Thought I'd share my stuck wheel story...
I have a 185 that that I couldn't get the wheel off of. I had tried hitting the wheel from behind with a large hammer onto a block of wood. That didn't work, so I had the entire rear end out and had the wheel sitting on 2 pieces of heavy steel with the entire transaxle hanging down. I sprayed penetrant (PB Blaster and Zepreserve) for 2 days and also used oxy-acetylene torch to heat up the collar. Tried to hit on the end of the axleshaft with a brass drift and then a large punch while the wheel was stationary. All it did was mushroom the end of the axleshaft and somehow the extreme shock of an 8 lb hammer broke the hydrostat output gear in half, which cost $70 to replace. I dressed up the end of the axle with a die grinder and then proceeded to phase two.
I made a puller. I took a 1/2" thick plate, drilled a 3/4" hole in the center, welded a 3/4-16 nut over the hole, and drilled two 1/2" holes on the plate and in the wheel. I bolted the puller to the wheel using two 1/2" bolts and used a long 3/4-16 bolt to press on the end of the axleshaft. I used a 1/2" impact to tighten the 3/4" bolt and it ended up breaking the wheel where the rim is welded to the collar. Now I had a broken wheel, so I proceeded to phase 3.
I located two used wheels/tires for my 185 on ebay for a good deal. (John Deere wants $90 for just a wheel, and I got both used wheels/tires for $65 shipped to the door.) Then I took my good 'ole Smith oxy-acetylene torch, cut the rim portion off the collar, then turned down the torch and "washed" the collar off the axleshaft. Then I cleaned up the axleshaft with emery cloth and mounted my new to me wheel/tire, using a boatload of antiseize. This was to replace a leaking axle seal and also to facilitate any potential future repairs that may require splitting the case halves of the differential. If the other axle seal decides to start leaking, and I can't get the wheel to come off fairly easily, out the torch will come. I won't risk damage to the axleshaft or internal components again.
Will