How do you install a AC belt? on 2006 BMW 750Li

I installed a new water pump and now I can't get the AC belt on.

Asked by for the 2006 BMW 750Li
Hey Greg, any problems with the repairpal site, or is it just me?
ya no new posts, someone knocked us off 1 and 2 and that sucks.lmao
Thst's cool! Kicked us to the curb! Hahahaha.
Thanks man!

your welcome, have a great friday