[TR] Update on TR4A speedometer quitting

[Geo Hahn]

Dave -

That plan may work but sometimes excess oil inside the speedo head can
cause problems.  The bearing that the drag cup spins on is very fine and
the clearance between the magnet bar and drag cup is close -- both can
tolerate very little lubricant before they misbehave.

The binding may not even be in the area where the lube you spray will be
going.  In mine the binding that broke the cable twice was the shaft of the
trip odometer and the fix was to disassemble the odo and clean up the shaft
with some fine emery cloth, then lube (grease) in the little cup formed for
that purpose in the shaft.

Geo


On Mon, Apr 28, 2014 at 5:36 PM, Dave Connitt <dconnitt at fuse.net> wrote:

> After checking out my TR4A speedometer, I found that like the tachometer,
> the
> speedometer had locked up and broke the cable. I was ablet to free it up by
> dripping penetrating oil in the cable end and letting it soak. After about
> 5
> minutes of trying, I was able to free it up. I ran some brake cleaner in
> it to
> hopefully flush out the crap in there. I will pick up a can of WD40 (can't
> believe I don't have one) and put a few drops in the end before I install
> the
> new speedometer cable.
> Still working out the bugs..
> Dave Connitt
>
> ** triumphs at autox.team.net **
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/triumphs/ahwahneetr@gmail.com