RE: SER1 (Not) Normal Noise rear axle/Diff ?!

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From: Tom Tollefson
Subject: RE: SER1 (Not) Normal Noise rear axle/Diff ?!
Date: 15:17 on 02 Nov 2004
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Hello Uli
I have seen this sort of thing before( the dimple) They are caused by
sheared off bolt heads from the diff carrier. What happens is, over time,
the 10 or so bolts that hold the crown wheel to the differential carrier
come loose and eventually breal off. the pieces then get picked up by the
spinning crown wheel and dent or puncture the axle casing.
Or worse, damage the differential by breaking off teeth( that could be the
clicking noise)
It would definately be a good idea to open and inspect the differential
because one sheared bolt means more to follow.

Tom Tollefson
  -----Original Message-----
  From: series1-host@xxxxxxxxx.xxx [mailto:series1-host@xxxxxxxxx.xxx]On
Behalf Of Tom Wykes
  Sent: November 2, 2004 8:49 AM
  To: series1@xxxxxxxxx.xxx
  Subject: Re: SER1 (Not) Normal Noise rear axle/Diff ?!



  If the noise is coming from the dimple try putting a big screwdriver or
other metal shaft on the outside of the dimple and put the other end of the
shaft in your ear. If the noise is louder there than anywhere else on the
housing then it's a good chance that, that is where the noise is coming
from. and try it on other parts of the axle. You could also work out the
gearing and count how many clicks you get in one rotation of the wheels this
should also give you a clue as to where the noise is coming from.


  At 13:37 02/11/2004, you wrote:


    Hello All,

    S1 86" 1955, rear axle, completely restored in nearly as new condition.
No oil filled in, no brakedrums fitted.

    I have a noise, when turning the wheels. It´s a light metalic
clickclickclick which sounds like a missing roll in a bearing, but
everything is okay or new. Is that only why there is no oil in the diff/axle
and that could be the clickclick from turning with the dry halfshafts the
dry 3 gearwheels in the diff ?

    I have also a small but ca. 3 mm deep dimple in the back of the diff
housing. Is it possible, that the teeth of the large planetary wheel
scratches against the innerside and make that noise ? How much
space/distance is between the large planetary wheel and the housingwall ?

    I´m not very amused about a second opening of the whole axle, both
halfshafts out, diff out for seeing nothing, brcause evrything is finished
in black paint.

    Greetings from Germany

    Uli






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  Regards.

  Tom Wykes.



  PCB Designer
  Cambridge Broadband.
  Tel.+44 (0)1223 703000
  Fax.+44 (0)1223 703001
  DDI. +44 (0)1223 703044
  tw@xxxxxxxxxxxxxxxxxx.xxx
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  If you don't live life on the edge, you're taking up too much space.


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<BODY>
<DIV><SPAN class=3D616040715-02112004><FONT face=3DArial color=3D#0000ff =
size=3D2>Hello=20
Uli</FONT></SPAN></DIV>
<DIV><SPAN class=3D616040715-02112004><FONT face=3DArial color=3D#0000ff =
size=3D2>I have=20
seen this sort of thing before( the dimple) They are caused by sheared =
off bolt=20
heads from the diff carrier. What happens is, over time, the 10 or so =
bolts that=20
hold the crown wheel to the differential carrier come loose and =
eventually breal=20
off. the pieces then get picked up by the spinning crown wheel and dent =
or=20
puncture the axle casing.</FONT></SPAN></DIV>
<DIV><SPAN class=3D616040715-02112004><FONT face=3DArial color=3D#0000ff =
size=3D2>Or=20
worse, damage the differential by breaking off teeth( that could be the =
clicking=20
noise) </FONT></SPAN></DIV>
<DIV><SPAN class=3D616040715-02112004><FONT face=3DArial color=3D#0000ff =
size=3D2>It=20
would definately be a good idea to open and inspect the differential =
because one=20
sheared bolt means more to follow.</FONT></SPAN></DIV>
<DIV><SPAN class=3D616040715-02112004><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D616040715-02112004><FONT face=3DArial color=3D#0000ff =
size=3D2>Tom=20
Tollefson</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B> =
series1-host@xxxxxxxxx.xxx=20
  [mailto:series1-host@xxxxxxxxx.xxx]<B>On Behalf Of </B>Tom=20
  Wykes<BR><B>Sent:</B> November 2, 2004 8:49 AM<BR><B>To:</B>=20
  series1@xxxxxxxxx.xxx<BR><B>Subject:</B> Re: SER1 (Not) Normal Noise =
rear=20
  axle/Diff ?!<BR><BR></FONT></DIV><BR>If the noise is coming from the =
dimple=20
  try putting a big screwdriver or other metal shaft on the outside of =
the=20
  dimple and put the other end of the shaft in your ear. If the noise is =
louder=20
  there than anywhere else on the housing then it's a good chance that, =
that is=20
  where the noise is coming from. and try it on other parts of the axle. =
You=20
  could also work out the gearing and count how many clicks you get in =
one=20
  rotation of the wheels this should also give you a clue as to where =
the noise=20
  is coming from.<BR><BR><BR>At 13:37 02/11/2004, you wrote:<BR><BR>
  <BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite">Hello All,<BR><BR>S1 =
86" 1955,=20
    rear axle, completely restored in nearly as new condition. No oil =
filled in,=20
    no brakedrums fitted.<BR><BR>I have a noise, when turning the =
wheels. It=B4s a=20
    light metalic clickclickclick which sounds like a missing roll in a =
bearing,=20
    but everything is okay or new. Is that only why there is no oil in =
the=20
    diff/axle and that could be the clickclick from turning with the dry =

    halfshafts the dry 3 gearwheels in the diff ?<BR><BR>I have also a =
small but=20
    ca. 3 mm deep dimple in the back of the diff housing. Is it =
possible, that=20
    the teeth of the large planetary wheel scratches against the =
innerside and=20
    make that noise ? How much space/distance is between the large =
planetary=20
    wheel and the housingwall ? <BR><BR>I=B4m not very amused about a =
second=20
    opening of the whole axle, both halfshafts out, diff out for seeing =
nothing,=20
    brcause evrything is finished in black paint.<BR><BR>Greetings from=20
    Germany<BR><BR>Uli<BR><BR>&nbsp;<BR><BR>&nbsp;<BR><BR>
    <HR>
    Blocken ist die beste Verteidigung. MSN Toolbar mit Pop-up-Blocker. =
<A=20
    href=3D"http://g.msn.com/8HMBDEDE/2740??PS=3D47575">Jetzt kostenlos=20
    downloaden!</A> To change subscription see <A=20
    href=3D"http://www.landrover.net/series1/mail"=20
    eudora=3D"autourl">www.landrover.net/series1/mail</A> =
</BLOCKQUOTE><X-SIGSEP>
  <P></X-SIGSEP><BR>Regards.<BR><BR>Tom Wykes.<BR><BR><BR><BR>PCB=20
  Designer<BR>Cambridge Broadband.<BR>Tel.+44 (0)1223 703000<BR>Fax.+44 =
(0)1223=20
  703001<BR>DDI. +44 (0)1223 703044<BR>tw@xxxxxxxxxxxxxxxxxx.xxx<BR><A=20
  href=3D"http://www.cambridgebroadband.com/"=20
  eudora=3D"autourl">www.cambridgebroadband.com<BR><BR></A>If you don't =
live life=20
  on the edge, you're taking up too much =
space.<BR></P></BLOCKQUOTE></BODY></HTML>

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