What I have done before is to make the hole in the arm smaller. I did
this by putting a socket on each side of the hole with all of it resting
firmly on the anvil area of a vise. Then I hit the top socket hard with
a hammer. This slightly flattens the casting in the area of the hole
making the hole smaller. The sockets need to be selected for best fit in
the recesses. Careful.

Mark

craig cowan wrote:
> I took a razor blade and cleaned out the splines of the shaft. As you guys
> had suggested, it was just filled with soft metal and the splines are pretty
> much okay..........As it stands it has enough tension to work, but clearly not tightly
> as I can move the wiper arm with relative ease once it's tightened down. It
> will work for now, but what can I do to get this nut tight?
>
> Should I try a stack of washers to use a different section of thread to hold
> the tension? (Stack of washers right under the nut).
>
> I put aluminum foil on the splines as well, hoping to hold things in place.
>
> -Craig
>
>
>