John Deere 60 water in transmission and rear PTO

Okay everyone, I recently bought a John Deere 60 at auction it needed some light work but nothing major, a big problem now however is that I found water in both the transmission and the rear PTO, the later wasn't a problem as the PTO housing was cracked (Possibly from freezing or a fool hitting a PTO shaft into it) but luckily a swift inspection showed nothing wrong as while some rusting did happen the oil left kept it from solidifying or spreading and the same being said of the transmission.

That being said I am wondering how the water got into the transmission to begin with? The only entry point I could think of would be the transmission shifter but the sheer volume of water that somehow got into the transmission even if it was sitting for three or so years makes it seem improbable and the only other option, I can think of would be it entering from the PTO housing but there are seals that should have prevented that even if it was cracked.

In any case, like I said none of this water seems to have done major damage but if I don't repair the leaks, it will just come back later so any advice on probable points of water entry would be appreciated.

There's always some way for a transmission case to breathe and even if never left to the weather some water will get it due to condensation.

Also drain the first reduction gear area.

Those shifters let in more than you think. They can be like a funnel. Sheds are a 2 cylinder's best friend.

Water into transmission: 1- Down gearshift lever, past the fulcrum ball and cover.. Also a bad fulcrum ball cover gasket.. 2- Can be bad gasket under the gearshift quadrant and could be a bad gasket under the transmission case cover.. Last place; could be a bad gasket at the top of the first reduction-gear cover.??? Then; if the seal is bad on the front side of the PTO shaft on the front side of the rocker-shaft housing; that could let the water from the transmission move into the PTO housing??

Those casings sweat a lot. I got one from a neighbor years ago. It had a good bit of water in it. I drained it, and refilled with new oil but it took about a year or so that I noticed a 'snap' in the
transmission while I was working. The tractor had been in his shed for about four years when I bought it from him. While it was sitting, the moisture lifted the oil from the bearings and pitted the races. I
had to replace the differential bearings because the differential was separating itself. Old mechanic at the dealer told me it was a common problem that could be solved by changing the oil more often or at
least cracking the drain plug once in a while.

On here only place I ever heard of sweating inside transnission and I have
had the Ford I have now for just a couple of months shy of 79 years and we
never had water problems in it. Every thing about has to be veted tho and my
guess is that it was in a flood at one time. Never found any water in the A or
B that I had for 40-50 years. May be other areas of country but did not find
that here in Ohio.