Here's how I do it Ken. Stole the Idea from the Lecy garage. To pull it off, you need a chunk of thick plate with a hole in it so the shaft fits thru the hole. Then, I made the tool for the puller to push on That will fit thru the bore of the worm, and It needs a slot cut, ground, milled, what ever to clear the key on the worm. I painted the key yellow in the pic. Then, to pull it back on simply line up the key, then clamp on the aluminum block , and clamp the big puller on the block and pull it on. Easy-peasy. I made the aluminum block, about 2" thick, and drill the hole one size smaller than the shaft, then cut it in half. There are very slight splines on the shaft to line up also. Thats an NOS shaft in the photo. I have an old worm gear here that I have seen every day for a couple years, and now I can't find it ! But, you can see the operation with out it. Perhaps in my obituary it will mention stepping on a worm gear and falling to my death? Also, I have a big press, but the shafts are too long, and this works great, I've done several.
Well shoot, The new pics disappeared, but I found these old pics on file. No yellow key way, but you'll figger it out
