How do you replace alternator belt on peugeot 306?

To replace the alternator belt on a Peugeot 306, first, ensure the engine is off and cool. Start by loosening the tensioner pulley using a socket wrench to relieve tension on the belt. Remove the old belt from the pulleys and install the new belt, ensuring it follows the correct routing. Finally, re-tighten the tensioner pulley to secure the new belt in place and check its tension before starting the engine.