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Model C Front Crank Seal
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Les Kerf View Drop Down
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Joined: 08 May 2020
Location: Idaho
Points: 1056 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Topic: Model C Front Crank Seal
    Posted: 01 Feb 2025 at 5:15pm
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! Embarrassed

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 Tongue


Edited by Les Kerf - 01 Feb 2025 at 5:17pm
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Roger Mn View Drop Down
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Joined: 12 Sep 2009
Location: Preston Mn
Points: 106 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Roger Mn Quote  Post ReplyReply Direct Link To This Post Posted: 01 Feb 2025 at 5:21pm
try to get a speedy sleeve to go on your crankshaft   I did that years ago
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 85654 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 01 Feb 2025 at 5:57pm
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.
 




Edited by steve(ill) - 01 Feb 2025 at 6:12pm
Like them all, but love the "B"s.
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sparky View Drop Down
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Joined: 13 May 2011
Location: So. Indiana
Points: 1728 		Post Options Post Options   Thanks (0) Thanks(0)   Quote sparky Quote  Post ReplyReply Direct Link To This Post Posted: 01 Feb 2025 at 6:07pm
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!
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Les Kerf View Drop Down
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Joined: 08 May 2020
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Points: 1056 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2025 at 7:51am
Originally posted by Roger Mn Roger Mn wrote:

try to get a speedy sleeve to go on your crankshaft   I did that years ago

Thanks for the idea, I have never used those so need to look into it. Smile
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ekjdm14 View Drop Down
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Joined: 20 Aug 2024
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Points: 740 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ekjdm14 Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2025 at 9:54am
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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