Are you sure the splines are gone??

the splines are hard metal (steel) the wiper arm socket it soft metal (pot?). The splines will be filled with the soft metal when the splines move and the arm doesn't. Its shears the metal off the arm socket. SO examine the splined shaft and dig around with a pick, awl, pin, and see if you can't chase the metal out of the splines.

And the threaded end, can you add another washer below the nut to move the nut away from stripped section? And try a new nut.
alistair

On 2011-09-19, at 11:25 AM, craig cowan wrote:

> On my project syncro,
> I found while driving the other day that the drivers side front windshield
> wiper was slipping on the shaft but not to badly. Today I investigated. I
> took the nut and lock washer off to find that there are no splines left on
> the shaft. Bummer. I figured I could just tighten up the nut and be good to
> go for a while at least right?
> Well in tightening the nut, I found the threads to be stripped..... it won't
> tighten at all.
> 
> As it stands I no longer have a drivers side windshield wiper. I presume
> this job requires removal of the dash right?
> I was hoping not to have to do that until winter. Can it be done without
> dash removal?
> How bad of an idea is it to JB weld the thing on there..... for now?
> 
> 
> -Craig