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<p>Pretty sure dave Nock nailed it..<br>
</p>
<div class="moz-cite-prefix">On 8/20/2020 3:01 PM, Roger Grace via
Healeys wrote:<br>
</div>
<blockquote type="cite"
cite="mid:177754257.7612631.1597957285661.JavaMail.zimbra@mailid.telus.net">
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<div>M,<br>
</div>
<div>Thank you and always respect your experienced input.<br
data-mce-bogus="1">
</div>
<div>Did you perhaps listen to the file ?<br data-mce-bogus="1">
</div>
<div>OK will try this again; but when cut engine without prop
shaft it stops abruptly.<br data-mce-bogus="1">
</div>
<div>Will try to listen with engine running.<br data-mce-bogus="1">
</div>
<div>Also I have have the impression that it is when torque
direction is from wheels spinning and trying to overrun the
transmission - like coasting.<br data-mce-bogus="1">
</div>
<div>Will report back.</div>
<div>Tkx<br data-mce-bogus="1">
</div>
<div>rg<br data-mce-bogus="1">
</div>
<div><br>
</div>
<div>----- Original Message -----<br>
From: Michael Salter <a class="moz-txt-link-rfc2396E" href="mailto:michaelsalter@gmail.com"><michaelsalter@gmail.com></a><br>
To: Roger Grace <a class="moz-txt-link-rfc2396E" href="mailto:roggrace@telus.net"><roggrace@telus.net></a><br>
Cc: healeylist <a class="moz-txt-link-rfc2396E" href="mailto:healeys@autox.team.net"><healeys@autox.team.net></a><br>
Sent: Thu, 20 Aug 2020 13:05:23 -0600 (MDT)<br>
Subject: Re: [Healeys] Mystery noise<br>
</div>
<div><br>
</div>
<div dir="auto">
<div>Hi Roger, you say "<span style="font-family: sans-serif;
font-size: 12.8px;" data-mce-style="font-family: sans-serif;
font-size: 12.8px;">Disconnecting prop shaft to isolate diff
not possible as need the inertia of the rear wheels to
produce </span><span style="font-family: sans-serif;
font-size: 12.8px;" data-mce-style="font-family: sans-serif;
font-size: 12.8px;">the pulsing."</span></div>
<div dir="auto"><span data-mce-style="font-family: sans-serif;"
style="font-family: sans-serif;" face="sans-serif"><span
style="font-size: 12.8px;" data-mce-style="font-size:
12.8px;">I think that is unlikely and would look into that
more closely.</span></span></div>
<div dir="auto"><span data-mce-style="font-family: sans-serif;"
style="font-family: sans-serif;" face="sans-serif"><span
style="font-size: 12.8px;" data-mce-style="font-size:
12.8px;">If you can get access to a "Chassis Ear" that
would probably help a lot.</span></span></div>
<div dir="auto"><span data-mce-style="font-family: sans-serif;"
style="font-family: sans-serif;" face="sans-serif"><span
style="font-size: 12.8px;" data-mce-style="font-size:
12.8px;"><br>
</span></span></div>
<div dir="auto"><span data-mce-style="font-family: sans-serif;"
style="font-family: sans-serif;" face="sans-serif"><span
style="font-size: 12.8px;" data-mce-style="font-size:
12.8px;">M</span></span></div>
<div dir="auto"><span data-mce-style="font-family: sans-serif;"
style="font-family: sans-serif;" face="sans-serif"><span
style="font-size: 12.8px;" data-mce-style="font-size:
12.8px;"><br>
</span></span><br>
<div class="gmail_quote" dir="auto">
<div dir="ltr" class="gmail_attr">On Thu., Aug. 20, 2020,
1:28 p.m. Roger Grace via Healeys, <<a
href="mailto:healeys@autox.team.net" target="_blank"
data-mce-href="mailto:healeys@autox.team.net"
moz-do-not-send="true">healeys@autox.team.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin: 0 0 0 .8ex;
border-left: 1px #ccc solid; padding-left: 1ex;"
data-mce-style="margin: 0 0 0 .8ex; border-left: 1px #ccc
solid; padding-left: 1ex;">
<div>
<div>
<div>AH people - fighting a noise in my BJ8 that may
or may not be serious.</div>
<div>Reluctant to tear out the tranny unnecessarily
and then to find it was something simple !<br>
</div>
<div> </div>
<div>Notice it at low speed (probably exists at
driving speed but too much wind and engine <br>
noise) if shift to neutral and cut ignition to
minimize engine and exhaust noise.</div>
<div>Noise is pulsating - like a tire with a bad spot
but seems to be at <br>
prop shaft speed.</div>
<div> </div>
<div>At first thought that it was at wheel speed and
from R side.</div>
<div>So changed out the R wheel bearing.</div>
<div>No improvement</div>
<div> </div>
<div>Then while looking below noted that universals
had some play.</div>
<div>So changed out both universals.</div>
<div>Rear brakes not dragging and no binding of
wheels.</div>
<div>No improvement.</div>
<div> </div>
<div>Did listening on hoist with others listening too.
Consensus was that there was a noise at rear OD area
as well as the pulsating one.</div>
<div><br>
</div>
<div>So pulled annulus in situ and replaced both rear
bearings. Quieter but still the pulsating noise
while coasting in N.</div>
<div> </div>
<div>Sound file enclosed is a road test from about 15
MPH then shift to N and cut engine. Tunnel cover
off.<br>
</div>
<div><br>
</div>
<div>Able to replicate noise with engine on axle
stands but not by turning a rear wheel by hand or
with an e motor.<br>
</div>
<div><br>
</div>
<div>Noise does appear to come from transmission.<br>
</div>
<div>
<div><br>
</div>
<div>To verify is not diff removed one of the rear
seats and noise doesn't appear to be coming from
diff area.<br>
</div>
<div>Disconnecting prop shaft to isolate diff not
possible as need the inertia of the rear wheels to
produce the pulsing.</div>
</div>
<div> </div>
<div>About 5k miles ago I changed out the larger OD
front bearing (sourced from <br>
Moss ... ?) in the OD.</div>
<div>OD works fine and transmission shifts and works
OK without unusual <br>
noises.</div>
<div><br>
</div>
<div>The pulsating/cyclical nature of the noise
baffles me and not consistent <br>
with a bearing failure ?</div>
<div><br>
</div>
<div>Given that it occurs in neutral with no gears
meshing it surely is not a bad gear tooth etc.<br>
</div>
<div>OD not engaged so it is locked so not likely
there.<br>
</div>
<div>Removed gearbox top cover and did inspection -
nothing obvious.<br>
</div>
<div>So to my mind this only leaves the GB rear
bearing ?</div>
<div>Or maybe a broken circlip or thrust washer and
probably on main shaft external to gearbox ?<br>
</div>
<div>or half shaft ?<br>
</div>
<div><br>
</div>
Any comments/thoughts appreciated from the more
experienced among us.
<div>Tkx</div>
<div>rg<br>
</div>
</div>
</div>
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Is<br>
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<pre class="moz-signature" cols="72">--
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