Examination
To complete the work you will need a multimeter.
1. Prepare the car for work (see "Preparing a car for maintenance and repair").
2. Check the electrolyte level and the state of charge of the battery, add distilled water if necessary and charge the battery (see "Battery pack - Maintenance").
[The article is taken from an online resource: vazbook.ru]
3. Check the tension of the generator drive belt and adjust it if necessary (see "Generator Drive Belt - Adjustment and Replacement").
4. Start the engine, use the carburetor air damper control handle to set the crankshaft speed to 2500-3000 rpm and turn off all consumers except the ignition system.
5. Measure the voltage at the battery terminals. If the voltage does not exceed 14.5 V, the regulator is working properly. If the voltage is less than 13.9 V, you need to check the contacts in the electrical circuit connections or the regulator is faulty.
Removal
1. Disconnect the wire from the negative terminal of the battery (see "Battery - Removal and Installation").
2. With a socket wrench by 8 mm we unscrew the two nuts securing the regulator.
3. Having marked or remembered the location of the wires, we disconnect them from the terminals of the regulator.
Installation
The regulator is installed in the reverse order.
Attention! When connecting the wires to the controller, do not mix them up. If connected incorrectly, the voltage in the power grid will increase significantly, which will damage the power consumers. The orange wire is connected to terminal "15", and the gray wire is connected to terminal "67" (see "Electrical diagrams").