(800) 853-2651
SHOP NOW

Transmission leak through fender bolt

R

RTR

Well-known Member
Working on a 1975 Farmall 140 right now and upon removing the fender on the carburetor side, I pulled the 2nd bolt and a solid, steady stream of gear oil from the transmission started pouring out through that hole. Do those holes that hold fenders on go all the way through the transmission case? I've removed several over the years to clean and paint and have never had that happen. Granted if they do go all the way through that means that the transmission is over full because the other ones never have leaked after I had changed the oil. 4 1/2 quarts is all I ever put on them. 5 quarts with right angle PTO.

Just wanted to confirm nothing major is wrong with this one since it started leaking. I immediately put the bolt back in and will wait until tomorrow to investigate and I'll also go ahead and change this ones Oil too.
22212.jpg
22213.jpg
22214.jpg
 
The casting likely isn't very thick at that point because it's the side of the transmission case.

So the threaded hole may not be "blind".


Just for giggles, why not take the bolt out at the same location in the other fender, and see what you find?
 
(quoted from post at 23:27:21 08/26/18) The casting likely isn't very thick at that point because it's the side of the transmission case.

So the threaded hole may not be "blind".


Just for giggles, why not take the bolt out at the same location in the other fender, and see what you find?
Click to expand...

Bob it is an offset tractor so the fender bolt over there is not in transmission case. Maybe the platform bolt is. I drained oil out of tranny and there was almost 3 gallons or so. Way too much.
22234.jpg
 

I haven't found out why. But yes possibly it goes all the way through and the overfill might have caused that. No water was in there other than the amount mixed in with the oil to turn it a milky color.
 
Yes this hole only goes all the way through. Not sure why guess it was ddfect at factory. I will put permatex on bolt when I reassemble.

On a second note...you never know what you'll find between the fender and transmission of a tractor like this. Haha. .
22236.jpg
 
There is supposed to be a felt pad between the fender and the transmission. Not good if it holds water but I suppose that dirt(dust) jammed in there would not be any better.
 
(quoted from post at 02:33:06 08/27/18) There is supposed to be a felt pad between the fender and the transmission. Not good if it holds water but I suppose that dirt(dust) jammed in there would not be any better.
Click to expand...

Yes that pad was still there but of course no worth reusing. You can see it on the left side of the fender. It is made from jute material.
 
(quoted from post at 17:16:50 08/26/18)
I haven't found out why. But yes possibly it goes all the way through and the overfill might have caused that. No water was in there other than the amount mixed in with the oil to turn it a milky color.
Click to expand...

Hopefully that one bolt was not too long for the hole and popped the casting.
 
(quoted from post at 07:33:21 08/27/18)
(quoted from post at 17:16:50 08/26/18)
I haven't found out why. But yes possibly it goes all the way through and the overfill might have caused that. No water was in there other than the amount mixed in with the oil to turn it a milky color.
Click to expand...

Hopefully that one bolt was not too long for the hole and popped the casting.
Click to expand...

They were all same length and original bolts. About 3/2 inch to 1 inch long. You can see them in the picture.
22244.jpg
 
Pull it apart and look on the inside where that bolt is. Could be broken out from someone putting a too-long bolt in there. Could be an air pocket in the casting. Could be that way by design.

If you've got others, pull that bolt and poke in with a wire. If it's open, it's by design. Otherwise it's damage or a flaw.

At this point it is really neither here nor there. Time has proven that it is not detrimental to the operation of the tractor, AND your tractor has excellent axle seals. Clean it up, put it back together, and run it.
 
(quoted from post at 18:21:09 08/27/18) Pull it apart and look on the inside where that bolt is. Could be broken out from someone putting a too-long bolt in there. Could be an air pocket in the casting. Could be that way by design.

If you've got others, pull that bolt and poke in with a wire. If it's open, it's by design. Otherwise it's damage or a flaw.

At this point it is really neither here nor there. Time has proven that it is not detrimental to the operation of the tractor, AND your tractor has excellent axle seals. Clean it up, put it back together, and run it.
Click to expand...

I'm gonna seal that bolt and run it. Just trying to figure out why it was that way. I'll check others in the future. With a screwdriver it felt like a flaw/air bubble in the casting. The hole felt like it was at the upper side of the drilled hole.
 
Most likely in my view, someone had it apart in the past and put too long a bolt back and popped the inside of the hole out when they tightened
the bolt. Easy to do.
 
(quoted from post at 23:21:23 08/27/18) Most likely in my view, someone had it apart in the past and put too long a bolt back and popped the inside of the hole out when they tightened
the bolt. Easy to do.
Click to expand...

All bolts were original and same length. No worries though. Thank you all.
22279.jpg
 
You must log in or register to reply here.

Similar threads

C
Wire for Super C lights
Replies
2
Views
178
Fritz Maurer
F
S
Rear Engine Oil Leak on Gas IH 674 (C-200 Engine)
Replies
17
Views
560
Ozlander
O
M
To flush or not to flush
Replies
12
Views
994
Ellis Kinney
Ellis Kinney
P
Farmall 340 transmission
Replies
4
Views
400
Pete7
P
K
1943 Farmall H transmission project and mouse problem
Replies
5
Views
368
BarnyardEngineering
BarnyardEngineering
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top