Neon 2000 driving belt tensioner

Hi everybody,

I have 2000 Neon and a week ago I started hearing skweking/grindig sound from the driving belt area.

I had the problem diagnosed and they said the noise was coming from the driving belt tensioner.

Do you guys know what tool I have to use in order to remove the old tensioner ?

It looks there is one bolt only, but you cannot see what it's head looks like, because there is only an inch space between the tensioner and the fender.

Thanks

You sure its not just a loose belt?

It is not a loose belt.
I changed the belt with a new one