wiper transmission woes and possible solution:

I'm suffering from a disconnect between the knurled/splined part that the arm mounts to and the shaft that's supposed to turn it. It looks like the splined mount was just staked onto the shaft and has come loose.

Has anyone ever had the misfortune to deal with this?
Do you thing drilling for a rollpin could be the answer?

I'd love to fix this thing for nothing as it's for someone else and they're finances are less stable than the Gov't right now.

There should be a "latch" of sorts on the wiper part, push in - pull out. If it's not there or broken...junkyard. I think drilling and roll pin would be overkill...but it'd likely work.

the splined part that the "latch" keeps the arm attached to is the part that has failed. It rotates freely on the pivot shaft that's attached to the linkage/transmission assembly.