A chain wrench is adjustable by "hooking" the next set of pins on the next link.
So you are gonna need a wrench with "more than" 18" of chain, maybe 24"? Or what ever is available.
Think a strap wrench would work?
How 'bout what I try when doing a similar task?
I wrap the original belt (or a sacrificial one) around the pulley, all of the way around the the pulley. I double it back on itself and shove a piece wood/ file/ flat metal/ etc into the "double back fold" (this would be the handle). Depending on the force needed, I might even "vise grip" my improvised handle to the belt fold to prevent slipping.
Basically, it's a homemade strap wrench.
Google "strap wrench" and click on "images" to see what you are sorta duplicating!
Return with a grin!
Friday, October 2nd, 2015 AT 7:23 PM