If the shaft is spinning and it is in neutral then the cone is not engaged and is not wearing.
Joel On Wed, Jun 8, 2016 at 1:18 PM, Richard N. Bush via CnC-List < [email protected]> wrote: > I thought I was following all this but now I'm confused; in regards to the > Kanzaki, (which I have), if the Yanmar instruction is to have the gear in > neutral; isn't that allowing the shaft to spin and cause the very problem > Rick points out? > (I have left the emails below which include the Yanmar Bulletin and Rick's > explanation to allow reference); help me out here! and thanks to all > > Richard > 1985 C&C 37 CB: Ohio River, Mile 584.4; > > Richard N. Bush > 2950 Breckenridge Lane, Suite Nine > Louisville, Kentucky 40220-1462 > 502-584-7255 > > > -----Original Message----- > From: Rick Brass via CnC-List <[email protected]> > To: cnc-list <[email protected]> > Cc: Rick Brass <[email protected]> > Sent: Wed, Jun 8, 2016 1:10 pm > Subject: Re: Stus-List Kanzaki Transmission in forward or reverse while > sailing? > > The point is that the engine and any gears in the transmission are not > turning, but the prop shaft will be rotating in the forward direction. So > the clutch plate that transmits power to the prop shaft will be turning, > with very light pressure between the drive plate and the clutch surface > (which, IIRC, on a Kanzaki is a double ended cone?). That leads to glazing > of the drive and driven plates, rapid clutch wear, and premature > transmission rebuild. > > *From:* CnC-List [mailto:[email protected] > <[email protected]?>] *On Behalf Of *Gary Russell via CnC-List > *Sent:* Wednesday, June 08, 2016 11:49 AM > *To:* C&C List <[email protected]> > *Cc:* Gary Russell <[email protected]> > *Subject:* Re: Stus-List Kanzaki Transmission in forward or reverse while > sailing? > > How can a transmission in reverse (gears not turning) cause wear? I'm > dumb-founded. > Gary > S/V Kaylarah > > ~~~~~~~_/)~~~~~~ > > On Wed, Jun 8, 2016 at 10:17 AM, Joel Aronson via CnC-List < > [email protected]> wrote: > > Advisory Number: MSA08-003: > > DATE February 8, 2008 Dealers and OEMs > TO: All Marine Distributors > SUBJECT: Gear in Neutral While Sailing All MODELS: > > All Sailboat Engines > > We continue to get questions regarding the correct gear position while > sailing with the engine OFF. This advisory is issued as a reminder; Yanmar > requires that if sailing with the engine OFF (not running) the transmission > shifter must be in the neutral position or internal damage to the gear or > sail-drive will result. This damage will not be covered by Yanmar's Limited > Warranty. Please instruct customers and dealers who deliver the sailboat to > the customer, of the correct (Neutral) position for the marine gear while > sailing. > > If the customer desires that the propeller shaft not spin while sailing, > either a folding propeller, shaft break, or other suitable device may be > used. However, Yanmar accepts no responsibility for the selection, > installation, or operation of such devices. Please also refer to Marine > service advisory "MSA07-001_Yanmar Sail Drive Propeller Selection" for > additional information. > > If you have any questions regarding this advisory please contact a > Customer Support representative." > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! > > -- Joel 301 541 8551
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