[TR] TR3 Steering wheel shimmy

[tom white]

This is what I just eliminated in my 1960 TR3A.  I took it to the root of the
problem.  In my case that was run out in the wheels.  Here is the list:

1.  Check run out on front all wheels with a dial indicator.

2.  Remove front hubs and have the mounting surface trued at a machine shop.

2.5  Inspect bolt holes and mounting surface of wheels and remove any burrs,
rust, or foreign matter.

3.  Recheck front wheel run out marking the wheel with the amount at every
change in needle direction.

4.  Using a pneumatic sander grind the mounting surface of the wheel at the
high points of run out marked on the rim.  Do not get too aggressive with the
grinding.

5.  Recheck run out again.

6.  Repeat grinding and rechecks of run out until an acceptable amount of run
out is reached.

7.  Repeat the above processes on the rear wheels.

8.  Acceptable run out for me was 0.025.

My car now steers like a Cadillac.

Best regards,
Tom

> From: eoot at citlink.net
> To: triumphs at autox.team.net
> Date: Sun, 20 Apr 2008 10:04:21 -0400
> Subject: [TR] TR3 Steering wheel shimmy
>
> Morning all,
>
> Looking for a diagnostic list to determine the cause of a steering wheel
> shimmy. It occurs at around 40 and I believe diminishes a bit above 60. I
only
> feel/see it in the wheel. I do not feel it in "seat of the pants" or rest
of
> the car. I have rotated tires, front to back, which had no effect. I did
> replace front wheel bearings this spring. With the car jacked and hands on
> wheel at 6 and 12 there is no movement. The toe in does seem off a bit.
>
> TIA
> Ed
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