How do I tighten my alternator belt?

[jbg]

Hello,

According to my records I replaced the alternator belt about 1 year ago because it was slipping (chirping) under ~1,500 RPM. Now I do not drive the car a lot, but I have noticed once again the belt is chirping. I can rotate the belt 90+ degrees in the middle of its longest pulley distance. I feel it needs to be tightened. Empirically, when doing a job like this, I am used to a threaded rod that the alternator can be adjusted on. This adjustable mount is fastened, or held in place, by another nut/bolt. The other day I could not determine if this was the case do to sticky oil near this end of the engine. (I have confirmed that said oil is not touching the belt nor its pulleys). I only have the D24(T) manual for engine repair, I do not have one that covers this seemingly trivial question.

Can anyone confirm my assumptions, or set me straight? Naturally a picture or diagram would be fantastic!

Thanks.