--===============3034119735728169378==
boundary="----=_Part_7612630_1637883957.1597957285661"
------=_Part_7612630_1637883957.1597957285661
Content-Transfer-Encoding: 7bit
M,
Thank you and always respect your experienced input.Did you perhaps listen to
the file ?OK will try this again; but when cut engine without prop shaft it
stops abruptly.Will try to listen with engine running.Also I have have the
impression that it is when torque direction is from wheels spinning and trying
to overrun the transmission - like coasting.Will report back.Tkxrg
----- Original Message -----
From: Michael Salter <michaelsalter@gmail.com>
To: Roger Grace <roggrace@telus.net>
Cc: healeylist <healeys@autox.team.net>
Sent: Thu, 20 Aug 2020 13:05:23 -0600 (MDT)
Subject: Re: [Healeys] Mystery noise
Hi Roger, you say "Disconnecting prop shaft to isolate diff not possible as
need the inertia of the rear wheels to produce the pulsing."I think that is
unlikely and would look into that more closely.If you can get access to a
"Chassis Ear" that would probably help a lot.
M
On Thu., Aug. 20, 2020, 1:28 p.m. Roger Grace via Healeys,
<healeys@autox.team.net> wrote:
AH people - fighting a noise in my BJ8 that may or may not be serious.Reluctant
to tear out the tranny unnecessarily and then to find it was something simple !
Notice it at low speed (probably exists at driving speed but too much wind and
engine
noise) if shift to neutral and cut ignition to minimize engine and exhaust
noise.Noise is pulsating - like a tire with a bad spot but seems to be at
prop shaft speed. At first thought that it was at wheel speed and from R
side.So changed out the R wheel bearing.No improvement Then while looking below
noted that universals had some play.So changed out both universals.Rear brakes
not dragging and no binding of wheels.No improvement. 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.
So pulled annulus in situ and replaced both rear bearings. Quieter but still
the pulsating noise while coasting in N. Sound file enclosed is a road test
from about 15 MPH then shift to N and cut engine. Tunnel cover off.
Able to replicate noise with engine on axle stands but not by turning a rear
wheel by hand or with an e motor.
Noise does appear to come from transmission.
To verify is not diff removed one of the rear seats and noise doesn't appear to
be coming from diff area.
Disconnecting prop shaft to isolate diff not possible as need the inertia of
the rear wheels to produce the pulsing. About 5k miles ago I changed out the
larger OD front bearing (sourced from
Moss ... ?) in the OD.OD works fine and transmission shifts and works OK
without unusual
noises.
The pulsating/cyclical nature of the noise baffles me and not consistent
with a bearing failure ?
Given that it occurs in neutral with no gears meshing it surely is not a bad
gear tooth etc.
OD not engaged so it is locked so not likely there.
Removed gearbox top cover and did inspection - nothing obvious.
So to my mind this only leaves the GB rear bearing ?Or maybe a broken circlip
or thrust washer and probably on main shaft external to gearbox ?
or half shaft ?
Any comments/thoughts appreciated from the more experienced among us.Tkxrg
_______________________________________________
Archive: http://www.team.net/pipermail/healeyshttp://autox.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
Is
------=_Part_7612630_1637883957.1597957285661
Content-Transfer-Encoding: quoted-printable
<html><head><style> body {height: 100%; color:#000000; font-size:12pt; font=
-family:arial,helvetica,sans-serif;}</style></head><body><div>M,<br></div><=
div>Thank you and always respect your experienced input.<br data-mce-bogus=
=3D"1"></div><div>Did you perhaps listen to the file ?<br data-mce-bogus=3D=
"1"></div><div>OK will try this again; but when cut engine without prop sha=
ft it stops abruptly.<br data-mce-bogus=3D"1"></div><div>Will try to listen=
with engine running.<br data-mce-bogus=3D"1"></div><div>Also I have have t=
he impression that it is when torque direction is from wheels spinning and =
trying to overrun the transmission - like coasting.<br data-mce-bogus=3D"1"=
></div><div>Will report back.</div><div>Tkx<br data-mce-bogus=3D"1"></div><=
div>rg<br data-mce-bogus=3D"1"></div><div><br></div><div>----- Original Mes=
sage -----<br>From: Michael Salter <michaelsalter@gmail.com><br>To: R=
oger Grace <roggrace@telus.net><br>Cc: healeylist <healeys@autox.t=
eam.net><br>Sent: Thu, 20 Aug 2020 13:05:23 -0600 (MDT)<br>Subject: Re: =
[Healeys] Mystery noise<br></div><div><br></div><div dir=3D"auto"><div>Hi R=
oger, you say "<span style=3D"font-family: sans-serif; font-size: 12.8px;" =
data-mce-style=3D"font-family: sans-serif; font-size: 12.8px;">Disconnectin=
g prop shaft to isolate diff not possible as need the inertia of the rear w=
heels to produce </span><span style=3D"font-family: sans-serif; font-s=
ize: 12.8px;" data-mce-style=3D"font-family: sans-serif; font-size: 12.8px;=
">the pulsing."</span></div><div dir=3D"auto"><span data-mce-style=3D"font-=
family: sans-serif;" style=3D"font-family: sans-serif;" face=3D"sans-serif"=
><span style=3D"font-size: 12.8px;" data-mce-style=3D"font-size: 12.8px;">I=
think that is unlikely and would look into that more closely.</span></span=
></div><div dir=3D"auto"><span data-mce-style=3D"font-family: sans-serif;" =
style=3D"font-family: sans-serif;" face=3D"sans-serif"><span style=3D"font-=
size: 12.8px;" data-mce-style=3D"font-size: 12.8px;">If you can get access =
to a "Chassis Ear" that would probably help a lot.</span></span></div><div =
dir=3D"auto"><span data-mce-style=3D"font-family: sans-serif;" style=3D"fon=
t-family: sans-serif;" face=3D"sans-serif"><span style=3D"font-size: 12.8px=
;" data-mce-style=3D"font-size: 12.8px;"><br></span></span></div><div dir=
=3D"auto"><span data-mce-style=3D"font-family: sans-serif;" style=3D"font-f=
amily: sans-serif;" face=3D"sans-serif"><span style=3D"font-size: 12.8px;" =
data-mce-style=3D"font-size: 12.8px;">M</span></span></div><div dir=3D"auto=
"><span data-mce-style=3D"font-family: sans-serif;" style=3D"font-family: s=
ans-serif;" face=3D"sans-serif"><span style=3D"font-size: 12.8px;" data-mce=
-style=3D"font-size: 12.8px;"><br></span></span><br><div class=3D"gmail_quo=
te" dir=3D"auto"><div dir=3D"ltr" class=3D"gmail_attr">On Thu., Aug. 20, 20=
20, 1:28 p.m. Roger Grace via Healeys, <<a href=3D"mailto:healeys@autox.=
team.net" target=3D"_blank" data-mce-href=3D"mailto:healeys@autox.team.net"=
>healeys@autox.team.net</a>> wrote:<br></div><blockquote class=3D"gmail_=
quote" style=3D"margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-le=
ft: 1ex;" data-mce-style=3D"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>&nb=
sp;</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 t=
ire with a bad spot but seems to be at <br>prop shaft speed.</div><div>&nbs=
p;</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 so=
me play.</div><div>So changed out both universals.</div><div>Rear brakes no=
t dragging and no binding of wheels.</div><div>No improvement.</div><div>&n=
bsp;</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.</d=
iv><div><br></div><div>So pulled annulus in situ and replaced both rear bea=
rings. 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 rea=
r 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 ver=
ify is not diff removed one of the rear seats and noise doesn't appear to b=
e 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 pul=
sing.</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>noi=
ses.</div><div><br></div><div>The pulsating/cyclical nature of the noise ba=
ffles me and not consistent <br>with a bearing failure ?</div><div><br></di=
v><div>Given that it occurs in neutral with no gears meshing it surely is n=
ot a bad gear tooth etc.<br></div><div>OD not engaged so it is locked so no=
t 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 probabl=
y on main shaft external to gearbox ?<br></div><div>or half shaft ?<br></di=
v><div><br></div>Any comments/thoughts appreciated from the more experience=
d among us.<div>Tkx</div><div>rg<br></div></div></div>_____________________=
__________________________<br><div><br></div>Support Team.Net <a href=3D"ht=
tp://www.team.net/donate.html" rel=3D"noreferrer noreferrer" target=3D"_bla=
nk" data-mce-href=3D"http://www.team.net/donate.html";>http://www.team.net/d=
onate.html</a><br><div><br></div>Suggested annual donation $12.75<br>=
<div><br></div><br>Archive: <a href=3D"http://www.team.net/pipermail/healey=
s" rel=3D"noreferrer noreferrer" target=3D"_blank" data-mce-href=3D"http://=
www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a><a=
href=3D"http://autox.team.net/archive"; rel=3D"noreferrer noreferrer" targe=
t=3D"_blank" data-mce-href=3D"http://autox.team.net/archive";>http://autox.t=
eam.net/archive</a><br><div><br></div><a href=3D"mailto:Healeys@autox.team.=
net" target=3D"_blank" rel=3D"noreferrer" data-mce-href=3D"mailto:Healeys@a=
utox.team.net">Healeys@autox.team.net</a><br><a href=3D"http://autox.team.n=
et/mailman/listinfo/healeys" rel=3D"noreferrer noreferrer" target=3D"_blank=
" data-mce-href=3D"http://autox.team.net/mailman/listinfo/healeys";>http://a=
utox.team.net/mailman/listinfo/healeys</a><br><div><br></div><br>Unsubscrib=
e/Manage: <a href=3D"http://autox.team.net/mailman/options/healeys/michaels=
alter@gmail.com" rel=3D"noreferrer noreferrer" target=3D"_blank" data-mce-h=
ref=3D"http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.co=
m">http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com</a=
><br><div><br></div>Is<br></blockquote></div></div></div><div><br></div><di=
v><br></div></body></html>
------=_Part_7612630_1637883957.1597957285661--
--===============3034119735728169378==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============3034119735728169378==--
|