Hi Mark,
Yes I did use a puller. An old adjustable one I've owned for, well, I bought it at a Western Auto store if that means anything in your area. The pulley is tapped if you want to make one up out of bar stock. I drilled some flat iron to make a sort of Y-spanner to hold the pulley while loosening the nut but 1/4" flat stock is not stiff enough to pull against.
Bob