How do you change alternator pulley on a Renault scenic?

To change the alternator pulley on a Renault Scenic, first, disconnect the battery and remove the drive belt. Next, remove the alternator from its mounting by loosening the bolts and carefully extracting it. Use a pulley removal tool to unscrew the old pulley from the alternator shaft, then screw on the new pulley, ensuring it's secure. Reinstall the alternator, reattach the drive belt, and reconnect the battery to complete the process.