HST leak on B1750

Hi, and welcome everyone at this forum!
I recently bought used B1750 (4wd bi turn) with 60" mower deck. Tractor has 1950hrs and by serial no 65416 assume manufactured in 1995?
I have noticed transmission oil leaking from area, where the front wheel drive shaft enters HST. I have reviewed the part list for this location but its seal location is not clear- if on the outside and could be replaced without separating the tractor? Picture is attached for reference. At a cover holding with 3 bolts and fluid seeps out where arrow is pointing at the joint of surfaces.


From other threads I understood that more typical leak location is drive shaft seal. Is this FWD shaft seal different?

Thanks for your input.

Hi,

Thanks for message. Looks like a bit more work in this project...
I suppose there will be a gasket between face of HST and gear box that also needs to be replaced? Anybody has an input what else should be replaced during this project.

Thanks .