Wheel bearings

Technical questions and answers about the Mazda Bongo

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dp bradford
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Wheel bearings

Post by dp bradford » Mon Oct 22, 2007 4:13 pm

My Freda's developed what I think might be a dodgy rear wheel bearing. It makes a sort of shuz shuz shuz[1] noise, the frequency of which seems to correspond to road speed. If I'm turning right it goes away and if I turn left it gets louder - it definitely sounds as though it's coming from the rear of the vehicle; from this I'm thinking it's probably the off side rear one. The sound is only noticable below about 25 mph when coasting.

I jacked up the rear yesterday but I couldn't feel any play at the wheel - does anyone have any suggestions about how to diagnose the problem properly?

Dave

[1] How on earth are you supposed to spell peculiar sounds? :roll:
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heatherpetch

Post by heatherpetch » Mon Oct 22, 2007 4:21 pm

we have just develped the same noise from front near side,only hear it at slow sppeds,we thought the wheel bearing garage said cv joint,
£100.00 +vat :evil:
francophile1947
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Post by francophile1947 » Mon Oct 22, 2007 5:11 pm

heatherpetch wrote:we have just develped the same noise from front near side,only hear it at slow sppeds,we thought the wheel bearing garage said cv joint,
£100.00 +vat :evil:
No CV joints at the back.
Dave, have you felts the hubs for heat? - may be sticking brakes.
John
(Evidence that intelligent life exists in the universe, is that it hasn't tried to contact us)
dp bradford
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Post by dp bradford » Mon Oct 22, 2007 6:49 pm

francophile1947 wrote:...
Dave, have you felts the hubs for heat? - may be sticking brakes.
I'll try that tomorrow after a run - thanks :D

Dave
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smartmonkey

Post by smartmonkey » Tue Oct 23, 2007 12:31 pm

It does sound very like a wheelbearing. If you have a 2 wheel drive with no LSD you can jack up the affected side and let the engine spin it up. You will certainly hear it if its a bearing. Don't run it for long like that because the diff doesn't like it. If you can be bothered to get all 4 wheels off the ground then you can check a 4WD the same way. Sometimes you just have to change a wheel bearing hoping it the right one.
dp bradford
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Post by dp bradford » Tue Oct 23, 2007 12:53 pm

smartmonkey wrote:...Sometimes you just have to change a wheel bearing hoping it the right one.
How big a job is it, and do you need specialist tools? I'm thinking maybe a visit to a Bongo friendly garage might be in order, any idea how long it'd take a mechanic to do the job?

Dave
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