Hole in transmission case?

[Dunnett]

OK - I'll probably feel like an idiot after this questions is answered but....

Upon inspecting the underside of my 2N/9N's transmission I discovered 2 holes that had cotter pins placed in them.

I'm at a loss on this...

 

[Dunnett]

2nd hole...

 

[Bob]

They are for hanging Christmas decorations.

Somebody goofed on your tractor, though, as they got put in bass-ackwards!

Tough to hang anything from them that way!

 

[old]

Would you believe they where put there when the tractor was built?? They are there to keep the drain holes which is what there in from clogging up with dirt and oil. What they do is drain the bell houseing area because of any leaks in the crank shaft seal and or tranny seal.
Hobby farm

 

[JimSC]

They keep the transmission from rolling around the engine when you put it in gear, sorta' like cotter pins used to prevent critical nuts from backing off studs....or maybe not...

 

[GB in MT.]

I think those thingies are pre-installed to divert oil from the inner transmission to a spot more apt to fall directly onto your eyelids while you are taking the dredded afternoon nap!!

Gary :shock:

 

[Dan]

Sorry for the slight "ribbing" at your expense - this is a very typical newbie question we regulars see posted quite often, so we entartain ourselves with replies like you got. No insult intended at your very valid question.

To expand on Old's reply, there are two holes - one by your tranny drain plug, and one up closer to the engine under the clutch area. The reason for two is you have two main areas that can leak oil into your bell housing area - your transmission input shaft oil seal that seals off your 90w trnasmission/hydraulic/differential oil, and the rear main crank shaft seals on your engine holding back your engine oil. You do not want oil accumulating in your empty bell housing and getting on the flywheel - or your clutch would not work very well and require a lengthy tractor split to fix.

These holes give you a visual on when these seals may need to be replaced, let you know WHICH seal is leaking by which hole is dripping, and give the oil a place to drain. The cotter pins are there to dangle and keep the holes clear of mud and stuff that would keep the oil from draining. Crude - but very effective.

Hope this helps,
Dan

 

[ericlb]

hey! theres a drain plug that isnt rounded off by somebody handy with a crecent wrench or vise gripps, now thats a rare find!

 

[Dunnett]

Maybe you're supposed to hang the tractor from the tree.

 

[gahorN]

Don't think I've ever seen two cotter pins more badly mis-matched than those two. That's so ugly, I'd recommend you sell that mis-matched tractor to the first guy who offers cash.
I'll give you $200. Where do I pick it up? :lol:

 

[Bob]

.

 

[Bob Harvey]

AND... the real answer is ......Tah Da ! They are 'cotter' pins to keep the drain holes open. 'Ole' Henry's engineers where clever...if your engine or transmission leaked a little oil (oddly enough they did , due to no tech seals), then the drain holes could be kept open due to the 'pins' shaking around under normal use. (You guys should stay off the cocktails after church)

 

[Dunnett]

No offense - and as I mentioned I was prepared for the onslaught!



I assumed by the way the pins were installed that it was either a factory install or someone had taken the time to install a homemade fix.

Now, when one of YOU tractor guys has a newbie drum question...

 

[Dunnett]

Merry Christmas Bob!