Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Allis Chalmers Discussion Forum
:

AC -D12- Front oil seal engine

Welcome Guest, Log in or Register
Author 
redewX2

12-26-2005 16:26:49




Report to Moderator

1957 D-12 Ever since major overhaul including turned crank,( but I don't think they turned ends of crank just the throws.) I have a leak at front seal, anyone else expierence this problem ?
Do they make oversized seal or a sleave type wear ring for crank, Any knowledge on this matter
greatly appreaciated..




[Log in to Reply]   [No Email]
redewX2

12-27-2005 20:51:45




Report to Moderator
 Re: AC -D12- Front oil seal engine in reply to redewX2, 12-26-2005 16:26:49  
JSM/MN and Texas Denny....

Thank you for your time and advise, I removed old seal,and it appeared to be an faulty instillation, the seal appeared to have been folded over at the lip from the wear pattern, I may have jumped the gun at asking for help but I wanted to know in case I had to order a special seal or something and not tie up one bay of my garage for weeks with this job. Thanks so much...

redewX2

[Log in to Reply]  [No Email]
JMS/MN

12-27-2005 11:38:27




Report to Moderator
 Re: AC -D12- Front oil seal engine in reply to redewX2, 12-26-2005 16:26:49  
The front seal can be replaced without pulling the engine. Remove the radiator to gain good access to the area. Install the new seal in the front cover. Important thing is to center the seal/cover assembly on the crankshaft before tightening the bolts. Otherwise the seal is off-center in relation to the crankshaft, and it soon wears lop-sided and leaks. Some seals are neoprene, single lip, mfgr might provide the felt seal- depends who the dealer gets it from. NAPA will have the cheap single lip. Consider installing two seals- on a WD there is room for that- either way, press it in carefully and locate the cover before snugging up.

[Log in to Reply]  [No Email]
Texas Denny

12-26-2005 19:27:51




Report to Moderator
 Re: AC -D12- Front oil seal engine in reply to redewX2, 12-26-2005 16:26:49  
I wonder if the seal is installed correctly? I think it is far more likely that the seal is either installed in error of that the seal failed. Rarely is it necessary to turn this surface on the crankshaft (though the manual tells to check it for out of round. I'm not sure but most AC's allow replacement of this seal without pulling the pan or the engine. If you decide to replace, check the sealing surface on the timing gear cover. Clean throughly and install a new one. You may discover why it is leaking when you pull out the old one.

[Log in to Reply]  [No Email]
redewX2

12-26-2005 21:55:14




Report to Moderator
 Re: AC -D12- Front oil seal engine in reply to Texas Denny, 12-26-2005 19:27:51  
Texas Denny, Thanks, I had this engine rebuilt at a well know nationally advertised parts and machine shop supplier jobber, At the reinstall of engine I noticed the leak after adding oil but before startup I contacted the rebuilder and they offered to make right but that meant pulling engine and sending back This was last spring and I depend on this tractor to mow 9 acres sometime twice a week. The cost of hiring it done was killing me. So after dicussig it we decided that part of the seal being felt like material it just needed to soak up. WRONG !! I looked pretty good and its leaking between crank and seal, all I have is to pull seal , I"ve already taken off pulley ect, but from what I can tell unless seal is damaged, I"ll have to find oversized or a wear ring.

[Log in to Reply]  [No Email]
Texas Denny

12-27-2005 06:25:08




Report to Moderator
 Re: AC -D12- Front oil seal engine in reply to redewX2, 12-26-2005 21:55:14  
Well, "nationally advertised parts and machine shops" do make errors. I don't have a D-12 parts manual but I do have a D-14 manual. It doesn't say if it is a fiber seal or a rubber seal. A lot of them are rubber which would leak if it is damaged on assembly. If it is cork, you can build it up from the outside.

I remember a lot of rear seals must be cut to fit. If you cut it too long, it is so tight you can't turn over the engine. Cut it too short and it will leak. If it is fiber, they may have cut too short.

I have a Massey Harris 44 Special that had a bad rear seal. Massey Ferg no longer stocked parts. I bought a seal that matched the crank diameter from Garland seals and built a new plate adaptor to mount to block. It has never leaked a drop in 8 years. There are lots of ways to solve the problem.

Post the type of seal that you have. You may be able to buy a WD rear seal and cut it to fit.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


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. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 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