Sounds like the same problem that I just had with my 48 A. It sounds as if your clutch is not fully disengauged. If its not, the fork will hit on the inside of the reduction gear cover and you'll never get it out. The fork slides into a groove of the operating sleeve. When you push the clutch lever, the fork pushes on the operating sleeve. The op Sleeve pushes on a dog assembly that then squeezes the belt pulley to the drive disk.
On my tractor you can look through the fill pipe in the reduction cover and see the fork going into the operating sleeve. If the operating sleeve is not against the belt pully's gear than you probably won't be able to get the fork/pillowblock out. You may be able to get the op sleeve close to the gear and get it out but, its a safe bet if the op sleeve is against the gear then it should come out with no problem.
My Belt pulley would not turn at all. The operating sleeve had become rusted fast to the dust sheild in the reduction cover. I ended removing the reduction cover with the belt pulley attached.(heavy, really heavy) I then had to heat on the inside edge of the dust shield to get the operating sleeve to move. as soon as I got it free the fork/pillow block came right out. BTW. You won't be getting this off with the wheel and tire on the tractor. I got lucky since my tire is flat. I just jacked up tractor and rotated the flat spot to the pulley and I had just enough room to get it off.
You will also have to disassemble the clutch assy and pull the drive disk to do the above if that is your problem.
The suggestion from johns48jdb to drill a hole in the reduction cover is a good one. They started doing this from the factory in later models. When I in bolted my reduction cover I probably got more than a quart of water out of it. I still don't know how it got in there. I will be doing this to mine before I put it back on the tractor.
If you have more questions just reply. It really sounds as if you have the same problem I had. You may want to get the free copy of the parts catalog that you can get from JDparts.com. Its really helpfull in seeing all the parts that make up the clutch assembly and belt pully assembly. Then you can print out the pages you need when you need them.
Good Luck
This post was edited by primerk5 at 06:42:14 11/03/09 2 times.
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