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Re: [Mgs] backing up shudder

To: <mgbob@juno.com>, <mike@duvallvideo.com>
Subject: Re: [Mgs] backing up shudder
From: PaulHunt73 via Mgs <mgs@autox.team.net>
Date: Sun, 21 Jun 2015 08:24:19 +0100
Cc: mgs@autox.team.net
Delivered-to: mharc@autox.team.net
Delivered-to: mgs@autox.team.net
References: <20150620.163903.27199.3@webmail-beta02.vgs.untd.com>
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Any above plus oil on the clutch.  Mine started only after clutch =
replacement, which was annoying, and has been doing it for 50k.  I  just =
use higher revs then I normally would when slipping for reversing, =
others say lower revs reduces it.  C'est la vie.

PaulH.
  ----- Original Message -----=20
  From: mgbob--- via Mgs=20
  To: mike@duvallvideo.com=20
  Cc: mgs@autox.team.net=20
  Sent: Saturday, June 20, 2015 9:39 PM
  Subject: Re: [Mgs] backing up shudder


    Welcome back to the judder club. =20
    In the TD, causes can be all you listed:
     Front mount-possible, I suppose you could use a pry bar gently and =
life engine to see if rubber has un-stuck from the metal. Originals =
lasted 50 years. Today's improved replacements about 1/5 of that. Lift =
gently, though, as you don't want to cause separation if it has not =
already happened.
    Stabiliser-check that movement of engine is about 1/8 inch, which is =
about the "give" in the rubbers. If more, look further, to adjusting the =
bar if there is evidence that the turnbuckle has moved (not likely), and =
inspection of the rubbers.=20
    Transmission mount--from underneath, push up and pull down on the =
gearbox tail or at the flange. There should not be much movement. If the =
rubbers are bulged and cracked, they may be bad. Changing them is not =
complicated, but can be time taking and messy. Oil mess from engine is =
usual cause of their deterioration, though. No need to remove it; just =
shove the gearbox around to judge free movement, of which there should =
be less than 1/8 inch.=20
    Axle U bolts--the usual cause. If you have not already installed =
those wear plates on top of the axle, remove one bolt and feel for =
groove worn where the U bolt passes over axle tube. Buy a pair of the =
wear plates if there is any groove, and not a bad thing to have them =
installed anyway. MGA and later had them on the axles from new.
    Best of luck finding it--this can be a challenge. I have been =
chasing it for a decade.
  Bob


  ---------- Original Message ----------
  From: Mike Duvall via Mgs <mgs@autox.team.net>
  To: mgs@autox.team.net
  Subject: [Mgs] backing up shudder
  Date: Sat, 20 Jun 2015 12:28:20 -0500


  Both my A and TD started jumping or shuddering when backing up.    I =
had this happen before-  seems odd it started again on 2 cars but =
coincidence I'm sure.

  I searched and can't find much so I want to know if I'm missing =
anything.

  Possible:
  front engine mount
  transmission mount  (do I have to take it out to see on the TD?)=20
  axle U bolts=20

  TD engine stabilizer

  TD clutch (seems like might have been the problem last time but what =
do I adjust here)


  Other ideas or what am I missing?   I read pilot bearings but were =
replaced so I doubt much wear.=20

  Thanks, Mike
  _______________________________________________

  Mgs@autox.team.net
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<DIV><FONT size=3D2>Any above plus oil on the clutch.&nbsp; Mine started =
only=20
after clutch replacement, which was annoying, and has been doing it for=20
50k.&nbsp; I&nbsp; just use higher revs then I normally would when =
slipping for=20
reversing, others say lower revs reduces it.&nbsp; C'est la =
vie.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>PaulH.</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"=20
dir=3Dltr>
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: =
black"><B>From:</B>=20
  <A title=3Dmgs@autox.team.net =
href=3D"mailto:mgs@autox.team.net";>mgbob--- via=20
  Mgs</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dmike@duvallvideo.com=20
  href=3D"mailto:mike@duvallvideo.com";>mike@duvallvideo.com</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Cc:</B> <A =
title=3Dmgs@autox.team.net=20
  href=3D"mailto:mgs@autox.team.net";>mgs@autox.team.net</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, June 20, 2015 =
9:39=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [Mgs] backing up=20
  shudder</DIV>
  <DIV><BR></DIV>
  <DIV>&nbsp; Welcome back to the judder club. &nbsp;</DIV>
  <DIV>&nbsp; In the TD, causes can be all you listed:</DIV>
  <DIV>&nbsp; &nbsp;Front mount-possible, I suppose you could use a pry =
bar=20
  gently and life engine to see if rubber has un-stuck from the metal. =
Originals=20
  lasted 50 years. Today's improved replacements about 1/5 of that. Lift =
gently,=20
  though, as you don't want to cause separation if it has not already=20
  happened.</DIV>
  <DIV>&nbsp; Stabiliser-check that movement of engine is about 1/8 =
inch, which=20
  is about the "give" in the rubbers. If more, look further, to =
adjusting the=20
  bar if there is evidence that the turnbuckle has moved (not likely), =
and=20
  inspection of the rubbers.&nbsp;</DIV>
  <DIV>&nbsp; Transmission mount--from underneath, push up and pull down =
on the=20
  gearbox tail or at the flange. There should not be much movement. If =
the=20
  rubbers are bulged and cracked, they may be bad. Changing them is not=20
  complicated, but can be time taking and messy. Oil mess from engine is =
usual=20
  cause of their deterioration, though. No need to remove it; just shove =
the=20
  gearbox around to judge free movement, of which there should be less =
than 1/8=20
  inch.&nbsp;</DIV>
  <DIV>&nbsp; Axle U bolts--the usual cause. If you have not already =
installed=20
  those wear plates on top of the axle, remove one bolt and feel for =
groove worn=20
  where the U bolt passes over axle tube. Buy a pair of the wear plates =
if there=20
  is any groove, and not a bad thing to have them installed anyway. MGA =
and=20
  later had them on the axles from new.</DIV>
  <DIV>&nbsp; Best of luck finding it--this can be a challenge. I have =
been=20
  chasing it for a decade.</DIV>
  <DIV>Bob</DIV>
  <DIV><BR><BR>---------- Original Message ----------<BR>From: Mike =
Duvall via=20
  Mgs &lt;mgs@autox.team.net&gt;<BR>To: mgs@autox.team.net<BR>Subject: =
[Mgs]=20
  backing up shudder<BR>Date: Sat, 20 Jun 2015 12:28:20 =
-0500<BR><BR><BR>Both my=20
  A and TD started jumping or shuddering when backing up. =
&nbsp;&nbsp;&nbsp;I=20
  had this happen before- &nbsp;seems odd it started again on 2 cars but =

  coincidence I=92m sure.<BR><BR>I searched and can=92t find much so I =
want to know=20
  if I=92m missing anything=85<BR><BR>Possible:<BR>front engine=20
  mount<BR>transmission mount &nbsp;(do I have to take it out to see on =
the TD?)=20
  <BR>axle U bolts <BR><BR>TD engine stabilizer<BR><BR>TD clutch (seems =
like=20
  might have been the problem last time but what do I adjust=20
  here)<BR><BR><BR>Other ideas or what am I missing? &nbsp;&nbsp;I read =
pilot=20
  bearings but were replaced so I doubt much wear. <BR><BR>Thanks,=20
  =
Mike<BR>_______________________________________________<BR><BR>Mgs@autox.=
team.net<BR>Donate:=20
  http://www.team.net/donate.html<BR>Suggested annual donation=20
  &nbsp;$12.75<BR>Archive: http://www.team.net/archive<BR>Forums:=20
  http://www.team.net/forums<BR>Unsubscribe:=20
  http://autox.team.net/mailman/options/mgs/mgbob@juno.com
  <P></P>
  <P>
  <HR>

  =
<P></P>_______________________________________________<BR><BR>Mgs@autox.t=
eam.net<BR>Donate:=20
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http://autox.team.net/mailman/options/mgs/paulhunt73@virginmedia.com<BR><=
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