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Rear Bearings Failure, why ?
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Tjensen   
Fri May 15 2015, 06:22pm
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
cruiserphil   
Fri May 15 2015, 09:47pm

Joined: Jan 24 2010
Member No: #38
Location: Celbridge
 Tjensen,

Standing unused for two months each year may be a contributory factor.
Best regards,

Phil C.
arconell3   
Fri May 15 2015, 11:42pm
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   
Sat May 16 2015, 08:31am
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).
gmerry   
Sat May 16 2015, 05:12pm
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
Tjensen   
Sat May 16 2015, 07:56pm
Joined: Jul 17 2012
Member No: #954
Location: Bergen
 Thanks for good answers. Will report after both are changed they day after tomorrow.
Dan595   
Mon May 18 2015, 08:31am
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.
321dave   
Mon May 18 2015, 12:05pm
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
Tjensen   
Mon May 18 2015, 12:31pm
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!
Tjensen   
Mon May 25 2015, 08:44pm
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.
gmerry   
Mon May 25 2015, 10:11pm
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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