Tony,
That is correct.  You may get to the point that you have to "relieve" other
areas of the arm base so that the taper on the hole will fit tightly on the
shaft and not rest on the base of the arm. If in doubt, "paint" the bottom
area of the arm with a black permanant marker and reassemble.  Then,
dissasemble and look for where it contacts.  Remove whatever touches
anything other than the splines of the shaft.
You can usually get quite a few re-new's out of this method.
Sometimes it helps to wiggle the arm while tightening it to help cut the new
grooves into the aluminum.  Not too much wiggle, just enough to seat the
splines.

Mark

> Aha - ok so just replace the arm - cool.  I also
> understand one can pull the arm off - clean out loose
> bits of metal - and tighten down snug - this will cut
> new grooves in the wiper arm socket?
>
> Tony
>
> --- "Neal R. Hansen" <nhansen@dakotacom.net> wrote:
> > I had the same problem. I found that the spline in
> > the wiper arm goes bad. This is just soft Pot Metal
> > and chews up easily, whereas the wiper shaft is real
> > steel and the splines there don't.
> > Not a very expensive fix.
> >                                         Neal
> >
>
>
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