Bravo 3 slipping into gear (cone clutch)

Discussion in 'Gas Engines/Drives/Transmissions/Props' started by OllieC, Jul 11, 2020.

  1. OllieC

    OllieC Well-Known Member SILVER Sponsor

    Mar 11, 2013
    MinniSoCold
    Sara Belle
    2005 Weekender 215
    Mercruiser 5.0 mpi, Bravo III
    I seem to be having an issue with the top end of the Bravo 3. After doing some research it sounds like it could be the cone clutch. I can be in gear at idle, however when I increase the throttle it hesitates then slams into gear, even though it’s already in drive. Reverse seems to be fine.

    My question is, if I replace the cone clutch, will the gears have to be replaced as well? Looking at a complete gear, clutch and linkage assembly puts me in the $1,500-$2,100 range if I want to replace or upgrade from a standard Bravo 3.

    Also, I’m still driving it. Will this be catastrophic if I continue using the boat or will it slip until it no longer goes into drive? I have been nursing it so it doesn’t happen every time. I was hoping this could be a Fall/Winter project.

    I’m at the cabin so my responses may be delayed.

    Ollie
     
  2. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    I've had good luck replacing just the clutch and roughing up the cups on the gears at a cost under $400.
    Now if you break a gear with the banging into gear, well it's going to get expensive.
     
    dlvwill, Avenger and OllieC like this.
  3. aerobat77

    aerobat77 Active Member

    605
    Aug 12, 2014
    germany
    2006 240 DA Sundancer
    5.0 MPI / Bravo III
    hi ollie !

    i had exactly the same issue and it was the cone clutch .

    only the cone clutch was replaced , not the gears .
     
    OllieC likes this.
  4. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Agree with the above - don't press your luck too long.

    What gear oil are you using?
     
    OllieC likes this.
  5. OllieC

    OllieC Well-Known Member SILVER Sponsor

    Mar 11, 2013
    MinniSoCold
    Sara Belle
    2005 Weekender 215
    Mercruiser 5.0 mpi, Bravo III
    I use only Quicksilver gear lube SAE 90. Once this thing gets replaced I will probably add a drive shower as some have suggested. I don’t have any white on the case but I do go for long runs while on Lake Superior.

    I went for a little drive yesterday and it didn’t act up. I was feathering it though.

    When I get back I am going to check the gear lube and replace it. Mine does get really dark after my short season of boating here in North Country. Drive has 600 hours on it.
     
  6. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    If you're using the regular Merc stuff (Quicksilver is just rebranded Merc stuff to be able to be sold outside of Merc dealerships), that absolutely could be the problem. Bravo drives MUST use the Hi-Perf gear lube or it can cause shifting problems.
     
    dlvwill likes this.
  7. OllieC

    OllieC Well-Known Member SILVER Sponsor

    Mar 11, 2013
    MinniSoCold
    Sara Belle
    2005 Weekender 215
    Mercruiser 5.0 mpi, Bravo III
    I'm 99.9% sure it's this stuff - but I am going to drain it and try again.
    [​IMG]
     
  8. OllieC

    OllieC Well-Known Member SILVER Sponsor

    Mar 11, 2013
    MinniSoCold
    Sara Belle
    2005 Weekender 215
    Mercruiser 5.0 mpi, Bravo III
    yep, just checked my Amazon account and it was HP Gear Lube
     
  9. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Well, actually, I was hoping you used the wrong stuff - that would have been a quick fix ;)
     
    OllieC likes this.
  10. OllieC

    OllieC Well-Known Member SILVER Sponsor

    Mar 11, 2013
    MinniSoCold
    Sara Belle
    2005 Weekender 215
    Mercruiser 5.0 mpi, Bravo III
    I was kinda' hoping too......:D

    The last two trips I made it didn't hit hard. As I mentioned, I've been nursing it as I throttle up. However if it does become more prevalent I will stop boating. I only have 1.5 months left of good quality boating season ( we're fair weather boaters) and out of that maybe 2 weeks we'll be on the water. I'll pull the drive before I winterize it. Should be a good winter project.
     
  11. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    I had some of the same issue when we had the 260DA. Always used the correct HP Gear Lube. Changed the gear lube and never had another issue......

    Bennett
     

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