I have yet to get complete resolution on thruster as I'm waiting for Amel to service the unit next week. Here's what I've discovered so far. First, I found that I blew a 10 amp automotive type fuse located in control box (thanks Alex). This happened when thruster went all the way up without stopping. After replacing that fuse, jack motor works fine. Why did this happen? The band holding the "UP" stop sensor broke free allowing sensor to move to a position which did not recognize motor had travelled too far. Also, as a result of excessive motor travel, rigging cables are out of adjustment. I'm assuming this but 20 hours of pounding seas may have loosened the rigging. What I still don't understand is how thruster could leak with pin in and two good outside foam gaskets. Could bad shaft seal be culprit? Not sure.
did read Gary Silver's excellent article on adjusting the bow thruster rigging. I now understand the interplay amongst the up/down sensors and rigging cables. If you adjust one, you must adjust the others. For the first cable adjustment, I've decided to take Bill R's advise and let Amel do the job. Hopefully I'll learn from watching.
Ben and Gayle
S/V La Bella Vita
Either the stop sensor is not working, or it is not aligned correctly.