My '72 M21 has developed a small leak coming from the idler shaft hole in the front of the main case. I had this trans apart a couple of years ago, and the shaft had nice tight "press" when reinstalled. Why would it leak now? Can I use silicone to stop the leak? Any ideas? Thanks, G.
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Re: M 21 leak---Help
If you are sure that is where it is coming from, about the only "fix" is a "bore and bush" available from a number of Trans shops.Bill Clupper #618 -
Re: M 21 leak---Help
Bill, thanks for your reply. I guess I was hoping to hear that I could knock the shaft back, clean the bore, add a layer of silicone, then reposition shaft. Has anyone tried this?Comment
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Re: M 21 leak---Help
George, I have had my T-10 rebuilt from my 62 and the reputable shop put a very small amount of silicone on the idler shaft bore at the front of the case. I have removed the trany several times recently for clutch problems and removed the old silicone and replaced with a small amount of Permatex blue. I haven't had any leaks, but make sure you don't put too much on this area because it needs to fit flush with the face of the bellhousing.Comment
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Re: C1 related trans question
I have a 61 FI with the original BW T10 and it needs a rebuild. Is there a good source for a rebuild Kit for these transmissions? JerryComment
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Re: C1 related trans question
Jerry...
Darrell shepard at 4 Speeds knows his business and has excellent quality parts.Comment
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Re: M 21 leak---Help
Ron, I'm glad that just silicon worked for you, it rarely does. Personally I can't belive they all don't leak to some extent from there. I think all mine always have. For some people pulling a trans out and sending the case away for rebush is a pretty big deal, plus my opinion is that it is not a good design anyway. I have heard of some rebuilders cutting an O ring groove in that area. So I developed what I'm sure many call a bubba fix. I use it all my installations now as a rule and have for many years and it does work well. My current '65 needs this. I simply cut out a gasket in the shape of the front of the trans in including ears and all. Install it between the the trans and the bell housing. You will see that the surface of the bellhousing is blank against the trans counter shaft hole. A perfect sealing surface for the gasket. Use a small 'dollop' of Permatex black silicone at the pin area for good measure.
You must use a full gasket to maintain trans alignment.
Those that I have passed this "repair" onto also use it with great success.Comment
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Re: M 21 leak---Help
P.S.
I should mention that I have also seen some folks on other boards who I have suggested this to pass it on as a fix.Comment
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Re: M 21 leak---Help
Thanks to all. Frank, your idea sounds like the way to go, as the leak is very slow. Thanks again, G.Comment
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Re: M 21 leak---Help
George, why don't you post your results when you get'r all fixed up?Comment
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Re: M 21 leak---Help
Frank, I'll do that. I'm thinking that the worst case senerio would be a continued slow leak that the gasket material would absorb until total saturation occured. So it might be some time till any leak evidence shows up. G.Comment
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Re: M 21 leak---Help
Won't happen. I've had gaskets in place for years.Comment
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