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-   -   Bravo Input shaft O-rings (https://www.offshoreonly.com/forums/drives-lower-units/347909-bravo-input-shaft-o-rings.html)

Rhythm and Blues 06-25-2017 02:21 AM

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.

SB 06-25-2017 06:34 AM

The parts charts at mercruiserparts.com list sizes for most of the o-rings in the drives,

Genuine Mercury & Mercruiser parts. BRAVO ONE

BUP 06-25-2017 10:24 AM

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.

BUP 06-25-2017 10:38 AM

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

Rhythm and Blues 06-25-2017 11:38 AM

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..

F-2 Speedy 06-25-2017 12:05 PM

skim coat ? of what

BUP 06-25-2017 12:19 PM

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

Rhythm and Blues 06-25-2017 12:52 PM


Originally Posted by BUP (Post 4564431)
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?

Rhythm and Blues 06-25-2017 02:08 PM


Originally Posted by F-2 Speedy (Post 4564427)
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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