Hi Derick, Ryan and Kelly,
We have the same situation with our mizzen gearbox. The horizontal tube is seized; the outer sleeve, the nylon bushing and the inner tube coupling the gears to the winch handle female bit are all solidly stuck together.
Is there any advice on how to make them work freely again? Is the nylon bushing meant to be solidly coupled to either the outer sleeve or the inner tube?
Also, as a result of that seizure, I think the thread between the horizontal elements and the gearbox appears to have slipped. Any idea if that could be remediated in any way?
Thanks, Derick. That's great info, and matches the diagram I received from Amel (which I intend to upload to the files section when I get a chance). Do you have any idea how the rigger separated the pieces of the tube? Also, did you simply screw it back in, and it turns freely enough that it doesn't unscrew itself again?
Ryan and Kelly
SM 233 Iteration
Boston, MA, USA
I had the same problem on Brava. The piece in your picture had frozen up, and I needed to take it to a rigger. The rigger was able to remove the inner tube from the outer tube, and clean and regrease it so that then it turned freely. If you then disengage the gearbox from the mizzen foil, you can remove it and see how the piece you have pictured screws into the gearbox. There are only a few threads between the two pieces. While you have the gearbox out, you can grease it too.
SM2K #400 Brava
Currently on the hard in Antigua