I want to replace the serpentine belt on my XG350 as it squeals when
it rains. I took it in to Hyundai and they said the belt and tensioner
are all fine. It only squeals when it rains.  I know the bolt to
tighten and loosen the tensioner pulley is underneath by the oil
filter. Everything looks pretty space limited and I am doing this at
home with no lift.

Any tips on replacing this belt? Thanks in advance.