Carbon seal???

[Jsullynz]

I think my seal needs attention it always has a little water in it when i have finished on the water and it goes well on the plane around 80kph but it struggles a little to get on the plaine...just wondering how does one know if the engine is in correct alignment

 

[Matt Braley]

Sounds like you do have a seal problem. Taking a while to accelerate is cavitation. It is commonly caused by the carbon seal wearing. Here is a quick thing to do: Loosen the clamp at the rear of the accordian boot, move it forward a little(1/2" or so)and re-tighten the clamp. This will apply more pressure to where the seal meets the stainless ring on the drive shaft.

 

[LouDoo]

Matt, To be blunt, you're new avatar suks, I liked the old one much better.

Lou

 

[Jsullynz]

Thanks does the grease pressure in the accordion keep the pressure on the ring???

 

[Jsullynz]

does this photo mean by engine is out of alignment as you can see the stainless ring is not central to the carbon seal also the bellow is easy to push back apparemtly this should not be easy to do......

 

[Dr Honda]

the boot could be holding the seal off center. But that contributes to an air leak.

The only way to know if you are out of alignment is to pull the pump, and check it with an alignment tool.

 

[Jsullynz]

If i move the bellow forward to increase the pressure on seal cold that centralise the seal there is bugger all pressure on the sealing bearing

 

[Matt Braley]

OK Lou, I'll see what I can do. I'll fix it for know, but I have been thinking of a funnier solution.

 

[LouDoo]

See if you can find one with some eye candy, maybe I could loan you Sheridan NOT! :reddevil:

Lou

 

[Jsullynz]

If i move the bellow forward a few millimetres to increase pressure on the carbon does it matter that i am moving the bellow away from the fibreglass end of the boat cause at the moment the bellow is hard up against the boat

 

[Dr Honda]

If i move the bellow forward a few millimetres to increase pressure on the carbon does it matter that i am moving the bellow away from the fibreglass end of the boat cause at the moment the bellow is hard up against the boat

It doesn't matter... but put a zip tie behind it. That will keep it from slipping back.

 

[Jsullynz]

Thanks dr without your help I'd be stuffed

 

[Villeneuve27]

We did this very same thing to increase the pressure on the carbine ring, hopefully it lasts the year. Hasn't taken in any water since.

 

[Jsullynz]

We did this very same thing to increase the pressure on the carbine ring, hopefully it lasts the year. Hasn't taken in any water since.

I put Some grease in the pto grease nipple and it did move the shaft back a few mil i will stick a tie behind the accordion so that will increase the pressure so villeneuve did you notice a reduction in cavitation out of the hole

 

[joaquin12345]

I might have the same problem. When your saying move the accordian black part back does that mean toward the engine??

 

[Jsullynz]

yup just a wee bit but make sure your pto boot has grease in it it also keeps pressure on the carbon ring

 

[Villeneuve27]

Didn't notice a difference with cavitation, I'm not sure if the carbine ring would effect cavitation, at least I can't see how.

 

[Jsullynz]

When under acceleration it can seperate slightly or if there is crack or groove air can enter via that space and get into the pump causing cavitation