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Transmission leaking

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Old Feb 26, 2008 | 07:32 AM
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Transmission leaking

I have replaced the trans gasket already. I know its not leaking from the pan. Its coming from the rear of the trans around the mount. It only leaks when its hot after driving. Is there any other place that I should check?
Thanks

1974 4x4 351 c6
 
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Old Feb 26, 2008 | 09:21 AM
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A common site for leaks is where the speedo cable goes in the case.
 
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Old Feb 26, 2008 | 12:46 PM
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O ring at speedo cable, rear tailshaft seal (and maybe bushing), maybe gasket between tailshaft housing and trans housing.
 
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Old Feb 26, 2008 | 01:23 PM
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i was told that there should not be any fluid in the tailshaft. Is that true? My th350 in my car has a little but I have not checked the c6 yet.
 
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Old Feb 26, 2008 | 01:30 PM
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There is a seal there that stops fluid from coming out, but that seal can wear and leak into the tailhousing.
 
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Old Feb 26, 2008 | 01:36 PM
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Originally Posted by masterbeavis
There is a seal there that stops fluid from coming out, but that seal can wear and leak into the tailhousing.
So that means there should not be any fluid in the housing? if so then i need to remove the tailhousing and replace that seal...if i understand this right!?
 
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Old Feb 26, 2008 | 03:22 PM
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At the moment, I honestly cant remember.
 
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Old Feb 26, 2008 | 05:38 PM
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There should be a tail shaft bushing and it will need fluid to keep it lubricated otherwise there would be an internal seal.
 
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Old Feb 26, 2008 | 06:05 PM
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Originally Posted by OldMetal
There should be a tail shaft bushing and it will need fluid to keep it lubricated otherwise there would be an internal seal.
is that inside or on the outside of the housing??
 
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Old Feb 26, 2008 | 06:15 PM
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Originally Posted by f100_4me
is that inside or on the outside of the housing??
Sorry I wasn't very clear there, I'm no tranny expert but I have rebuilt quite a few and I have never seen one that didn't have fluid in the tail shaft, they need it.
What model tranny do you have? Is it four wheel drive?
 
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Old Feb 26, 2008 | 07:54 PM
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Originally Posted by OldMetal
Sorry I wasn't very clear there, I'm no tranny expert but I have rebuilt quite a few and I have never seen one that didn't have fluid in the tail shaft, they need it.
What model tranny do you have? Is it four wheel drive?
1979 f150 351 4x4 c6
 
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