Having trouble with John Deer CT322 Skid Drive Sprocket removal

I am having a heck of a time getting my Jonh Deer Track Loader (CT322) drive sprocket to loosen up to take off, tried to loosen with bottle jacks and seal began to start to leak, I have the track off already, going to replace both tracks, so I am going to switch the sprockets from one side to the other,Any one have any suggestions,

Thanks

Having trouble with John Deer CT322 Skid Drive Sprocket removal