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Re: [TR] TR6 Rear End Clunk

To: triumphs@autox.team.net
Subject: Re: [TR] TR6 Rear End Clunk
From: Dave1massey@cs.com
Date: Mon, 23 May 2011 18:07:48 -0400 (EDT)
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In a message dated 5/23/2011 4:50:02 PM Central Daylight Time, 
keithstewart@execulink.com writes: 
> A little help from TR6 owners please. I have a TR3 and a TR4 but lately 
> have been looking to purchase a TR6. I recently looked at one quite a 
> distance from where I live but have a concern about a clunk in the rear. When 
> both I and the owner drove it, there was a mild clunk coming from the rear 
> when engaging the clutch from a standstill and when I drove it, sometimes 
>when 
> shifting gears just before engaging the next gear. It seemed similar to 
> what I have experienced when one of my cars needed a new universal joint. The 
> owner indicated that he understood from other TR6 owners that "...that was 
> the way TR6s were". He tells me the universal joints and the differential 
> mounts were replaced . From what I have read, this might relate to worn 
> diff mounts that lead to cracks in the frame where they mount. Since the diff 
> mounts were replaced, it shouldn't be worn diff joints. What is the wisdom 
> of the list relative to this rear-end clunk?
> 

The other common source of clunk is sticky spline shafts.  Each half shaft 
has a spline arrangement to accommodate halfshaft length changes resulting 
from suspension travel.  If these spline couplings are not kept lubricated 
they tend to stick and when they finally do move they clunk.

That's an easy fix.  Cracked diff mounts are not.

Dave
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<HTML><FONT FACE=3Darial,helvetica><HTML><FONT  SIZE=3D2 PTSIZE=3D10 FAMILY=
=3D"SANSSERIF" FACE=3D"Arial" LANG=3D"0">In a message dated 5/23/2011 4:50:=
02 PM Central Daylight Time, keithstewart@execulink.com writes: <BR>
<BLOCKQUOTE TYPE=3DCITE style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEF=
T: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">A little help from TR6 owners=
 please. I have a TR3 and a TR4 but lately have been looking to purchase a =
TR6. I recently looked at one quite a distance from where I live but have a=
 concern about a clunk in the rear. When both I and the owner drove it, the=
re was a mild clunk coming from the rear when engaging the clutch from a st=
andstill and when I drove it, sometimes when shifting gears just before eng=
aging the next gear. It seemed similar to what I have experienced when one =
of my cars needed a new universal joint. The owner indicated that he unders=
tood from other TR6 owners that "...that was the way TR6s were". He tells m=
e the universal joints and the differential mounts were replaced . From wha=
t I have read, this might relate to worn diff mounts that lead to cracks in=
 the frame where they mount. Since the diff mounts were replaced, it should=
n't be worn diff joints. What is the wisdom of the list relative to this re=
ar-end clunk?<BR>
</BLOCKQUOTE><BR>
<BR>
The other common source of clunk is sticky spline shafts.&nbsp; Each half s=
haft has a spline arrangement to accommodate halfshaft length changes resul=
ting from suspension travel.&nbsp; If these spline couplings are not kept l=
ubricated they tend to stick and when they finally do move they clunk.<BR>
<BR>
That's an easy fix.&nbsp; Cracked diff mounts are not.<BR>
<BR>
Dave</FONT></HTML>
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