Message text written by "D. Michael Scott"
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I have received a lot of help from people on the list in the course of
rebuilding my '75 TR6 rear suspension. It is completed now and rode
extremely well today.
However, I may not be out of the woods yet - as I seem to have an
occasionally thump or sound from the left rear axle area perhaps?? The
car rides wonderful with the independent well-supported rear suspension,
and accelerates fine as well. Only, occasionally now and often around 40
MPH, I get an occasional thump off and on. This comes and goes, and is
not heard
when at 30, and when at around 55 MPH and higher I can not hear it.
I must admit replacing the right rear half axle in the exact former
position as
attached to the differential, but failed to do so for the left rear
suspension.
I was wondering if the half-axles are balanced as they meet the
differential, and must be returned to the exact position????
If so, could I just try shifting over one flange hole and trying to find
the correct balance position???
I understand that the universals must be placed in parallel on either
half-axle assembly to avoid thumping at high speeds, but does it matter
as to the relative position of each of the two half axles to one another
upon final assembly?????
Maybe I'm just obsessing, but many thanks, D. Michael
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Michael,
You can't index the flange by one hole as the holes are not at even
intervals. The only other position that will work is 180 degrees out from
its current position.
I seriously doubt the problem would be caused by this, however. If this is
a problem it would be persistant and come and go. The first thing to check
is tires. Rotate tires and see what happens. Next check your U-joints.
Then your differential mount bushings.
Is the thumping in sinc with the tire rotation or is it 3.7 times as fast?
If it is the later, disregard the above and check your drive shaft.
Good luck
Dave
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