I'm more confused. Jim, the picture you posted is similar but clearly different than the pictures Tim posted. It looks like the second (rear) ball and socket, and its mounting bracket, are missing. If that's the case, I don't see how it works at all. That is, if it still has torque-tube drive.
I agree with Ed and Jerry, there has to be a seal of some kind in that threaded collar.
Some more pictures will be helpful.
Last edited by Frank50; 09/21/2019 12:12 PM.