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Wheel Bearings Going Bad Just Sitting There? #4726033
04/13/18 05:14 PM
04/13/18 05:14 PM
Joined: Jun 2013
Posts: 329
sw ohio
willbur Offline OP
willbur  Offline OP
Joined: Jun 2013
Posts: 329
sw ohio
Greetings-
Had to replace a rear wheel bearing on my favorite garage queen with 20K miles (driven maybe 3k a year). Mechanic said it went bad because car was used infrequently- use it lose it. I think it was a manufacturing defect. One YouTube site actually showed how little grease was in these bearings.

Mechanic's diagnosis make sense? Opinions/thoughts welcome

Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726040
04/13/18 05:30 PM
04/13/18 05:30 PM
Joined: Sep 2015
Posts: 6,118
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,118
Kalifornia Kollective
OK, so the rear end oil level is often below the bearing when sitting level. They get occasionally oiled when you turn or side hill, park on off camber, etc. Ball and roller bearings do not need a lot of oil. But they need a good residual film.

So I have to ask, did you use synthetic gear lube?

The reason I ask, is because many synthetics have a lower surface tension than dino oils. That is one reason they can go lower viscosity when cold like 5W w/o needing a ton of VII's. But, the downside to these lubes is they also have less ability to maintain capillary fill. They drain off quicker. There is a some residual film of course, but it may be thinner ...

Dino oils usually have a mix of constituents and these tend to up the surface tension and do a better job at capillary fill. So I usually use high quality dino oils for stuff that sits around a lot. Of course if it's wet because it's under the full line, there is no need. But for components that have "splash" lubrication, I think dino's are better for the long sitters smile

Last edited by BrocLuno; 04/13/18 05:31 PM.

Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726045
04/13/18 05:33 PM
04/13/18 05:33 PM
Joined: Aug 2008
Posts: 3,260
Where the wind comes sweepin'
Reddy45 Offline
Reddy45  Offline
Joined: Aug 2008
Posts: 3,260
Where the wind comes sweepin'
How exactly did the bearing fail? Rust or lack of lubrication?

Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726047
04/13/18 05:34 PM
04/13/18 05:34 PM
Joined: Jul 2013
Posts: 1,839
Ottumwa, Iowa
jhellwig Offline
jhellwig  Offline
Joined: Jul 2013
Posts: 1,839
Ottumwa, Iowa
This is an issue in the industrial world but not in a car parked in a garage world.


Sparks fly from my fingers.

1995 Chevy K2500 Suburban lt 5.7
2014 Toyota Sienna
1983 Chevy K5 350
Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726052
04/13/18 05:35 PM
04/13/18 05:35 PM
Joined: Aug 2010
Posts: 1,193
pa
benjy Offline
benjy  Offline
Joined: Aug 2010
Posts: 1,193
pa
if its a GM product later model wheel bearing failures are often + common at low miles!! owners report replacements are just as bad + only last until warranty is gone!!

Re: Wheel Bearings Going Bad Just Sitting There? [Re: BrocLuno] #4726062
04/13/18 05:52 PM
04/13/18 05:52 PM
Joined: Jun 2013
Posts: 329
sw ohio
willbur Offline OP
willbur  Offline OP
Joined: Jun 2013
Posts: 329
sw ohio
Thank you Bronc-
I think we are talking about two different things. These bearings are sealed greased for life rear hub bearings. No oil or gear lube ever comes in contact. No oil to check...

Re: Wheel Bearings Going Bad Just Sitting There? [Re: Reddy45] #4726064
04/13/18 05:54 PM
04/13/18 05:54 PM
Joined: Jun 2013
Posts: 329
sw ohio
willbur Offline OP
willbur  Offline OP
Joined: Jun 2013
Posts: 329
sw ohio
Don't know. It's sealed. Just felt very rough and noisy when I spun it in my hand.

Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726127
04/13/18 06:32 PM
04/13/18 06:32 PM
Joined: Jul 2003
Posts: 4,960
New Zealand
Silk Offline
Silk  Offline
Joined: Jul 2003
Posts: 4,960
New Zealand
I get it every spring with boat trailer bearings. The customers moan that the bearings were replaced last year, there shouldn't be a problem. Yeah, but it's been sitting doing nothing for 6 months since you last put the boat in the water...rusting away...


1987 BMW R65 - Aegis SAE30
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726132
04/13/18 06:36 PM
04/13/18 06:36 PM
Joined: Dec 2013
Posts: 2,580
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline
Joined: Dec 2013
Posts: 2,580
Fort Worth, Texas
Make & Model??


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: Wheel Bearings Going Bad Just Sitting There? [Re: clinebarger] #4726150
04/13/18 06:49 PM
04/13/18 06:49 PM
Joined: Jun 2013
Posts: 329
sw ohio
willbur Offline OP
willbur  Offline OP
Joined: Jun 2013
Posts: 329
sw ohio
Originally Posted By: clinebarger
Make & Model??


Porsche 911

Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726208
04/13/18 07:33 PM
04/13/18 07:33 PM
Joined: Oct 2012
Posts: 4,825
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,825
Taiwan
Originally Posted By: willbur
Originally Posted By: clinebarger
Make & Model??


Porsche 911


Hmm...not much GM-knocking mileage there then.

If I lived a bit closer, I'd offer to exercise it for you occaisionally.

Last edited by Ducked; 04/13/18 07:35 PM.
Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726268
04/13/18 08:29 PM
04/13/18 08:29 PM
Joined: Jun 2002
Posts: 12,716
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,716
The Motor City
Are you telling me it's a sealed bearing, and the mechanic made the diagnosis without taking the bearing apart?

Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726316
04/13/18 09:33 PM
04/13/18 09:33 PM
Joined: Mar 2016
Posts: 1,750
Western S.C.
CR94 Offline
CR94  Offline
Joined: Mar 2016
Posts: 1,750
Western S.C.
Rust never sleeps.


2011 Toyota Prius now at 95K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
Re: Wheel Bearings Going Bad Just Sitting There? [Re: willbur] #4726338
04/13/18 10:18 PM
04/13/18 10:18 PM
Joined: Aug 2017
Posts: 235
Cincinnati, USA
Dave9 Offline
Dave9  Offline
Joined: Aug 2017
Posts: 235
Cincinnati, USA
It makes no sense at all with a vehicle driven 3K a year. The five possibilities I can think of at the moment are:

Junk Chinese bearing
Improper installation
Incorrect fastener torque
Brake dragging, excessive heat (but then brake problem is evident)
Wheel alignment off (but then tire wear problem is evident)


Get a different mechanic, he doesn't know squat if he thinks a sealed bearing driven 3K in a year needs driven more. If anything it would have worn out faster had it been driven more.

Re: Wheel Bearings Going Bad Just Sitting There? [Re: Ducked] #4726339
04/13/18 10:19 PM
04/13/18 10:19 PM
Joined: Nov 2008
Posts: 9,394
Phoenix
dishdude Online content
dishdude  Online Content
Joined: Nov 2008
Posts: 9,394
Phoenix
Originally Posted By: Ducked
Originally Posted By: willbur
Originally Posted By: clinebarger
Make & Model??


Porsche 911


Hmm...not much GM-knocking mileage there then.

If I lived a bit closer, I'd offer to exercise it for you occaisionally.


It's still GM's fault. Somehow. Everything is. ???


2018 Challenger SRT 392 PUP 0w-40 Wix 57899XP
2018 GTI
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