A regular zinc donut works well as a retainer, no need for fancy. It also provides insurance against the shaft sliding out backwards if the coupler and everything else lets go.
Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On 4 June 2017 at 03:22, Josh Muckley via CnC-List <cnc-list@cnc-list.com> wrote: > The requisite compression is that which eliminates leakage. If your > engine mounts are soft, the prop thrust can push the engine forward and > spread the bellows and collar causing a leak...While in forward. The > conventional wisdom is that the shaft should have dimples drilled for the > grub screws. I don't like doing that since everytime I adjust the collar I > put new drill dimples in the shaft. > > McMaster Carr has SS shaft collars which are relatively easy to install. > These are used and recommended a a redundant holding device. They could > also be used to hold the collar until the grub screws were set. > > As I recall PYI also suggests using a sharpie to mark the decompressed and > compressed collar position. They also suggest that the bellows will need > replaced every 5 years. I'm on my 6th season and I have no idea how many > the PO had had. There is no indication of the rubber degrading, no cracks > and still resilient. I've never had to readjust the compression and I > don't release it during the winter... Then again I don't haul out but once > a year for only 1 week. I'll soon be considering the dripless shaft seal > by sailorsams.com > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > > > On Jun 3, 2017 10:33 PM, "Eric Frank via CnC-List" <cnc-list@cnc-list.com> > wrote: > >> For winterizing the PYI shaft seal on Cat's Paw, it was recommended that >> I loosen the SS collar on the prop shaft so the rubber bellows is not >> compressed. I'm now trying to compress the bellows again before launching >> - PYI recommends compressing it about 3/4 inch. It's difficult to compress >> the bellows and tighten the set screws at the same time, given the limited >> access to that area (under bilge and exhaust hoses). Any suggestions for >> holding the bellows compressed temporarily while I tighten the set screws? >> >> Eric Frank >> Cat’s Paw, C&C 35 MkII >> Mattapoisett, MA >> >> >> _______________________________________________ >> >> This list is supported by the generous donations of our members. If you >> wish to make a contribution to offset our costs, please go to: >> https://www.paypal.me/stumurray >> >> All Contributions are greatly appreciated! >> > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > >
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