Posted by Lorman, Alvin J. (ajlorman@…>)
Fargo:
I did not run the engine after burping it, so the problem may be solved.
Best,
Al
-----Original Message-----From: freedomyachts2003@yahoogroups.com [mailto:freedomyachts2003@yahoogroups.com] On Behalf Of Fargo RousseauSent: Tuesday, November 21, 2006 5:19 PMTo: freedomyachts2003@yahoogroups.comSubject: RE: [freedomyachts2003] Re: Fine Dust Around Syntron Shaft Seal
Al:Sorry to hear you still have dust from a wet seal. How long did you run the shaft with water flowing through. If it continues to “dust” then the seal is getting chewed up…or so I think. Is the shaft centered in the seal? Are you operating in very dirty, sandy water? Re: T into exhaust warning… sounds possible…siphons are strange and sometimes a bit unpreditable. Also, boats can jump around alot and surge water up the lines. Good luck. How you can save your Syntron.Fargo"Lorman, Alvin J." <ajlorman@yahoo.com> wrote:
Instructions for another brand of dripless seal says NOT to T into the exhaust water li ne because of the risk of backflow flooding the engine. They recommend the seawater intake.
I successfully removed the little fitting on the seal this weekend and water flowed out, so it does not appear that the seal was water-starved. Still no idea what is causing the dust.
Al
-----Original Message-----From: freedomyachts2003@yahoogroups.com [mailto:freedomyachts2003@yahoogroups.com] On Behalf Of Fargo RousseauSent: Tuesday, November 21, 2006 11:12 AMTo: freedomyachts2003@yahoogroups.comSubject: Re: [freedomyachts2003] Re: Fine Dust Around Syntron Shaft Seal
I thought of the “output” line as a source of cooling water for the seal, but didn’t like the added heat. So, I found that Teeing from the input line going into the sea water strainer worked wonderfully. After cleaning out the grease…or some of the blocking grease… trapped inside the seal by reverse flushing with an aqueous grease solvent, we had good flow of seawater flow through the seal (I used a clear vinyl hose so I could see the flow). The seal stayed cold and ran very well during hundreds of hours of motoring back from Florida to Connecticut.I believe these seals would last the life of the boat if they were not greased and kept cool by flowing water. They are designed to run for years (read Tens of thousands of hours) in industrial applications. Granted the Yanmar moves around quit a bit and loads the seals in ways that may be at the extreme design limit…but Syntron can be a great seal. I hate to hear abo ut hot running seals and black dust producing seals. That tells me that they are running dry, without the film of water they need and without the cooling affect they require.FargoF30 #12But soon an ex-Freedom owner… at least for a while… This group found a new owner for us… Rick and Jayne Higgins who sail out of Oriental, NC. They already love our pristine NARISA almost as much as we do. Bernard <lousleech@yahoo.com> wrote:
You can tee out of the exhaust line aft of the heat exchanger and there is pressure to pump the water thru the Syntron seal. That’s how it’s done on Lagoon Catamarans.BernardFreedom 36 “Simple Pleasures”— In freedomyachts2003@yahoogroups.com, “Lorman, Alvin J.” <ajlorman@…> wrote:>> Fargo:> > I will try the water line before I replace the unit, although getting> the threaded fitting out will be a challenge.> > Marc, hope you’re feeling better.> > Al> -----Original Message-----> From: freedomyachts2003@yahoogroups.com> [mailto:freedomyachts2003@yahoogroups.com] On Behalf Of Fargo Rousseau> Sent: Wednesday, November 15, 2006 8:05 PM> To: freedomyachts2003@yahoogroups.com> Subject: Re: [freedomyachts2003] Fine Dust Around Syntron Shaft Seal> > > > All grammer and spelling excused… I am so pleased with my F30> Syntron mod…that I will promote the idea one more time. You will find> two 1/8 in. pipe treaded holes in the brass/bronze part of the seal.> One may have a grease fitting…and the other a plug. If you remove the> fitting closest to your water intake line, and insert a 1/8 in. barbed> fitting, it is easy to attach a hose to the water inlet side of your> salt water intake filter. There is a slight vacuum in this line…which> will pull water through the Syntron…and cool and lubricate the seal> just as it was meant to be cooled and lubed… We traveled 3,000> miles with this mod…and never a moment of heat or dust. > > Belts are another matter… Still working on that issue on the 2GM20F> > Fargo > F30#12> > macks011 <macks04@…> wrote: > > Please excuse the grammer and spelling,I’m 6hrs post surgery and> the > morphine is great.> > I had an off line convo with Al regarding the PSS seal and> related to > to him my experiences with the low speed seal running dry after> thethe > preseason burping. Due to severe waking or a heavy following> sea, the > shaft log would be exposed, draining the log and causing an air> lock > and preventing cooling water from entering the seal. It occurs> to me > that a dry, overheating Syntron would emit the fine dust> witnessed by > several members.> > > > > _____ > > Sponsored Link> > Mortgage rates near 39yr lows. $420,000 Mortgage for $1,399/mo → Calculate new house payment> http://www.lowermybills.com/lre/index.jsp?sourceid=lmb-9132-16414&moid= 4116> > > > > IRS CIRCULAR 230 NOTICE. Any advice expressed above as to tax matters was neither written nor intended by the sender or Mayer, Brown, Rowe & Maw LLP to be used and cannot be used by any taxpayer for the purpose of avoiding tax penalties that may be imposed under U.S. tax law. If any person uses or refers to any such tax advice in promoting, marketing or recommending a partnership or other entity, investment plan or arrangement to any taxpayer, then (i) the advice was written to support the promotion or marketing (by a person other than Mayer, Brown, Rowe & Maw LLP) of that transaction or matter, and (ii) such taxpayers should seek advice based on the taxpayers particular circumstances from an independent tax advisor.> > This email and any files transmitted with it are intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. If you are not the named addressee you should not disseminate, distribute or copy this e-mail.>
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