Need help for oil leak front case bevel gear Kubota

[Mario2]

Hello
I am new on this forum
I have a Kubota L1802DT (gray market) and there is an oil leak between a bevel case gear and front axle.(see picture).
I think that there are several common points with L235DT.
I planned to replace to collar oil seal and two seal oil.
I drained away the oil (front axle differential case and front axle gear case).
I detached case axle.
At present, case axle is to separate without forcing and the shaft bevel gear remained in case bevel gear.

I think that it is necessary removed the shaft bevel gear To inspect the other parts but I do not want cause the others problems.

I don't know how to remove that old oil seal and removed the shaft bevel gear.(SEE PICTURE)

If you have the advices for me, I would appreciate.

Regards, Mario

 

[art]

Most of those cases are filled with the same oil that is in the differential. They also will take 85-90 gear oil and the first thing that I do is switch to that when they are leaking.