Of course, a complete repair of the generator is not shown to be done with your own hands, but verification can always be provided. The most important component of the test will be a multimeter, or, as it is also called, a tester.
Now we start by checking the regulator relay. How to check the generator with a tester? Very simple. We take a multimeter and put the switch in the "measurement" position. We start the car and measure the voltage at the battery terminals, as well as at the outputs of the generator itself. Its component should reach no more than 14.2 V. Then, the accelerator is pressed and the voltage is re-measured. Deviation from the norm even half a watt up means the regulator is not working properly.
The generator also includes a diode bridge, which also needs to be checked. In this case, switch the multimeter to the "Sound" mode and begin to test. It is worth noting that this part includes 6 diodes, they are divided into 2 equal parts - positive and negative. When checking, a squeak will occur. But it is worth noting that the verification should be carried out in both directions. If the squeak occurs in both cases, then you need to replace the part, as this symbolizes that the bridge is broken.
Now
we learn how to check the generator, namely its parts - the rotor and stator, without which its work is unthinkable. First, disconnect the stator lead from the
diode bridge. Since it is a cylinder with an internal winding, it is worthwhile to first make a visual inspection. Next, a multimeter is taken and the "resistance measurement" mode is turned on. A healthy winding will tend to infinity on the scale of the device, but readings below 50 kOhm mean a quick replacement of the generator.
How to check the generator and stator is more than understandable, but the rotor is a bit more difficult to handle. What is this device? This is a metal rod with an internal field winding, on one of its sides there are contact rings with which the brushes slide along them. Just like the stator, the rotor after extraction must be inspected for damage. It’s best to check the generator, find out from knowledgeable people, or go to a car repair shop, since it is preferable to inspect the rotor using specialized equipment. The brushes that are placed on this part have a certain amount of protrusion from the holder, which is not more than 5 mm. It is also worth evaluating how freely they move on the holder and whether they are worn out. When installing the generator in place, this must be done with caution and carefully checked.
Also, how to check the VAZ generator can be found in the special literature. Do not forget about checking the bearings of the generator, because their incorrect operation can lead to serious damage. When these parts are worn out, a characteristic noise arises that is clearly audible even if you are near a car. Depreciation may result from improper tension on the alternator belt.
Well, now we know a little about how to check the generator on our own, and yet it is better to turn to specialists for help.