Alternator Drive Belt — tension adjustment (Peugeot 305)

1. Proper alternator belt tension is critical to extending its service life. If the belt is too loose, the battery may not be fully charged; if it is too tight, the generator bearings may wear out quickly. In any case, this will have an adverse effect on the belt itself, the service life of which will be significantly reduced.

2. The belt tension is adjusted by turning the generator, which must be fixed in the position corresponding to the correct belt tension.

3. Before adjusting the belt tension, check that it is correctly positioned on both pulleys. Make two marks on the outer surface of the loose belt at a distance of 100 mm from each other and slightly tighten the hinge bolts and the adjusting rod bolts.

4. Turn the generator outward to tighten the belt. You can push the generator out using a wooden lever, but you can only push it in from the generator pulley side, otherwise you can damage the generator housing or its rear cover.

5. Tighten the belt so that the distance between the marks made increases to 101.5-102 mm (for a new belt) or 101.8-102.8 mm (for an old belt).

[Source can be seen at peugeotbook.ru]