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Wheel Bearing? Hit curb now there's noise!

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Skymongrel
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Wheel Bearing? Hit curb now there's noise!

Post by Skymongrel »

2006 XC70 158k last week I slid on ice and slowly whacked a curb with the wheels turned such that the curb and wheel were parallel on contact.

I immediately noticed a low volume rhythmic hum coming from the front wheel area after I drove away. I have absolutely no vibrations coming from the wheel at all. And the only visible damage is some nasty road rash on the wheel.

I'm thinking it's the wheel bearing? Thoughts?
Thanks!
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Re: Wheel Bearing? Hit curb now there's noise!

Post by abscate »

Wheel bearing or CV joint damage.

Wheel bearing will whir much more when the front end is steered away from the bad bearing. Try this at about 35 mph
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Re: Wheel Bearing? Hit curb now there's noise!

Post by - Pete - »

If it's/they've never been replaced, I'd say it was just hanging on by a thread & the curb was the straw that broke the camels back. They tend to make noise at 150-160k mile intervals, in my experience.
2001 V70XC 146k
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abscate
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Re: Wheel Bearing? Hit curb now there's noise!

Post by abscate »

- Pete - wrote: Fri Jan 24, 2020 10:15 pm If it's/they've never been replaced, I'd say it was just hanging on by a thread & the curb was the straw that broke the camels back. They tend to make noise at 150-160k mile intervals, in my experience.
Just in MN and NY

The make special bearings In IA that last forever.
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Re: Wheel Bearing? Hit curb now there's noise!

Post by - Pete - »

Yeah, isn’t that the same state that never has bad ignition coils as well? I know I read something about potatoes making everything last longer.
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Re: Wheel Bearing? Hit curb now there's noise!

Post by oragex »

Depending how bad it hit, the strut may also bent at the lower portion, so give it a look (I've seen this once). This would affect the wheel geometry and may cause the tire to get noisy

Just before removing the bearing (which is not fun), when you had stripped the axle, brakes bracket and rotor, turn the bearing by hand - if it's rough then can go removing the 4 bolts and getting the puller on (I recommend a solid 3 hooks puller)

Also, is the steering staying centered when going straight on the highway ? Otherwise may suspect wrong geometry
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Re: Wheel Bearing? Hit curb now there's noise!

Post by - Pete - »

That's a really great point about the bend strut bottom & a total possibility.

If you have air tools, a puller isn't necessary. I usually just back the 4 bolts out all the way, then run 2 of the 4 back in 3-4 half-turns. Put a socket on those, then use an air hammer to smack the heads of the bolts (through the 1/2' square hole in the top of the socket). Pops the bearing assy out in seconds/just a few hits with the air hammer.
2001 V70XC 146k
2004 V70 AWD 141k
2004 V70R M66 144k
2004 XC70 287k
2006 XC70 155k Sold
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Re: Wheel Bearing? Hit curb now there's noise!

Post by Skymongrel »

Doh! Sorry guys didn't see these replies, must have been monitoring my other problem. It was a low impact hit at about 5mph, but the car did bounce off curb (on ice). Noise hasn't gotten any worse but I don't put lots of miles per day. Other than the noise car doesn't behave differently. BTW it's a rythmic hum, not overly load (yet).

I've tried the swerve test to see if noise changes. But haven't noticed a definitive difference. I will try again at 35 mph! Good advice.
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