Many of us with D series tractors have lived with bad o-rings on the PTO Shifter shaft. The manual says to split the tractor so it's hardly worth the effort to replace it if the oil leak is minimal. Mine was pretty bad and since I'm restoring it right now, I didn't want to have any cases leaking on my new paint.
I made up a blog on how to refresh it without splitting the tractor, just so others in the future wouldn't have to do the footwork to find the tool and procedure when their's starts leaking.
I'm documenting it in a post so people searching can find the procedure.
http://www.yesterdaystractors.com/cgi-bin/projectblog.cgi?mode=detail&blogid=338
I made up a blog on how to refresh it without splitting the tractor, just so others in the future wouldn't have to do the footwork to find the tool and procedure when their's starts leaking.
I'm documenting it in a post so people searching can find the procedure.
http://www.yesterdaystractors.com/cgi-bin/projectblog.cgi?mode=detail&blogid=338