PSS shaft seal leakage
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B Whitehurst
May 31, 2025, 4:39:10 PMMay 31
to J28 Sailors
Do any other J-28 owners happen to have a PSS dripless shaft seal? It has been a very nice feature on this boat for the 4 years I’ve had the boat, but it is now leaking quite a bit, dribbling a stream, not a spray or drip, when in gear. There’s no leakage at all when stationary. I can see the stream of water coming back under the engine when in gear, but inspecting from the side, there’s no slinging or spraying, that I’d expect if the leak was at the carbon face seal. If others have been here before what was the diagnosis? I always try to understand what I’m facing, before either tackling a DIY or handing it to a yard to empty my bank account.
Brad Whitehurst
J-28 Ardea (ex. Compass Rose)
Brad Whitehurst
J-28 Ardea (ex. Compass Rose)
Jason Smith
May 31, 2025, 6:18:05 PMMay 31
to j28sa...@googlegroups.com, Sailors J28
Couple thoughts:
1. Burp the bellows to flush any debris between rotor and bellows
2. More likely the bellows resistance to compression weakens over time. One possible solution is to remove set screws, turn the collar 1/16 of turn (to expose new shaft), and compress the bellows a bit further. Use new set screws and add backup set screws on top.
3. It may be time for another bellows replacement.
Jason
> On May 31, 2025, at 4:39 PM, B Whitehurst <windrif...@gmail.com> wrote:
> Do any other J-28 owners happen to have a PSS dripless shaft seal? It has been a very nice feature on this boat for the 4 years I’ve had the boat, but it is now leaking quite a bit, dribbling a stream, not a spray or drip, when in gear. There’s no leakage at all when stationary. I can see the stream of water coming back under the engine when in gear, but inspecting from the side, there’s no slinging or spraying, that I’d expect if the leak was at the carbon face seal. If others have been here before what was the diagnosis? I always try to understand what I’m facing, before either tackling a DIY or handing it to a yard to empty my bank account.
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1. Burp the bellows to flush any debris between rotor and bellows
2. More likely the bellows resistance to compression weakens over time. One possible solution is to remove set screws, turn the collar 1/16 of turn (to expose new shaft), and compress the bellows a bit further. Use new set screws and add backup set screws on top.
3. It may be time for another bellows replacement.
Jason
> On May 31, 2025, at 4:39 PM, B Whitehurst <windrif...@gmail.com> wrote:
> Do any other J-28 owners happen to have a PSS dripless shaft seal? It has been a very nice feature on this boat for the 4 years I’ve had the boat, but it is now leaking quite a bit, dribbling a stream, not a spray or drip, when in gear. There’s no leakage at all when stationary. I can see the stream of water coming back under the engine when in gear, but inspecting from the side, there’s no slinging or spraying, that I’d expect if the leak was at the carbon face seal. If others have been here before what was the diagnosis? I always try to understand what I’m facing, before either tackling a DIY or handing it to a yard to empty my bank account.
>
> Brad Whitehurst
> J-28 Ardea (ex. Compass Rose)
>
> --
> Brad Whitehurst
> J-28 Ardea (ex. Compass Rose)
>
> You received this message because you are subscribed to the Google Groups "J28 Sailors" group.
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Robert Whitehurst
May 31, 2025, 6:23:11 PMMay 31
to j28sa...@googlegroups.com
Jason,
Good idea on the compression. Do you recall when that bellow was installed? PSS says 5 years nominally for replacement. I haven’t gone thru all the records yet.
Brad
To view this discussion visit https://groups.google.com/d/msgid/j28sailors/E354C5BD-A7A3-4F9A-A980-2068FDFE7F9C%40gmail.com.
Jason Smith
May 31, 2025, 11:15:40 PMMay 31
to j28sa...@googlegroups.com
Brad,
The bellows dates to April 2017. It was the first replacement after the initial install in 2009. So it is likely due.
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Should be 1” shaft and 1 3/4” log as I recall.
Jason
To view this discussion visit https://groups.google.com/d/msgid/j28sailors/CAMkHY82h79g6SKo2BU_7vYtJgatsu9Hi5eD1B4oAYvufkWSoEQ%40mail.gmail.com.
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