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How to diagnose wheel bearing failure? 

 

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 Post subject: How to diagnose wheel bearing failure?
Posted: Wed Feb 18, 2009 12:52 pm 
Tyre Shredder
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Age: 36

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Ride: AU111 XR6 VCT Supercharged

Location: Brisbane
QLD, Australia

Hi Fellas,

I have an AU which is making some humming noises which I think are front wheel bearing related.

So far I know that the noise is not engine or gearbox related, as it continues at speeds above 60km/h when the engine is taken out of gear (rolling in neutral). The noise becomes louder when the suspension is loaded up through a corner.

I've tried to listen to different areas of the car by lowering the different windows, but can't distinguish any one side. Does this sound like front wheel bearings, and is there a more definitive way to diagnose this?

Thanks,
Joe

 

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 Post subject: Re: How to diagnose wheel bearing failure?
Posted: Wed Feb 18, 2009 1:09 pm 
Getting Side Ways
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jack the car up and spin the wheel..

could also be the brake pads down to their minimum wear indicators

 

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 Post subject: Re: How to diagnose wheel bearing failure?
Posted: Wed Feb 18, 2009 5:14 pm 
Tyre Shredder
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Age: 36

Posts: 387

Joined: 30th Nov 2007

Ride: AU111 XR6 VCT Supercharged

Location: Brisbane
QLD, Australia

Regie, brake pads are brand new (1000kms). When I jack the car up and spin the wheel, should there be an obvious sound which indicates worn bearings?

 

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FOR SALE! - Supercharged AUIII XR6 VCT, intercooled, T5, big brakes.... details in the 'For Sale' section - ford-parts-for-sale-f17/fs-supercharged-au-xr6-vct-series-iii-intercooled-rwc-rego-t114254.html

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 Post subject: Re: How to diagnose wheel bearing failure?
Posted: Wed Feb 18, 2009 9:12 pm 
Getting Side Ways
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Ride: 2009 FG XR6 Sedan

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The AU being a hub assembly which also houses the unservicable bearings its tested by removing the wheel and removing caliper (or make sure pads arent touching rotor) turn the hub and it should be smooth and quiet. If not it needs to be replaced. To replace its a simple job of removing dust cap and removing hub locknut to remove hub assembly.

 

 

Attachments:
AU-BF Front hub assembly.jpg
AU-BF Front hub assembly.jpg [ 39.93 KiB | Viewed 65 times ]
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 Post subject: Re: How to diagnose wheel bearing failure?
Posted: Thu Feb 19, 2009 10:51 am 
Tyre Shredder
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Age: 36

Posts: 387

Joined: 30th Nov 2007

Ride: AU111 XR6 VCT Supercharged

Location: Brisbane
QLD, Australia

Awesome Joolz - thats some great info. Thanks for posting up that diagram. Thats all I need to diagnose properly, and will be helpful with fitting if necessary.

Super helpful.

Cheers,
Joe

 

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FOR SALE! - Supercharged AUIII XR6 VCT, intercooled, T5, big brakes.... details in the 'For Sale' section - ford-parts-for-sale-f17/fs-supercharged-au-xr6-vct-series-iii-intercooled-rwc-rego-t114254.html

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