[michaeleodom]

Ford 3000. Looks like someone plugged a hole (see pic). Is this a bell housing drain that should be left open? Seems that someone may have thought it needed to be plugged.

I’ve read there is a drain hole with a cotter pin hanging to protect the clutch from any internal leak. Is that what I’m seeing plugged?

 

[SidecarFlip]

Maybe. Both my Kubota's have a solid hex plug that you have to remove to allow the bellhousings to drain of water and / or oil from a leaking trans or crank seal.

 

[Hacke]

I do not know what Kubota has to do with this, I think an answer regarding Ford 3000 is more adequate:
Yes, that is were the weep hole is.

I reuse my post from another thread:

FORD 3000

I HAVE A FORD 3000 AND WHEN I ATTEMT TO START IT FLUID IS COMING OUT WHERE THERE IS A BOLT IN THE TRANSFER CASE RIGHT ABOVE THE STARTER AND DON BELOW, AT THE INSPECTION COVER. ANYONE ELSE HAVE THIS ISSUE?? IDEAS?

www.tractorforum.com

Attached a picture, the weep hole is in the center of the red circle.
*** Edit
Inserted the forgotten picture...
***

 

[SidecarFlip]

Everything. Most all tractors, no matter what brand will have a weep hole or plug in the bell housing to evacuate fluid or water. My old Massey had one and so did my International. Some will have a floating pin, some will just have a threaded bolt. Had Kubota's with either. The Massey and the Barnyard Buick had hex head bolts. If they aren't there and you have a seal leaking, at some point it will compromise the clutch when it gets full enough.

If they don't have a plug, the lowest part of the bellhousing will have a relief in it to allow any contaminates to come out.