<HTML><HEAD>
<STYLE> body {height: 100%; color:#000000; font-size:12pt; font-family:arial,helvetica,sans-serif;}</STYLE>
</HEAD>
<BODY dir=ltr>
<DIV dir=ltr>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: #000000">
<DIV>Drive shaft hitting the handbrake cable when the car is jacked up. Probably
will go away when sitting on the ground.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: #000000">David
Nock<BR>healeydoc@sbcglobal.net<BR>209 948
8767<BR>www.britishcarspecialists.com<BR><BR>Help us have our Founder Norman
Nock inducteed into the <BR>British Sportscar Hall of Fame, You can vote for
your favorites <BR>by visiting the site
at.<BR>www.britishsportscarhalloffame.org<BR></DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<DIV style="FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A
title=healeys@autox.team.net>Roger Grace via Healeys</A> </DIV>
<DIV><B>Sent:</B> Thursday, August 20, 2020 10:27 AM</DIV>
<DIV><B>To:</B> <A title=healeys@autox.team.net>'healeylist'</A> </DIV>
<DIV><B>Subject:</B> [Healeys] Mystery noise</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<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> </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> </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 data-mce-bogus="1"></DIV>
<DIV> </DIV>
<DIV>Noise does appear to come from transmission.<BR data-mce-bogus="1"></DIV>
<DIV>
<DIV> </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> </DIV>
<DIV>The pulsating/cyclical nature of the noise baffles me and not consistent
<BR>with a bearing failure ?</DIV>
<DIV> </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 data-mce-bogus="1"></DIV>
<DIV> </DIV>Any comments/thoughts appreciated from the more experienced
among us.
<DIV>Tkx </DIV>
<DIV>rg<BR></DIV></DIV>
<P>
<HR>
_______________________________________________<BR>Support Team.Net
http://www.team.net/donate.html<BR>Suggested annual donation
$12.75<BR><BR>Archive: http://www.team.net/pipermail/healeys
http://autox.team.net/archive<BR><BR>Healeys@autox.team.net<BR>http://autox.team.net/mailman/listinfo/healeys<BR><BR>Unsubscribe/Manage:
http://autox.team.net/mailman/options/healeys/healeydoc@gmail.com<BR><BR></DIV></DIV></DIV></BODY></HTML>