Serpentine Belt on 1995 Lexus GS300

In trying to replace the serpentine belt on my 1995 lexus GS300 I've come across a problem. I can't get it to fit.

Here's what I've tried: Loosening the tensioner bolt, this didn't seem to make any difference at all. There only appears to be one slide bolt behind the power steering pulley, do I need to loosen this in order to slip the belt on properly?

1 answer
The serpentine belt slips on only one way by pulling the belt tensioner backwards, nothing should be loose, everything should be nice and tight. There is a diagram on the inside of the hood, follow those steps to install the belt.