Pulled the NV3500 out of the truck Broke it down & replaced the rear shaft output bushing & seal. took it for a test drive this morning and I think it's still slinging fluid. Now I suspect that there's a weep hole in the yolk on the Drive shaft. I don't see how else it could be leaking. It actually looks clean around the seal But there's fluid on the underside of the truck right above the front U-joint. Syncromesh stinks when it hits the CAT & burns.
[Linked Image from live.staticflickr.com] [Linked Image from live.staticflickr.com]
[Linked Image from live.staticflickr.com]

I know a lot about a lot of things BUT I still have a lot to learn.
Life is what you make of it. So, why not make a working machine to make it easier.