transmission oil is filling engine oil pan . engine rear seal was replaced hyd pump rebuilt 3 times still have issue
Not sure about the 720, but my 730 wouldn't drain the oil out of the clutch housing back into the transmission fast enough and it would spray out the vent on the back of the cab. Maybe your vent is plugged and it takes out your crank seal instead
vent is clear
There are a few guys on here that have a lot of knowledge about Champion, you might just have to wait for them to see your post
I would remove pump from mount on engine and put air pressure in the pump housing via the output port. See if any oil comes out of the shaft seal. Rebuilt pumps don’t always work out.
Whose been rebuilding the pump?
What kind of pump