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

Slack in rear diff

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Old Sep 20, 2015 | 03:40 AM
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Default Slack in rear diff

Hi Guys

I was changing my rear wheel bearings, because the car had a whining sound when driving a speed. When turning sharp left it dissapered so i assumed it was the left rear wheel bearing.

It seems like that also has seen better days.

When i was in there i decided to check the u-joints. Intially because i tought that there was som play in them. I was able to rock the driveshaft back and forth in the rotation direction. I was able to move it 1-2 mm back and forth. So my question, is this normal? If not, what could it be?

Kind regards
Dennis
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Old Sep 20, 2015 | 05:22 AM
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Originally Posted by dalla
Hi Guys

I was changing my rear wheel bearings, because the car had a whining sound when driving a speed. When turning sharp left it dissapered so i assumed it was the left rear wheel bearing.

It seems like that also has seen better days.

When i was in there i decided to check the u-joints. Intially because i tought that there was som play in them. I was able to rock the driveshaft back and forth in the rotation direction. I was able to move it 1-2 mm back and forth. So my question, is this normal? If not, what could it be?

Kind regards
Dennis
You observed this at the pinion so miles may very well be relevant when evaluating.

You might hold the pinion firm and do the same back & forth with the tire/wheel and observe/listen at the differential.

Did the bearings correct the "whine"?

Last edited by WVZR-1; Sep 20, 2015 at 05:41 AM.
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Old Sep 20, 2015 | 06:31 AM
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Sorry. The car has do 30.000 miles. I have not driven it yet with the new bearings. It is still not put together.
I experienced this when holding the drive shaft, then i am able to rock i sligthly back and forth in the rotation direction.

Car is a 1994 six speed.
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Old Sep 20, 2015 | 11:30 AM
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Some play I believe is normal, put the wheel on then rock it back n forth and it'll seem worse LOL. I mean the gear set isn't press fit so there has to be some play back n forth.
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Old Sep 20, 2015 | 12:09 PM
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Originally Posted by BOOT77
Some play I believe is normal, put the wheel on then rock it back n forth and it'll seem worse LOL. I mean the gear set isn't press fit so there has to be some play back n forth.
That sounds good. I wasn't sure about it. But as I said, it was very little.
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