Originally Posted by Peschi
I own a Beneteau
473, with which I d'like to sail around for some years. It is 12 years old and has a Volvo
TMD22 and a three blade NON-folding Propeller
At about 1400 RPM
and more, there starts a noisy vibration. It is not on the Engine
, more behind it. I already had a mechanican on the boat
, who aligned the engine new, so that the shaft can be turned easily by hand. But the vibration are still there.
The vibrations only occurs, if the prop is turning, so no vibration in neutral even at higher RPMs.
When I dive to the Prop, everything seems to be normal. The only thing I am not sure about
: it is normal that I can move the Prop and the Shaft under Water
a little bit... maybe 1-2 Milimeter. Should this be tighthen? There are two plasctic-screws right behind the Prop. What are these for?
Can anyone help me?
Thank you very much!
Yep been there got the T shirt this year and learned the hard way when I had vibration.
First thoughts were the Cutlass bearing,Removed and renewed Cutlass bearing -better but still vibration!
Then thought it must be the shaft, Fitted new shaft and another cutlass bearing - better but still some vibration at 1800 rpm
Changed 'all four' engine mounts and re aligned shaft again - problem solved