Squeal sound

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Originally Posted by haknslash

So I just need to loosen the clamps holding the seal to the shaft and then run some grease on the inside of it with my fingers? Anyone got a video link so I can understand better what I need to do to see if this is the culprit? You would think the dealer techs would do this if they know it needs to be lubricated.

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No need to take anything apart. Just remove the v-drive cover and you can see the shaft going into the seal. Just rub grease on the outside rubber and have someone turn the prop as you apply. Some should work into the rubber seal this way. Pumping grease in the seal would just spray out into the lake as the cooling water was pumped into the inside of the seal.

You are only trying to add moisture to the rubber. Not lubricate a joint or shaft.

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Originally Posted by RUGER761

Are you only hearing the sound at idle in forward or does it do it in reverse as well? If its not your seal making the noise, it could also be your prop. If you hit the prop on a stick or something in the water, it might be just slightly out of shape, which sometimes causes the prop to make a noise at idle or slightly above idle, somewhat technical name called "prop singing". Kind of has more of a harmonic type of sound. Goes away with more RPM and wont generally do it in reverse.

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I can’t recall if I tested for the sound in reverse. It was only at idle speeds in forward from what I could remember and the dealer did mention prop sing. I checked the prop for any damage or edges looking rough and everything looked fine.

I’m aware of the “growl” sound like when coming off plane quickly and you can sometimes hear the prop growl for the lack of a better description but was told that is totally normal and I’ve heard that on other boats I’ve been on.

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Originally Posted by Holdmybeer

No need to take anything apart. Just remove the v-drive cover and you can see the shaft going into the seal. Just rub grease on the outside rubber and have someone turn the prop as you apply. Some should work into the rubber seal this way. Pumping grease in the seal would just spray out into the lake as the cooling water was pumped into the inside of the seal.

You are only trying to add moisture to the rubber. Not lubricate a joint or shaft.

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Gotcha. I’ll try and dig into this more once I’m at the dealer. Maybe I can grease it while I’m there.

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Originally Posted by haknslash

I can’t recall if I tested for the sound in reverse. It was only at idle speeds in forward from what I could remember and the dealer did mention prop sing. I checked the prop for any damage or edges looking rough and everything looked fine.

I’m aware of the “growl” sound like when coming off plane quickly and you can sometimes hear the prop growl for the lack of a better description but was told that is totally normal and I’ve heard that on other boats I’ve been on.

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Check the prop for decolorization in spots almost a blueing color or a color that makes it look like it got hot. Generally a singing prop wont have damage that you can see or really feel (as long as its not sever), would have to be measured to find the issue. But if that's what it is, wont hurt one bit to run it as is, just sounds weird at idle. But for sure check the shaft seal with the steps the others have mentioned as well.

Is there a recommended grease that won’t have any adverse effects on the rubber? I don’t want to create a bigger problem down the road with deterioration. I spoke with one of the dealer techs today and he said what I’m hearing is a normal trait with some vdrive a and assured me everything looked good and the boat performs as it should. It’s just a sound I may have to get used to if it comes and goes and he reiterated the harmonics and noises that come with these types of drive systems. I will be sure to inspect for any blueing on the shaft.

The outside looked fine…

https://i.imgur.com/tsclJ4W.jpg

https://i.imgur.com/DMug42O.jpg

Any marine grease would be fine. The seal is similar to a wheel bearing seal. Anything that will work with viton will safice.

You have zero bluing or wear marks. If you crawl under and view where the shaft come thru the hull, is there anything in the hole? A piece of wood or plastic that could be lodged and rubbing the shaft.
Harmonics are real but what is wearing to cause it this year and not last?

This brings up the question, for winter lay-ups, should we be greasing the inner seal, and maybe the outer seal to prevent seal failure?

I’ve never heard it mentioned or given it a thought until Hack’s issue.


2022 SA 450

I'm going to start. I changed to the Glide system since mine failed.

Well we took the boat out all day and no strange sounds. Maybe it was just a freak occurrence. Boat ran and sounded great all day.

The shaft seal is water cooled right? Where does it’s water get fed from? Maybe I had some debris clogging it for a little bit? Idk. Just glad it’s not doing it and we had a great Father’s Day on the water.

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Originally Posted by haknslash

Well we took the boat out all day and no strange sounds. Maybe it was just a freak occurrence. Boat ran and sounded great all day.

The shaft seal is water cooled right? Where does it’s water get fed from? Maybe I had some debris clogging it for a little bit? Idk. Just glad it’s not doing it and we had a great Father’s Day on the water.

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They greased it at the shop and didn't tell ya. [emoji3]

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