Frustrated X Tradie

Hello, I use to be Tim the Toolman. Had forgotten about this post. Im  on again under a new name looking for a new solution.

I eventually fixed my transfer case leak.  I narrowed it down to weeping along the inside of the splined yoke and out a flaw in the yoke. 

Solution was to clean thoroughly and seal up the yoke expansion plug like end with a good quality  2 pack epoxy. $15 fix.  2.5 years later it's still perfect. I hope this helps someone.

Anyone done this successfully?

150 k on the clock and am attempting this . Made a neat tool up to remove the large white nut but the filter is spinning as well . Doesn't appear to be loosening at all.. help!!!