Pully right under alternator... what do i torque it down to?

[JehalinTA]

Hey Im changing out the tensioner pully under the alternator that runs the AC thing. The write up on Intall university says to tighten it to 35 foot lbs of torque.. is this the same... and do I just remove the center bold on the pully for the belt to come off.. also do I have to take the drive belt off too in order to do the AC belt install. Last one... its making a rattling noise now... what will happen if I dont change out a pully with a bad bearing? Thanks Guys

[JehalinTA]

Do I torque it down to a certain spec or is that not important?