Alternator was replaced about a year ago so it's not old. Still looks shiny and clean. It stopped pumping amps yesterday while motoring up eleuthera. For the first time in my 3mo of the Bahamas I have 48hrs of solid cloud cover and I'm not sure my freezer full of mahi is going to make it (one of my 100w solar panels died a few days ago too...).
Checked the wiring and posts, looks good. Pulled the alternator hoping I could open it up but for the life of me I can't get it open and I started worrying if I break the rotor or case and it can't be bolted back in to hold my belt on then I'd be 100% dead in the water. I removed the screws (3) that hold the case together, the case seemed to twist a bit but would not split. I thought maybe the pulley wasn't allowing it to split (but I didn't see it bottoming out) but it's not an easy job without an impact, I also wasn't sure if it was a reverse thread or not.
I reinstalled the alternator and bingo everything worked again, 22a to my house bank. Shut down the engine to make dinner in peace, fired it up again and 0amps. I thought I would feel better, plus have done this to starters, and I smacked it with a wrench while running and boom 22a back again. Before I could even text my friend it went to 1.5a then 0 again.
I think a brush is stuck or dirty. Any other ideas? Anyone split one open? It's a 35a one. Not stock but same output same bolt pattern same everything far as I can tell.
NO I can't go to auto zone and get it tested no I can't go get it rebuilt or buy a new one right now. I'm staged to leave the bahamas at anchor and the lockdowns in place won't allow me on shore and no one is answering their phones here.
I wish it wasn't another 48hr of cloud lol. My remaining solar can keep me going without issue even in partly cloudy weather but this will be day 3 of no alternator and poor weather adding up to bad things.