The passenger side wiper keeps stopping on the Passenger's side. The arm under the front cowl keeps falling off the splined shaft that connects it to the wiper arm. I have hammered it back on about 6 times, and it keeps falling off.
There is no way to thread it for a nut, or groove it for a C-clip, or even to shove a push nut on it. Is there some way to fix this thing without replacing the whole arm assy?