C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Non stop transmission leak?

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Old Nov 19, 2003 | 07:57 AM
  #1  
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Default Non stop transmission leak?

I recently had my trans rebuilt. The tech that rebuilt my trans has done many for me and does a quality job... no shortcuts, no aftermarket parts. I got my trans back and the rear seal was leaking. Okay, no big deal, I had to replace the pinion seal anyway so I replace it with another GM tailshaft seal. I come into work this morning and it's STILL leaking. WTF?

I checked to make sure there were no burrs or irregular surfaces on the housing. There were none.

Any suggestions?

Mark
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Old Nov 19, 2003 | 08:07 AM
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Default Re: Non stop transmission leak? (C4 Newbie)

Make him do it again.
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Old Nov 19, 2003 | 09:25 AM
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Default Re: Non stop transmission leak? (vader86)

The problem is he only rebuilt the trans that I took to him. I've already gone through the PITA of dropping the exhaust, torque bar and driveshaft. I hate to do it again. Though it may be his mistake (don't know that for sure) I'm not pulling the trans to take to him.

Guess I'll pull everything again and see if I missed something.

Mark
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Old Nov 19, 2003 | 09:29 AM
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Default Re: Non stop transmission leak? (C4 Newbie)

Have you checked the drive shaft yoke? if it has a bur or is scared it will tear up the rear seal.
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Old Nov 19, 2003 | 10:09 AM
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Default Re: Non stop transmission leak? (C4 Newbie)

Put a new bushing in the tail housing and use emery cloth to smooth out your sliding yoke. Even with a groove that I could feel with my fingernail after the emery cloth, mine's still leak free with the new bushing and seal.
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Old Nov 19, 2003 | 12:57 PM
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Default Re: Non stop transmission leak? (C4 Newbie)

Can you see exactly where the fluid is coming out? In addition to all the above, good suggestions, check the freeze plug in the end of the slip yoke. This can be the culprit. Good luck, and...

RACE ON!!!
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Old Nov 19, 2003 | 04:25 PM
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Default Re: Non stop transmission leak? (CFI-EFI)

[QUOTE]In addition to all the above, good suggestions, check the freeze plug in the end of the slip yoke. This can be the culprit. [QUOTE]

:iagree: I have an aggrivating small leak that my mechanic has pinpointed to the plug in the yoke. It's actually comforting to hear from others that this is indeed a possibility.

How do you repair/replace this plug? The yoke is not available as a seperate piece, but comes with the driveshaft assy. I'm looking or a cheaper fix than replacing all these parts.
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Old Nov 19, 2003 | 09:14 PM
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Default Re: Non stop transmission leak? (sraft)

How do you repair/replace this plug? The yoke is not available as a seperate piece, but comes with the driveshaft assy. I'm looking or a cheaper fix than replacing all these parts.
In the GM parts book, it is not offered as a separate item. BUT, you are dealing with a Spicer (Dana) driveline. Find a Spicer distributor (as I have suggested for diff parts) and see what you can get there. A hundred years ago, when I worked for A Spicer WD, we always kept them in stock. Any driveline shop should be able to order it. Once you get it apart, you may be able to simply find a plug to install, or goop it up with RTV. This one isn't rocket science. Good luck, and...

RACE ON!!!
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Old Nov 19, 2003 | 09:32 PM
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Default Re: Non stop transmission leak? (C4 Newbie)

Is the driveshaft out of balance? It's impossible for that seal to work if there's movement. Any burrs on the yoke would do the same.
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