Generator Maintenance (VAZ-2109)

After the first 2,000 km and every 15,000 km, check the condition of the alternator drive belt and adjust its tension if necessary.

Every 60,000 km of run, clean the generator contact rings with fine-grained sandpaper, check the wear and fit of the brushes to the rings and, if necessary, replace the brush holder with brushes. To perform these works, it is necessary to unscrew the fastening screw and remove the voltage regulator 12 (see figure 97) with brush holder.

To avoid breaking the brushes when removing the regulator, first insert a screwdriver blade between the regulator body and the brush holder and partially pull the regulator out of the generator, leaving the brush holder in place. Then tilt the regulator and remove it together with the brush holder from the generator.

The brushes must move freely in the brush holder and not have any chips. If the brushes are worn out and protrude from the brush holder by less than 5 mm, then it is necessary to replace the brush holder with brushes. To replace, pull the brush holder out of the voltage regulator housing by pressing the "B" terminal. Before installing the voltage regulator with a new brush holder in place, it is necessary to blow out the socket in the generator from carbon dust and wipe off oil mixed with carbon dust.

To avoid breakage of the brushes, before installing the regulator with the brush holder in place, do not insert the brush holder completely into the regulator, but only partially push it in and insert it into the generator in this position. After installing the brush holder in place in the generator cover, gently press on the regulator to push it into the generator.