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Old 04-08-2008, 23:37   #1
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Mercruiser Bravo 3 Problem! Suggestions??

The boat is a bayliner 32 with twin Bravo 3 Mercruiser diesels with counter rotating props.
Does anyone ever had a broken Pignon Wheel (the crown on top of the drive shaft going into the tail, there where it goes down in a 90 degree angle)??
After a strange nocking sound we opened up the shaft to find out that the teeth of the wheel had been broken over a 3 inch distance.
What could have caused this failure? Does anyone had this before to? What needs to be done to prevent it from happening again??
There is a small damage on the prop but I can ahrdly imagine that hitting something would have caused it to break. The damage on the prop would have been much bigger i would think.
Any suggestions??
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Old 05-08-2008, 04:10   #2
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Iíve read reports that the twin-propeller Bravo III seem prone to corrosion damage.
Not familiar with the term "Pignon Wheel".
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Old 05-08-2008, 12:30   #3
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French Pronunciation of pinion

minion-mignon
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Old 05-08-2008, 12:42   #4
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The boat is a bayliner 32
A Bayliner? I hope you don't take it out in the Ocean. Now there is a production boat everyone can laugh at.
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Old 05-08-2008, 14:22   #5
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Pinion gear. The outdrive is by Mercury, and jzk's Bayliner slur is out of place here.
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Old 05-08-2008, 16:46   #6
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And this served what purpose?

Iffn ya cants offers nuffin keeps yer opignons to yo' own sef

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A Bayliner? I hope you don't take it out in the Ocean. Now there is a production boat everyone can laugh at.
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Old 05-08-2008, 17:44   #7
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I was kind of an inside joke after the comments that Alondra was making towards Beneteaus and Bavarias on another thread.

We have a couple gas Merc 350s with Bravo III drives on a Monterey 298ss, and have not had a problem. How many hours on yours?
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Old 05-08-2008, 18:22   #8
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Oh OK>>>>>

Didn't realize this was a cross thread (I hate it when that happens!!!)
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