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Rear Bearings Failure, why ? |
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Tjensen |
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Joined: Jul 17 2012
Member No: #954
Location: Bergen |
I had to change right rear bearing after 65000 km. Now, on 77 000, both rear bearings have to be changed. What is the problem ? Car is mostly used on long tours and is parked in a garage. Unused for 2 months each year. Model: 2010 | ||
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cruiserphil |
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Member No: #38
Location: Celbridge |
Tjensen, Standing unused for two months each year may be a contributory factor. Best regards, Phil C. |
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arconell3 |
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Joined: Jun 28 2012
Member No: #922
Location: Kalkar |
I would suggest you have both the ride height and the alignment checked. Remember to check and correct the ride height first, an incorrect ride height will cause the alignment to be off. Correcting the alignment before the ride height will cause the geometry to be off again. And while they are at it, have them check all suspension bushes. Robert |
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e3steve |
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Joined: Jan 21 2013
Member No: #1163
Location: Warsash, Hants & Palma de Mallorca, Spain |
Rear bearing noise was the second task I had to undertake, two years ago, when I first bought "c6steve". the first, of course(!), was the thermostat tank/coolant outlet tank... Mileage then was about 90K (144,000kms). |
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gmerry |
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Joined: Dec 11 2009
Member No: #21
Location: Scotland |
Hi Tjensen, did you do a dissection of the failed bearing: normally low mileage wheel bearings fail due to seal failure followed by loss of grease or ingress of dirt. I'd be looking at some factor that causes the seals to fail. Regards G |
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Tjensen |
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Joined: Jul 17 2012
Member No: #954
Location: Bergen |
Thanks for good answers. Will report after both are changed they day after tomorrow. | ||
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Dan595 |
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Joined: Nov 26 2010
Member No: #299
Location: Wiltshire |
Sounds like a fault other than the bearing that is causing this. I have recently had the rear nearside wheel bearing replaced at 150,000 miles (~243,000 km). 2006 car. |
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321dave |
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Joined: Sep 09 2011
Member No: #614
Location: Dublin |
Dan595 wrote ... Sounds like a fault other than the bearing that is causing this. I have recently had the rear nearside wheel bearing replaced at 150,000 miles (~243,000 km). 2006 car. Just a thought, would the incorrect torquing of the rear hub nut cause a bearing to fail prematurely? Kind regards 321dave |
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Tjensen |
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Joined: Jul 17 2012
Member No: #954
Location: Bergen |
The answer is very positive, but technically unclear. They changed both my rear bearings for free (!!!!) and threw in greasing of rear brakes and checking the SOS system as well. But not willing to discuss causes. The car is not bought at this dealer, actually imported, and every warranty is overdue. But one of the bearings was changed by them less than 20 000km ago. Anyway: Superb service! | ||
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Tjensen |
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Joined: Jul 17 2012
Member No: #954
Location: Bergen |
New theory (from this weekends Citroen gathering): The ABS system requires the bearings to be more open than older types. And this makes them very vulnerable to water/dirt/ice coming into the bearing. | ||
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gmerry |
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Joined: Dec 11 2009
Member No: #21
Location: Scotland |
Your theory sounds plausible: the seal is imbedded with magnetic material to make a multi=pole rotor. It does need to be open so that the ABS sensor can "see" the magnetic seal. However yours is the only C6 to have both rear bearings fail at such low mileage??? Regards G |
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