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Have you tried to locate with a mechanics stethoscope?
Dave
> On Aug 20, 2020, at 2:11 PM, John Harper via Healeys =
<healeys@autox.team.net> wrote:
>=20
> Roger
>=20
> As you have said that you have changed both universals, is there =
chance that you have reassembled the shaft out of phase? This is easily =
fitted wrongly. Both universals have to be exactly in line and you =
should be able to see small pointers engraved on each side of the =
sliding sections that have to line up so that splines are correctly =
aligned.
>=20
> On Thu, 20 Aug 2020 at 18:27, Roger Grace via Healeys =
> 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 !
> =20
> Notice it at low speed (probably exists at driving speed but too much =
wind and engine=20
> 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=20
> prop shaft speed.
> =20
> At first thought that it was at wheel speed and from R side.
> So changed out the R wheel bearing.
> No improvement
> =20
> 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.
> =20
> 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.
>=20
> So pulled annulus in situ and replaced both rear bearings. Quieter but =
still the pulsating noise while coasting in N.
> =20
> Sound file enclosed is a road test from about 15 MPH then shift to N =
and cut engine. Tunnel cover off.
>=20
> Able to replicate noise with engine on axle stands but not by turning =
a rear wheel by hand or with an e motor.
>=20
> Noise does appear to come from transmission.
>=20
> 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.
> =20
> About 5k miles ago I changed out the larger OD front bearing (sourced =
from=20
> Moss ... ?) in the OD.
> OD works fine and transmission shifts and works OK without unusual=20
> noises.
>=20
> The pulsating/cyclical nature of the noise baffles me and not =
consistent=20
> with a bearing failure ?
>=20
> 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 ?
>=20
> Any comments/thoughts appreciated from the more experienced among us.
> Tkx
> rg
> _______________________________________________
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>=20
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>=20
>=20
>=20
> --=20
> Best wishes
>=20
> John Harper
>=20
> AHC UK 100 Register Secretary
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
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>=20
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>=20
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">Have =
you tried to locate with a mechanics stethoscope?<div class=3D""><br =
class=3D""></div><div class=3D"">Dave<br class=3D""><div><br =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D"">On Aug =
20, 2020, at 2:11 PM, John Harper via Healeys <<a =
href=3D"mailto:healeys@autox.team.net"; =
class=3D"">healeys@autox.team.net</a>> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div dir=3D"ltr" =
class=3D"">Roger<div class=3D""><br class=3D""></div><div class=3D"">As =
you have said that you have changed both universals, is there chance =
that you have reassembled the shaft out of phase? This is easily fitted =
wrongly. Both universals have to be exactly in line and you should be =
able to see small pointers engraved on each side of the sliding =
sections that have to line up so that splines are correctly =
aligned.</div></div><br class=3D""><div class=3D"gmail_quote"><div =
dir=3D"ltr" class=3D"gmail_attr">On Thu, 20 Aug 2020 at 18:27, Roger =
Grace via Healeys <<a href=3D"mailto:healeys@autox.team.net"; =
class=3D"">healeys@autox.team.net</a>> wrote:<br =
class=3D""></div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px 0.8ex;border-left:1px solid =
rgb(204,204,204);padding-left:1ex"><div class=3D""><div class=3D""><div =
class=3D"">AH people - fighting a noise in my BJ8 that may or may not be =
serious.</div><div class=3D"">Reluctant to tear out the tranny =
unnecessarily and then to find it was something simple !<br =
class=3D""></div><div class=3D""> </div><div class=3D"">Notice it =
at low speed (probably exists at driving speed but too much wind and =
engine <br class=3D"">noise) if shift to neutral and cut ignition to =
minimize engine and exhaust noise.</div><div class=3D"">Noise is =
pulsating - like a tire with a bad spot but seems to be at <br =
class=3D"">prop shaft speed.</div><div class=3D""> </div><div =
class=3D"">At first thought that it was at wheel speed and from R =
side.</div><div class=3D"">So changed out the R wheel bearing.</div><div =
class=3D"">No improvement</div><div class=3D""> </div><div =
class=3D"">Then while looking below noted that universals had some =
play.</div><div class=3D"">So changed out both universals.</div><div =
class=3D"">Rear brakes not dragging and no binding of wheels.</div><div =
class=3D"">No improvement.</div><div class=3D""> </div><div =
class=3D"">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 class=3D""><br class=3D""></div><div class=3D"">So pulled =
annulus in situ and replaced both rear bearings. Quieter but still the =
pulsating noise while coasting in N.</div><div class=3D""> </div><div=
class=3D"">Sound file enclosed is a road test from about 15 MPH then =
shift to N and cut engine. Tunnel cover off.<br class=3D""></div><div =
class=3D""><br class=3D""></div><div class=3D"">Able to replicate noise =
with engine on axle stands but not by turning a rear wheel by hand or =
with an e motor.<br class=3D""></div><div class=3D""><br =
class=3D""></div><div class=3D"">Noise does appear to come from =
transmission.<br class=3D""></div><div class=3D""><div class=3D""><br =
class=3D""></div><div class=3D"">To verify is not diff removed one of =
the rear seats and noise doesn't appear to be coming from diff area.<br =
class=3D""></div><div class=3D"">Disconnecting prop shaft to isolate =
diff not possible as need the inertia of the rear wheels to produce the =
pulsing.</div></div><div class=3D""> </div><div class=3D"">About 5k =
miles ago I changed out the larger OD front bearing (sourced from <br =
class=3D"">Moss ... ?) in the OD.</div><div class=3D"">OD works fine and =
transmission shifts and works OK without unusual <br =
class=3D"">noises.</div><div class=3D""><br class=3D""></div><div =
class=3D"">The pulsating/cyclical nature of the noise baffles me and not =
consistent <br class=3D"">with a bearing failure ?</div><div =
class=3D""><br class=3D""></div><div class=3D"">Given that it occurs in =
neutral with no gears meshing it surely is not a bad gear tooth etc.<br =
class=3D""></div><div class=3D"">OD not engaged so it is locked so not =
likely there.<br class=3D""></div><div class=3D"">Removed gearbox top =
cover and did inspection - nothing obvious.<br class=3D""></div><div =
class=3D"">So to my mind this only leaves the GB rear bearing =
?</div><div class=3D"">Or maybe a broken circlip or thrust washer and =
probably on main shaft external to gearbox ?<br class=3D""></div><div =
class=3D"">or half shaft ?<br class=3D""></div><div class=3D""><br =
class=3D""></div>Any comments/thoughts appreciated from the more =
experienced among us.<div class=3D"">Tkx </div><div class=3D"">rg<br =
class=3D""></div></div></div>_____________________________________________=
__<br class=3D"">
Support <a href=3D"http://Team.Net"; class=3D"">Team.Net</a> <a =
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</blockquote></div><br clear=3D"all" class=3D""><div class=3D""><br =
class=3D""></div>-- <br class=3D""><div dir=3D"ltr" =
class=3D"gmail_signature"><div dir=3D"ltr" class=3D"">Best wishes<div =
class=3D""><br class=3D""></div><div class=3D"">John Harper</div><div =
class=3D""><br class=3D""></div><div class=3D"">AHC UK 100 Register =
Secretary</div></div></div>
_______________________________________________<br class=3D"">Support <a =
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