1026r 4WD Shaft Leaking after wrapping grass around it

Well, I was cutting brush and I needed to use the 4wd to make it through some of the terrain. A while later, the tractor wouldn't move anymore. I looked underneath and all the tall grass had wrapped itself all around the entire 4wd shaft front to rear.

It took me 30 minutes to get it all out. It looks like some fine grass got wound into where the 4wd shaft goes into the tranny and know that seal is leaking just a bit. (a few drips here and there)

Anyone know what is entailed in replacing the 4wd shaft seal on the tranny side?

Luckily, everything else is working just fine and the grass didn't appear to harm anything else.

Thanks,

Matt