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

Rear Wheel BEaring Failure - Not even 300 miles covered!

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Old 09-29-2009, 08:43 AM
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tommychev
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Default Rear Wheel Bearing Failure - Not even 300 miles covered!

Hi,
I just replaced one of my rear wheel hub and bearing assemblies.
Ive done less than 300 miles with it, and it has gone bad already.

Its NOS delco item. What on earth would cause it to fail already?

I fitted it with extreme care, and tightenned the axle nut to 164lbs according to the service manual with a brand new torque wrench.


Last edited by tommychev; 09-29-2009 at 08:51 AM.
Old 09-29-2009, 10:23 AM
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tommychev
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I have just taken out the hub and bearing assembly out of the vehicle.
Bearing grease has been thrown out of the front lip seal of the hub assembly onto the emergency brake shoes. Why the hub assembly has spat grease out is beyond me. But i'd imagine that if grease has been spat out, then there's less grease for the bearing assembly where its needed for lubrication. Then bearing failure would occur. Thats great isn't it, after less than 300 miles. &^% GM and their designs, pack of useless u know whats. Or, ive struck it unlucky and copped a fault assembly
Old 09-29-2009, 11:12 AM
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VetteMed
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Originally Posted by tommychev
I have just taken out the hub and bearing assembly out of the vehicle.
Bearing grease has been thrown out of the front lip seal of the hub assembly onto the emergency brake shoes. Why the hub assembly has spat grease out is beyond me. But i'd imagine that if grease has been spat out, then there's less grease for the bearing assembly where its needed for lubrication. Then bearing failure would occur. Thats great isn't it, after less than 300 miles. &^% GM and their designs, pack of useless u know whats. Or, ive struck it unlucky and copped a fault assembly
Gotta love GM, eh? Just like my ACDelco Fuel pump (made in China), that died after 100 miles. So much for OEM quality. Whatever shred of loyalty I had, is gone.
Old 09-29-2009, 11:32 AM
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BrianCunningham
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sounds like the seal failed.
Old 09-29-2009, 11:53 AM
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0Paul Ruggeri
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, bad seal. They should warranty it. I've had pretty good luck with AC Delco bearings, but who knows where there coming from now.
Old 09-29-2009, 01:17 PM
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Van Steel
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We torque to 185 ft/lbs.
Old 09-29-2009, 01:35 PM
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M. Schumacher
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I'm inclined to turn a skeptical eye toward these claims of NOS OEM stuff, especially considering that there seems to be an endless supply. And if it is really NOS, how old is it and do you really want an old bearing? Grease has a shelf life and the oil eventually separates from the solids. Since the Corvette wheel bearing is a truly sealed unit, there's nothing that can be done about that. IMO it ain't worth it, I'll spend the money for new SKF.
Old 09-29-2009, 03:09 PM
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Wathen1955
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I was told that when ordering OEM parts, not to ask for white box parts since those are made in China. I did this when ordering break pads that were made in Canada.
Old 09-29-2009, 03:40 PM
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pologreen1
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ouch that is a nasty one to have to redo.
Old 09-29-2009, 03:44 PM
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pablocruise
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So I know what to watch out for, how did it sound/feel when it failed?
Did it lock up, break, or ???

thanx
Old 09-29-2009, 03:48 PM
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VetteMed
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Originally Posted by M. Schumacher
I'm inclined to turn a skeptical eye toward these claims of NOS OEM stuff, especially considering that there seems to be an endless supply. And if it is really NOS, how old is it and do you really want an old bearing? Grease has a shelf life and the oil eventually separates from the solids. Since the Corvette wheel bearing is a truly sealed unit, there's nothing that can be done about that. IMO it ain't worth it, I'll spend the money for new SKF.
Agreed. I think there's some funny business going on with all the claims of NOS parts floating around... especially since they are in nice new boxes, not what I'd expect for a part sitting on a shelf for 15-20 years.

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