Tim We had exactly the same symptoms on our 3GM and the fix was as Graham described. Our trans was OEM made by a Kansaki (Yanmar subsidiary) and they stopped making our model some time ago. The newer versions may fit the bell housing but have different overall dimensions so your only real alternative is a rebuild. Parts are only available through Yanmar or their direct distributor, Mack Boring in New Jersey. Mack can do the rebuild but are normally backlogged. We wound up having Brewer's at Saybrook Point do it as they are the transmission repair site for the entire Brewer's franchise and are local to our area. Did a great job with as promised delivery. Biggest hang up was getting the cone and matching gears and they are expensive. Total bill about $1500 and I did the removal and reinstallation of the tranny.
Hope this helps John and Maryann Legacy III 1982 C&C 34 Noank, CT -----Original Message----- From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Graham Collins Sent: Wednesday, August 22, 2012 8:24 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List Transmission or Prop Issue? Clutch cone? I had similar issues when I bought my boat, but not identical - when in gear it would slowly engage, once engaged it would stay engaged. Reverse was fine. Had to get the cones lapped, the surfaces were seriously glazed. Which meant pulling the transmission for an overhaul... Note, pulling the tranny wasn't a big task, took an hour or two and the same on re-installation. I did that part, a friend overhauled it for me. Graham Collins Secret Plans C&C 35-III #11 Tim Goodyear wrote: > The last time out I noticed some strange behaviour when motoring. > Basically, I got very little drive from the prop until I increased > revs pretty substantially (around 2000rpm) and then it 'caught' and I > got normal speed from the revs, and am able to throttle up or down > appropriately. If I brought the throttle to idle (in gear) at speed, > I would have to do the same thing to get it to 'catch' again. I > didn't have time to do more diagnosis at the end of the trip, but will > do so when I head to the boat this evening pre-race. Reverse worked > fine backing out of the slip. > I'm thinking either its a transmission problem, or the propellor > (2-blade flex-o-fold) isn't opening when it should. I'm going to > check the shaft speed in-gear at the dock, which should tell me which. > If it turns out to be propellor, then I'll live with it until the end > of the season; if it's the transmission, does anyone have ideas about > where to go next? Gear oil was changed at the beginning of this > season, so that shouldn't be the issue, but I'll check levels etc. > The engine is a Yanmar 3GMF. > Thanks, > Tim > Mojito > C&C 35-3 > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
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