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Bravo Input shaft O-rings

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Old 06-25-2017, 02:21 AM
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Default Bravo Input shaft O-rings

Could someone please provide the part numbers and dimensions of the 3 o-rings on a bravo input shaft? Thanks.
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Old 06-25-2017, 06:34 AM
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The parts charts at mercruiserparts.com list sizes for most of the o-rings in the drives,

Genuine Mercury & Mercruiser parts. BRAVO ONE
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Old 06-25-2017, 10:24 AM
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first making sure on the same page here as you - are you asking for O rings for when you re install the complete outdrive ?

If so, just buy the Bravo installation kit it comes with those O rings you are asking for and you do know you have to change the o rings gaskets on the bell housing to, when the drive is pulled ? the kit comes with all of that end to and is cheap in price - I have a ton of them.

going off the top of my head Merc part number 16755Q1 hopefully I got it correct the part number.

Last edited by BUP; 06-25-2017 at 10:35 AM.
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Old 06-25-2017, 10:38 AM
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just a pic for reference

this O rings for the bravo input shaft ?

http://coastalrides.co.uk/new-genuin...uj-input-shaft

Have to ask why do you need the sizes of the O rings - Merc has the kit to buy with everything you need to reinstall the drive. There is more than 3 orings
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Old 06-25-2017, 11:38 AM
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Thanks fellas, I have the kits; just wanted to verify the sizes w my mic. Appreciate the help.
While we're on the subject; Perfect Seal is what most people are using for the o-rings and do I want to do a very thin skim coat on the whole mating surface? I dont like the non definitive results I've been reading..
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Old 06-25-2017, 12:05 PM
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skim coat ? of what
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Old 06-25-2017, 12:19 PM
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clean surface on the bell housing for the O ring gaskets then bellows adhesive to hold them in place ( back side of Oring only)

. O rings on the input Yoke shaft you grease them and Merc Extreme grease on those splines but not on the tip. Just full length of splines with the grease
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Old 06-25-2017, 12:52 PM
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Originally Posted by BUP
clean surface on the bell housing for the O ring gaskets then bellows adhesive to hold them in place ( back side of Oring only)

. O rings on the input Yoke shaft you grease them and Merc Extreme grease on those splines but not on the tip. Just full length of splines with the grease
gotcha. I knew about the grease but I'm glad you suggested the bellows adhesive; wasnt sure there. Out of curiosity what is the ideal application for Perfect Seal?
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Old 06-25-2017, 02:08 PM
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Originally Posted by F-2 Speedy
skim coat ? of what
I was talking about the Perfect Seal but since I'm not using it then I guess its a mute point.
I've got bigger issues now anyway...
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