only option is to replace.
• The valves failed on the block or damaged the diode elements of the emission of the excitation winding. All elements are subject to replacement.
• Open winding or closure in the stator. Changing the problem by replacing the stator mechanism.

If the indicator on the dashboard continues to burn after the motor starts, most likely the reason is the voltage regulator. You need to replace the device.

What are the extraneous noises in the operation of the generator, possible malfunctions and how to eliminate them

Not rarely after the launch of the DVS drivers notice uncharacteristic to function the mechanism noise, which may be due to:

• Circuit on valves. In this case, it is necessary to change the rectifier block.
• Damage to bearing elements. They are not subject to restoration, so the bearing replacement is performed.
• Circuit on the mass of the stator winding. Replace the stator to eliminate the fault.

Diagnostics of the 2115 generator with their own hands (in detail)

You can check the generator without removing the device from the car. To diagnose you will need a voltmeter or multimeter, as well as an assistant. Order of work:

1. We start the engine and let him warm up. Include all electrical equipment, which, as a rule, apply when traveling is a video recorder, radio, a stove, optics, rear window heating, and so on.
2. Then we switch the multimeter to the Volter mode and connect it to the battery. The helper must be pressed on the gas pedal so that the motor turnover rose to 3200. If the multimeter will show the voltage at least 13 volts, then the generator functions in normal mode.
3. If the voltage below 13 volts is most likely the reason lies in a bad belt stretch or damage to the electrical circuit, as an option, the contacts could be oxidized, in which case they need to be cleaned. The reason can also be hidden in the wear of the brush node and breakage of the voltage regulator. Much less often the problem lies directly in the aggregate itself, however, this option cannot be excluded.
4. Then disconnect all electrical equipment and check the voltage level again with similar revolutions. As a result, the voltmeter should show no more than 14.7 volts.

Choosing a workplace

To replace the generator brushes, you do not need to remove the entire unit - work can be performed only by one screwdriver, pre-borrowed the entire electrician. However, if you need to replace the bearings or the diode bridge, the generator is removed.

Tools, fixtures, consumables

To remove and disassemble the generator, materials and tools will be required:

1. Screwdriver.
2. WD-40.
3. Spanners.

How to remove, disassemble the generator and eliminate malfunctions with your own hands

Order of work:

1. Disconnect the minus terminal from the battery, thereby leaving the car.
2. Remove the nut from the contact screw and disconnect the power wire.
3. Remove the fastening screw of the belt tensioner.
4. Remove the two fastening screws of the stretch frame.
5. Processing all WD-40 connections.
6. Fully unscrew the bottom and upper mount. Remove the splay from below.
7. Remove the generator and proceed to his disassembly.
8. Remove the bolts fixing the generator cover.
9. Next, carefully unscrew the condenser fastening bolts and the phase winding to the rear cap of the generator. If you need, turn off the condenser from the rectifier.
10. We unscrew four more bolts and remove the back cover with the stator and the rotor.
11. Helm the rotor in the vice and completely disassemble through the cutting of nuts and dismantling pulley.
12. Replace all the elements failed - diode bridge, condenser, bearings, voltage regulator and brush.
13. After replacing the faulty items, collect an aggregate in the reverse order.

How to check the tension of the generator belt

If the strap tension is insufficient, during the operation of the motor on the instrument panel there will be a weakly burning light control light bulb. It happens that the light is on, it burns. Also, the insufficient tension of the generator belt will indicate a whistle appearing when the light is turned on. To eliminate the breakdown, follow these steps:

• The key to "17" unscrew the nut that crept the generator to the top bar.
• Load the mounting blade between the motor block and the generator body.
• Strengthen the tension by pulling the blade towards the radiator.
• After tensioning the belt, we tighten the nut.

Tips Pros: In which cases, the generator is better to replace completely

As a rule, the generator serves a long time and often his breakdown is not a reason to throw it out, it is enough to replace the defective elements of the generator device so that it function normally again. Fully change the generator in the event that its breakdown is serious and it is not subject to repair.