C4 Citroen alternator noise

as is done to know the tension of the Citroen C4 Gasoline alternator and the alternator disassembly

Good afternoon Jejio9. The tension is determined by the automatic tensioner, and the alternator is fastened with two screws that hold it to the support, 13m/my head by the pulley side.
PS: Before removing the alternator, you have to disconnect the battery and make a scheme of the leash position, so as not to get the picha a mess.
That there is luck ...

Thank you very much Pudasetos 71 for the answer I will put it into practice, because I fear that because of the noise that the alternator has gone the bearing.

Release the strap and turn the accessories that moves the belt, it may be elsewhere. If you see that they do not have a noise from those that bite, the engine starts without a strap, it is not that the noise comes out of the distribution.