fan clutch pulley replacement m103

[ericzacha]

I have a fan clutch assembly that is making a lot of noise. Had to replace my radiator anyway, so I thought I would do the jobs at the same time. I've done several searches on this. I have everything done up to the point of taking off the fan clutch assembly including taking off the fan Is this as simple as pulling off the bracket assembly and putting on the new one? I read something about sealing one of the bolts but someone else said there is an O-ring so now I'm a little unsure. Is there a gasket I need?