Landpride AT2572 Drive Pulley Removal

[JDEO]

I was out mowing yesterday and wouldn't you know it on the last strip the belt came off. No biggie I pulled the guards and there laying on the top of the deck was the drive pulley.

I was looking at replacement, the part is fairly cheap, but my question for you is should I pull the whole gear box or just attempt to remove the castle nut while mounted. I am concerned about messing up the seal on the gearbox while trying to get it off. I am hoping that, as there is a key retention, that the nut wasn't spun on by a gorilla.

Any tips or tricks to this?

Thanks in advance!

 

[NC419N]

It's much easier to do it with the gearbox off. It requires some patience maneuvering it back in to place but its the best way to do the job