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Old 04-19-2006, 06:18 PM
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trans tailshaft bushing fit

I just replaced the tailshaft bushing and seal on my C-6 trans. But when I went to replace the driveshaft and insert the front yoke it would only slide on the spline until it reached the bushing and then would go further. I have never replaced a tailshaft bushing before so I don't know quite what to expect in terms of the fitment. I realize it should be snug, but can they actually require some "big hammer" action to slip into the bushing the first time or is this a sign that there is something amiss with the bushing. Theoretically, if I hammer on the yoke and it does not start sliding into place it could drive the bushing out of position (and into the housing area).

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Old 04-19-2006, 07:52 PM
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Quote:
Originally Posted by cboy
I just replaced the tailshaft bushing and seal on my C-6 trans. But when I went to replace the driveshaft and insert the front yoke it would only slide on the spline until it reached the bushing and then would go further. I have never replaced a tailshaft bushing before so I don't know quite what to expect in terms of the fitment. I realize it should be snug, but can they actually require some "big hammer" action to slip into the bushing the first time or is this a sign that there is something amiss with the bushing. Theoretically, if I hammer on the yoke and it does not start sliding into place it could drive the bushing out of position (and into the housing area).


you do not mention how you replaced the bushing.

Some times the edge of the bushing gets laid over a bit during the install. This will cause the drive shaft yoke to not slide in.

I'd work the yoke into the bushing and tap the yoke sideways to see if you can get the edge knocked down.
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Old 04-19-2006, 08:38 PM
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Yep, what he said! LOL
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Old 04-19-2006, 08:58 PM
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Originally Posted by Crosley
Some times the edge of the bushing gets laid over a bit during the install. This will cause the drive shaft yoke to not slide in.
The edge did get laid over a bit but I took the dremel with a small stone and ground off the edge that had been marred. I then ran the stone around the entire edge to give it a bit of an angle and then smoothed it off with 400 grit paper. After this I could run my finger around the edge and not feel any sort of lip or imperfection. I also oiled the inside of the bushing at that point (with the housing still off the trans) but did not try sliding the yoke into the bushing (should have done that I guess).

Since posting I did try tapping on the yoke a bit with a plastic hammer just to see if it would pop in - but didn't help.

I'm wondering if it would be better at this point to go ahead and use more hammer or whether I should try grinding a little taper at the end of the yoke to insure it gets a better start into the bushing. Suggestions?
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Old 04-20-2006, 06:06 AM
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My vote would be that you distorted the bushing enough that the yoke no longer slips into it.

Vince
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Old 04-20-2006, 07:47 AM
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Originally Posted by 302/Z28
My vote would be that you distorted the bushing enough that the yoke no longer slips into it.
If this is correct, is the only solution to start over with a new bushing? And if so, how do I prevent the exact same result? These things are such a tight fit that even after freezing the bushing (in the freezer for 1/2 hour before install) it still had to be driven into place with a good deal of force. So what's the trick to the install that prevents the use of force...and the resulting distortion?
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Old 04-20-2006, 08:59 PM
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Quote:
Originally Posted by cboy
If this is correct, is the only solution to start over with a new bushing? And if so, how do I prevent the exact same result? These things are such a tight fit that even after freezing the bushing (in the freezer for 1/2 hour before install) it still had to be driven into place with a good deal of force. So what's the trick to the install that prevents the use of force...and the resulting distortion?

did you have the proper bushing driver for this bushing?

Is it the correct bushing?

Even with the bushing driver , sometimes the edge flattens out a tad and needs correction.
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Old 04-20-2006, 09:38 PM
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Yes, you need the proper driver, one that is a perfect fit in the bushing. Even then sometime you mess it up.

Vince
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Old 04-20-2006, 10:31 PM
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Well, I finally got it installed. I ended up pulling the full driveshaft and then inserted an old yoke I had around. Without the full driveshaft attached I could easily tap the yoke pretty much dead center so I was fairly sure I was driving it straight. With a couple of taps it slid into the bushing, but it was a pretty tight fit. I then drove the yoke off and on a couple more times to loosen things up a bit and then installed the full driveshaft. It's still fairly snug but does spin and slide in and out with some effort. I'll drive it a couple laps and hopefully it will sort of break itself in (or break itself completely).
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