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Old 01-07-2004, 04:46 PM
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tailshaft trans keeps leaking

Hello, I have just replace my tailshaft seal in the 700r4 trans in my 86 s-10, for the second time. what would cause the thing to keep leaking? Not sure if my unknown vibration would be causing that or not. I know driveshaft yoke doesnt seem to move toom much when I wiggle it up and down

Forgot to add that I used emry cloth to polish driveshaft yoke. I also put this seal in with an old bearing outer race

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Old 01-07-2004, 05:37 PM
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Re: tailshaft trans keeps leaking

Quote:
Originally posted by catscan4free
I know driveshaft yoke doesnt seem to move toom much when I wiggle it up and down
You have to have the rear wheels off the ground and tranny in neutral to check for slop.


I would say that you need to change the bushing in the tail housing.
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Old 01-07-2004, 05:41 PM
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I'm with Bestmech. This time replace the bushing and the seal. Then check the slop in the yoke. Should be tightened up. I would check it again in about 3 months to see if you treated the symptons instead of the cause.

Trees
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Old 01-07-2004, 05:55 PM
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I think many will take the bet that your vibration is what is taking out your seal.
U joints, driveshaft angles, physical damage on the driveshaft, I would even look to see the rear u-joint is properly seated in the middle of your pinion yoke.
If it's nothing obvious, that tranny will have to be looked at as a possible cause too?
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Old 01-08-2004, 05:20 AM
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As a general rule, you should always replace the tailshaft bushing when doing the seal. That has always eliminated leak problems for me.

Vince
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Old 01-08-2004, 09:23 AM
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Yep, I would say the bushing is worn out.

Troy

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Old 01-10-2004, 02:26 PM
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hello., how much play is acceptable in a yoke bushing?....if that would cause a vibration then tha twould explain why my friends s-10 still leaked cause he had a bad vibration too, but his got worse the faster he drove...2.5 1988 s-10 5 speed.
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Old 01-10-2004, 03:55 PM
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None

Troy
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Old 01-10-2004, 06:09 PM
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Come on Troy, you know the correct terminology would be "a split **** hair" at the most is acceptable.
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Old 01-10-2004, 11:35 PM
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Depends on what color it is.

Black would be to much.

Blond would be tight.

Red might do it, hummmmmm........=RCH

Rule of thumb, if it wiggles it's to loose;

Troy

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Old 01-10-2004, 11:46 PM
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A new technical abbreviation?

Yeah I like it!

Why bother using any kind of specs for comparison when you can just say RCH. That would explain red plasti-gage.......I don't even wanna think about the blue let alone how you would wind up with green.
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Old 01-11-2004, 07:41 AM
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Hello, Just more info here. I did try and move the trans shaft to see how much it would move up and down side to side, when the yoke was out. It moved about 1/2 an inch. How many bearings are in this tranny. Could I possably have more bearings/bushings that are out that would cause this seal/vibration to leak/vibrate?..
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Old 01-11-2004, 01:00 PM
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Crosley is the man you want to talk to now, as you are getting to the inside works of the auto trans, which is out of my knowledge base........HTH

Troy

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