Hey there , #1,
Ah ha!....I guessed the chains were the problem.... I was right, that feels good. And good for you, too.
To get the alternator off. You'll need to back up a bit in your photo.
1. First, mark position of housing to the alternator for replacement later.
2. Put the six 10mm nuts back on. Hope you did the same for the air guide you removed from it.
**Also, you should have taken a photo of how wires hook up, too.
3. Then get a 6" puller like in my photo here and remove your 11 blade fan from the alternator by centering it to the threaded spindle arm protruding out of the alternator. 4. After fan is detached, remove the 10 mm nuts again from the back.
5. Then, still face down, use a rubber mallet to gently tap on the six thread stud ends sticking through the housing frame. The alternator should just drop down onto the towel underneath eventually... or you may have to prop it up off he table a bit to make room for it to fall. I suggest you put a soft towel underneath everything as you work.
Now you are ready to sandblast and paint as you need....not the alternator, or course. I'm painting my housing red, polishing and clear coating my fan, and the chrome strap will be "Mother" polished.
You can get these 3 or 2 jawed pully sets, 4 pullies per set, at HarborFreightTools.com for under $30 or 3 pullies for under $20. By mail or go to the stores in NY..... they have 7 in your state. Albany, Rodchestor, Saracruz, Buffalo, etc. I bought my two long arm floor jacks there and my 2000 LB. engine stand. Go to the site for 'retail store" phone #s and addresses. Great place and prices are better.
Hope this has been helpful to you, RelaySwitcher / Josh