Originally Posted by JETTEST
I'm kind of in a panic about the potential scope
of this problem. Anyone else have similar?
E-32 with Yanmar 2GM20
installed ~15 years ago.
Hello Jettest... the same thing
happened to me a couple days ago -- and the solution wasn't killer co$tly! I was running down the Gulf coast ICW
when the engine revved, yet no forward momentum. Yes, I can see my shaft (great access to engine components) however though the shaft was spinning I wasn't moving.
I was hoping for a sheared keyway -- that's a small square chunk of stainless (or bronze) that holds the propeller
to the shaft so they spin together. It's a minor (so to speak) fix (remove prop, replace key, and put it all back together)
Anyway, I had a spare chunk of 5/16" square stainless and cut the appropriate length piece off from ship's stores so it was ready by the time the diver showed up. I wasn't that "lucky" -- it turned out the key that is in the coupler was both sheared (lenthwise!) and broken (vertically)
Yes, I managed to do both. (sigh) Probably why the shaft spun then stopped when in gear
-- the dual break thing. Argh.
However, it wasn't terribly expensive and I was up and running within 2 and a half hours (including consult, dive, loosen coupling, replace keyway, mount coupling, re-set PSS (shifted when sliding back coupling) -- and I wish now I'd bought a split coupling but...
Good luck -- I hope yours is not too costly. Having accessible engine components helps a great deal.