[Healeys] Steering box problem - update

[Alan Bromfield]

Team.
Many thanks for the offer of spares etc.

I investigated further today to try and identify the cause of the tight
spot.  I made up a steel strap to bolt across the top of the box so that I
could preload the drop shaft with the lid of the box off.  I discovered that
the tight spot is exactly in the centre of the worm  with engagement running
freely both before and after the tight spot.  That indicates to me that the
axis of the drop shaft and column are accurately perpendicular.

So why does the tight spot manifest itself halfway between straight ahead
and full right lock?  Since the Pitman arm has a blind spline that acts as a
keyway onto the drop shaft, it will only go onto the shaft one way.  I have
to assume therefore that the splines are machined out of register with the
peg angle of the drop shaft which swings everything off to the right.

I have today ordered one of Jeremy Welch's new constant clearance
worm/column assemblies (CSTG01) and will let you know how it performs when I
get it.

Best.
  _________________________________________
(______________ Alan Bromfield_______________)
        (_______\____1957-BN4____/________)
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