<VV> Steering Adjustment
hugo at aruncoaches.co.uk
Thu Mar 21 05:20:30 EDT 2019
Even a worn box will have a lot ore play at the edges than at straight
ahead. Try it - park the car with the wheels on partial lock & see how
much play you have!
On 2019-03-21 03:21, roboman91324 at aol.com wrote:
> Hugo and Jim,
> Thanks for the additional info.
> We may all be right.
> Pretty much by definition, the only time you would need to adjust the
> steering box is after it has become worn and that would occur in the
> center steering area for most cars. I have never worked on a new
> steering box but I suspect that a new system would exhibit the
> characteristics that Hugo describes. In addition, the steering box
> just seem to be looser when approaching the far right or left
> positions because the mechanical advantage of the Pitman arm is
> greatest there.
> I imagine it would make sense for steering box manufacturers to
> compensate for anticipated wear patterns by making things tighter in
> the center when new.
> A fair portion of my customer base has been in the machine tool
> trades. (Just one of many industries.) These machines use ball screws
> extensively. One customer had an issue with his aged Moore Jig
> Grinder. I determined that the ball screws were worn and had
> significant backlash when the table was in the center position. The
> customer didn't want to spend the money on a rebuild or suffer the
> down time so the temporary fix was to grind the parts with the table
> off center in both X and Y where the wear on the ball screws was
> minimal. All of the parts he was grinding were small enough so he
> could do this. The CNC was also aged and did not have the backlash
> compensation capability that newer controllers have. The customer was
> happy that I had found a zero cost way to fix the problem. Just
> another war story from the past.
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