Thanks, csnow, but was for different failure mode on a different type of wiper assembly.
Mine (W126) has a multiarmed transmission with several rotation points ... two of which are steel ball in plastic socket ... her is where it breaks ... the thumb sized plastic sockets crack at the lip area, allowing the steel ball to pop out ... plastic socket is not replaceable ... no other option but to expoxy it some for temporary fix and then replace THE ENTIRE ASSEMBLY! Opting for a used one at $100 is painful, particularly when the failure is due to a 10 cent plastic (should have been aluminum) socket ...
1991 350 SDL (200K and she ain't bent, yet)
former 2002 E320 4Matic Wagon - good car
former 1985 300 CD - great car
former 1981 300 TD - good car
former 1972 280 SEL - not so good car
a couple of those diesel Rabbits ...40-45 mpg