Could be three things, put in order of $ to fix.... 1. A bad u-joint.
2 A worn spline on wire wheels. or 3. a problem in the differential
mounting. On my TR I've had 1 & 3.
First off you need to get the rear end of the car up where you can
safely crawl underneath. Check the u-joints by grabbing each side and
twisting. Check the splines in the same manner, only this time hold
the axle and twist the wheel. For 1 & 2, a small amount of play can
cause the "clunk".
Next look at the differential mounts. Check for wear or looseness in
the bushings. Sometimes a small floor jack supporting the differential
can help here. If all looks OK, check the mounts. Sometimes you can
see the crack, othertimes you can see it move when you shimmy the
differential a little.
While 1 & 2 can be fixed by replacing parts, #3 is a major pain. Hope
you know a good welder!
John D in San Diego
'67 TR4-A IRS
'71 Volvo P1800E
-----Original Message-----
From: tom_winslow <tom_winslow@email.msn.com>
To: TRlist <triumphs@autox.team.net>
Date: Sunday, July 30, 2000 9:08 AM
Subject: 1966 TR4A IRS 'Clunk' Coming From The Drive-Train (also Drop
in emails)
>
>Over the last few months I have noticed a noise emanating from the
area of
>the left rear of my TR4A. It sounds like a not-so-very-loud but solid
clunk.
>It (sometimes but not always) happens when I either change directions
or
>turn sharply. I have checked the wheels and there is very, very
little play
>there.
>
>I will be putting the TR4A in the shop this week for routine
maintenance and
>need to tell my mechanic exactly what to look for. Unfortunately, I
am not
>in a position to tackle these things myself - wish I could.
>
>I hope that I am not developing a problem with my IRS.
>
>Any comments appreciated.
>
>BTW, just thought that I would help out the 'Has anyone noticed a
drastic
>drop in incoming emails from the TR list ?' situation. I am mostly a
lurker
>but I am always here.
>
>tw
>--
>Thomas P. Winslow
>189 Hicks Creek Road
>Troutman, NC 28166
>email:tom_winslow@msn.com
>http://www.iredell.com/triumph.html
>
>
>
>
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