Checking the voltage regulator (Renault 19)

Depending on the engine variant (the picture shows a type "C" engine), the V-belt should bend when pressed with a finger (shown by arrow) maximum 6 mm (on a warm engine), otherwise, it is necessary to adjust its tension by loosening the generator tension bolts.



If you have any doubts about the serviceability of the voltage regulator, you can check its operation:

1. Connect the voltmeter to the positive terminal of the generator and the negative terminal of the battery.

2. The engine must run at 4000 rpm.

3. At load from 3 to 7 A (for example, the light and rear window heating or heating fan on) the voltage should be between 13.5 and 14.8 V.

4. If the voltage measured is higher, the voltage regulator is faulty and must be replaced.

5. Lower voltage may be caused by worn graphite brushes.

Checking and replacing graphite brushes

[Article reprinted from the website: renaultbook.ru]

To check any type of engine, it is necessary to remove the generator. If the generator has already been removed, it is recommended to check the generator in a car repair shop. There are the necessary measuring devices and tools, and other faults, such as mechanical ones, can be detected and eliminated there.



1. Place the generator on the workbench and remove the 2 screws in the voltage regulator.

2. Open the voltage regulator slightly to access the graphite brushes.

3. Measure the protrusions of the sliding graphite brushes.

4. If they are about 5 mm long, then depending on the type of generator, either the voltage regulator together with the graphite brushes, or the graphite brushes themselves with a holder.