Hello readersI have a 2006 340DA...
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06-06-2022 05:43 PM
Hello readersI have a 2006 340DA Searay cruiser on which I must replace the 1.5" V- drive prop shaft and prop. Anyone know the current part number for the dripless shaft seal, or for a new internals for the seal? No markings that I can see, and searching under the Searay part number yields nada.
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06-08-2022 04:43 AM
https://www.tidesmarine.com/sureseal/sure_vs_strong#:~:text=The%20StrongSeal%20has%20a%20stainless,removable%20Cap%20and%20Split%20Washer.
There should already be a spare seal on the shaft in a seal carrier.
When I change my seals I discard the active seal, move the spare to active and put a new into the spare location.
When I remove / replace the shafts / seals on my boat I use a seal protector to ensure the keyway does not damage the seal.
https://live.staticflickr.com/65535/50029500446_79694b4984_z.jpg
Each time I install a new seal I slightly shift the dripless seal carrier so it rides at a different place on the shaft, marking the hull tube so I know the locations used.
When I remove the shafts I use a step ladder to support the detached shaft for polishing. I use strips of sandpaper and a random back / forth and up / down movement to remove marks, such as from the prior shaft seal placement.
Also, long ago I used coarse / medium / fine lapping compound on the props and couplers, also cross lapping, to change from an original horrible contact pattern to a uniform contact, along w/ "impossible" to remove to now normal removal effort.
https://live.staticflickr.com/4654/40507538381_b0a121e3d3_c.jpg
https://live.staticflickr.com/4648/40507538291_b2ee90f6bb_c.jpg
https://live.staticflickr.com/4675/40465168122_4aaf8dffd9_c.jpg
Note that if the dripless seal carriers are replaced, the original parts had just a single port. When I changed mine I used parts w/ dual ports, with a crossover hose, so now I can safely operate, even with one engine disabled.
Don't forget to include an annual check on the dripless seal carrier. With the hose removed and the port blocked verify normal / sufficient water flow provided by the idling engine. With the engine off and the port unblocked verify unimpeded raw water intrusion backwards through the seal.
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06-08-2022 02:58 PM
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06-11-2022 07:07 PM
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06-12-2022 03:33 AM
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06-12-2022 06:56 AM
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06-12-2022 07:24 AM
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06-12-2022 07:35 AM
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06-20-2022 10:40 AM
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06-20-2022 12:35 PM
In the unlikely event that the boat should ever come to rest on the sea floor bottom, then the insurance company will hire an investigator to determine the root cause(s) for the failure.
If there is a way the insurance company can pinpoint the loss cause to an unapproved owner modification so they won't have to pay, and the tee w/ valve contributed to the loss then that will adversely affect the owner recouping for the damage / loss.
A properly installed UL approved dual port dripless seal does not have that insurance coverage risk.
FWIW, my boat is maintained, modified and upgraded to be fully compliant w/ all applicable standards.
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06-20-2022 02:03 PM
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06-20-2022 05:49 PM
I want to make sure the marina is aware of this. My initial thought was ABYC and NMMA standards would be more applicable in this area.
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06-20-2022 06:07 PM
https://www.tidesmarine.com/pdf/ABS/TidesFSK-ABS.pdf
Other parts I've purchased, such as seacocks have a UL label attached.
My guess is the MFG will select an appropriate agency to perform testing to the applicable standard and provide the certificate, like has been linked here.