Model C Front Crank Seal
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=205223
Printed Date: 27 Jul 2025 at 4:29pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Model C Front Crank Seal
Posted By: Les Kerf
Subject: Model C Front Crank Seal
Date Posted: 01 Feb 2025 at 5:15pm
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Well, it looks as though I have out-smarted myself yet again (not difficult to do but still annoying). Working on this combine engine and have it on the engine stand, it now turns over smoothly so I says to myself, "Self, you really aught'a replace that there front crankshaft seal whilst it is just sitting there staring back at you". So I outst with my trusty puller and got that crank pulley out of the way and then carefully pried the old seal out. The old seal is a cork gadget about 3/16" thick and the crankshaft has an 'oil thread' machined in it to 'screw' the oil back into the crankcase. The new seal in my gasket kit is a modern rubber lip type that is incompatible with the oil thread. It just ain't gonna work like that. Hmmmph!  Are the old style cork seals still available? P.S. I am NOT pulling this crank just to have it machined for a modern seal
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Replies:
Posted By: Roger Mn
Date Posted: 01 Feb 2025 at 5:21pm
| try to get a speedy sleeve to go on your crankshaft I did that years ago |
Posted By: steve(ill)
Date Posted: 01 Feb 2025 at 5:57pm
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I have cleaned the GROOVE and put steel epoxy in it and sanded it smooth.. One has been that way for 15 years... The SPEEDY SLEEVE is a thin stainless tube a few thousandths thick that you press over the crank journal.. That is a great idea... just got to get the right size.. this shows what it looks like and that there are various sizes... I DID NOT PICK THE SIZE.. you will need to GOOGLE after knowing the DIA.
 ------------- Like them all, but love the "B"s. |
Posted By: sparky
Date Posted: 01 Feb 2025 at 6:07pm
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Speedy sleeve worked great for me on my 45 front crank seal and also on my CA pro shaft. Good luck. ------------- It's the color tractor my grandpa had! |
Posted By: Les Kerf
Date Posted: 02 Feb 2025 at 7:51am
Thanks for the idea, I have never used those so need to look into it.
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Roger Mn wrote:Posted By: ekjdm14
Date Posted: 02 Feb 2025 at 9:54am
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Never had cause to use them myself, but have heard of them & one ought to be a great solution for converting your crank to a lip seal. The usual application I've seen them used in was on heavy equipment shafts (I believe some heavy truck engines even may have been fitted with them from new) so that the wear surface for the seal could be replaced without having to strip the whole machine. A fantastic idea & I hope the guy who came up with them got a good pay check from them.
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