Jack up the wheel and spin it by hand. If the bearing is bad, you'll
know
right away (rumble rumble).
Those rear bearings don't go bad very often, since they are
well-protected
from the weather, unlike the fronts.
--
TeGGeR®
+++++++++++++++++++++++++++++++++++++++++++
In a post some time ago in thsi NG I think you mentioned
that an unloaded wheel bearing could be silent.
This one is "silent" tothe ear. I am going to use a
high gain mic/amp to listen to weak sounds. If
nothing else I am learing "stuff" that might help
myself someday. I have to dig out an electronic
stethoscope I built 3+ decades ago that used a
crystal phono cartridge coupled to a uA709
for just this task. At the time my Honda CB350
was acting funny and I suspected the front wheel
bearings.
Would you agree the risk of the bearing siezing is
minimal with the conditions Istated?
Terry
>> Jack up the wheel and spin it by hand. If the bearing is bad, you'll
>> know
[quoted text clipped - 6 lines]
> In a post some time ago in thsi NG I think you mentioned
> that an unloaded wheel bearing could be silent.
Not me. Every bad bearing I have personally encountered was either rough to
the hand when spun, or rumbled audibly. I'm sure some are silnet, but I
don't know how common that is.
Bearings normally go bad for three reasons:
1) Water ingress that causes rust (fronts are prone to this), or
2) impact that damages the balls or puts little dents in the races, or
3) the surface of the balls starts flaking off from compression stress
(typical of transmission bearings).
All of these conditions normally result in noise.
<snip>
> Would you agree the risk of the bearing siezing is
> minimal with the conditions Istated?
Yes. Very minimal.
But...Tell your friend to keep an ear out for odd noises. If he suddenly
starts hearing a very loud howling from the rear, STOP THE CAR IMMEDIATELY!

Signature
TeGGeR®
The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
r2000swler@hotmail.com - 21 Sep 2005 14:51 GMT
Not me. Every bad bearing I have personally encountered was either
rough to
the hand when spun, or rumbled audibly. I'm sure some are silnet, but I
don't know how common that is.
Bearings normally go bad for three reasons:
1) Water ingress that causes rust (fronts are prone to this), or
2) impact that damages the balls or puts little dents in the races, or
3) the surface of the balls starts flaking off from compression stress
(typical of transmission bearings).
All of these conditions normally result in noise.
<snip>
> Would you agree the risk of the bearing siezing is
> minimal with the conditions Istated?
Yes. Very minimal.
But...Tell your friend to keep an ear out for odd noises. If he
suddenly
starts hearing a very loud howling from the rear, STOP THE CAR
IMMEDIATELY!
--
TeGGeR®
+++++++++++++++++++++++++++++++++++++++++
I have relayed your comments to him and I am certain he will follow
the advice. I will not be able to get over unitl Sat afternoon, I will
test it
and post the results here. I found my usper doper eletcronic
stethyscope and it still works! I intend to jack my car up and listen
to what I think are good bearings to get a feel for how "noisy" they
are.
I ambettingthat one could capture the soundandrun it through a PC
wiht an audio FFT/waterfall program and detect war long before
failure.
Terry