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  1. #1
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    Apr 2006
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    Default 2003 Bravo 3 Drive - Using Oil

    2003 Bravo 3 drive w/850 hours has started to use oil. The drive has always had oil changed at end of each season, the exterior is mint even though she's in the Brine for (7) months a year. Over the years, she has used varying amounts of oil at weird intervals - but this year its been more consistent.

    I have never changed any seals ( except for filler / breather washers and have never had water in the gear oil after each season.

    I do not see any leak indications at or leading from the drive oil receptacle to the drive.

    I don't see any oil leak indication in the water near the drive.

    ?

    I believe I have the tools to do a pressure and vacuum test and plan to do one at the close of the season.

    Are there seals that I should change either way ?

    Any thoughts on this ?

  2. #2
    Join Date
    Nov 2005
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    Mt. Zion, Illinois,
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    528

    Default Re: 2003 Bravo 3 Drive - Using Oil

    My boat has an Alpha One so I don't know if the same applies to Bravo. Last year I started to mysteriously lose gear oil from my reservoir and had to top it off every couple of outings. There were no leaks around seals or anywhere else. In the winter we finally removed the outdrive and found a plastic fitting in the gimbal housing was cracked and was leaking.

    KJ

  3. #3
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    Apr 2006
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    Default Re: 2003 Bravo 3 Drive - Using Oil

    Not sure of the similarities / differences between the two in terms of the oil reservoir connections from reservoir to the drive... What did that plastic piece do ? Where was it connected to ? Was there oil in your bellows ?

    My transom plate, gimbal and swivel were all replaced (2) years ago... Could be something is wrong there, but it wouldn't be from age...

  4. #4
    Join Date
    Nov 2005
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    Mt. Zion, Illinois,
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    528

    Default Re: 2003 Bravo 3 Drive - Using Oil

    Quote Originally Posted by abl1111 View Post
    Not sure of the similarities / differences between the two in terms of the oil reservoir connections from reservoir to the drive... What did that plastic piece do ? Where was it connected to ? Was there oil in your bellows ?
    The plastic fitting was a small hose barb that threads into the outdrive. A short piece of tubing connected between the outdrive and gimbal housing and that's what allows the flex as the outdrive tilts up and down with the trim. I assume there was another piece of tubing on the inside of the stern that leads up to the gear oil reservoir.

    I can't tell you anything about a Bravo so I don't know if they have the same setup. Mine was only cracked and that's why it only leaked out bit by bit. I remember seeing an oil sheen behind the boat and wondered where the source might be and it took removing the outdrive to get a good clean look to find that little booger.

    KJ

  5. #5
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    Apr 2006
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    Default Re: 2003 Bravo 3 Drive - Using Oil

    UPDATE -- Pulled boat - Bravo 3 drained oil. Pulled drive from transom/gimbal assembly. Did a 15 psi pressure test - for 24 hours or more. Spun shaft etc - no change in pressure. I'm replacing the drain plug seals for the heck of it.

    Where might I look next for a loss in oil ?

  6. #6
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    Apr 2006
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    232

    Default Re: 2003 Bravo 3 Drive - Using Oil

    Any input would be appreciated

  7. #7
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    Apr 2006
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    Default Re: 2003 Bravo 3 Drive - Using Oil

    I found where its leaking ! It's leaking near the shaft seal, where the drive goes into gimbal bearing etc. - it left drive oil in the bellows.

    Is this a big project ? What is entailed in the repair ?

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