Water leaking into the bilge at rear of the engine

Discussion in 'Gas Engines/Drives/Transmissions/Props' started by emckissack@hotmail.com, Oct 15, 2017.

  1. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    The boat is currently at the repair shop, they will be looking at in next week. I'll keep this thread posted with what they find out
     
  2. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    UPDATE. Got the boat back and all the guy could find was one of the 3 drive shaft O rings had a piece of rubber shaved off of it. He said that he could not really find any signs of water in the bellows and the bearings all looked and felt good. said that the bellows and bearings did not need to be changed. He did go into the engine bay and saw where water had been collecting on the Y pipe because he found a bit of surface rust starting to form. He said that water coming in from the drive rod would pool there and makes sense that the water is coming from the O ring. This would be the best news if it was really the problem as it only cost me 125.00 for the repair. Can anyone chime in and confirm if one of the three O rings being bad could let the drive shaft leak?
     
    Last edited: Apr 13, 2018
  3. Espos4

    Espos4 Active Member

    469
    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    Those o rings on the drive shaft do not seal out any water.
     
  4. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    Is there any part of the drive seal kit that would allow water into the bilge if it was not working properly?
     
  5. Espos4

    Espos4 Active Member

    469
    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    Not that I could think of....

    The Bravo 3 installation seal kit has an "L" shaped gasket that seals the raw water inlet. If that leaked, the raw water pump would draw air once the boat was moving fast enough to allow the top of the outdrive to be exposed. If this gasket was leaking, I don't see how it could allow water to leak into the boat.

    The O-ring around the shift cable connection, if that leaked, water could possibly get into the drive??? But not directly into the boat. Not a good thing, but still don't see how this could cause your issue.

    There is a small O-ring that seals the remote oil reservoir spring loaded connection. If that leaked, water could mix with the gear oil. Not a good thing, but I don't see how this could cause the water leak that you are describing.

    The 3 O-rings on the drive shaft.........there shouldn't be any water around the driveshaft.
     
  6. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    I will have to wait until next weekend to find out if the repair worked.
     
  7. Korkie

    Korkie Member SILVER Sponsor

    198
    Feb 2, 2016
    Leonardtown, MD Potomac River / Chesapeake Bay
    340 Sundancer 2006, Garmin 7612, xHD Radome
    Merc 496 Mags, Bravo III Drives
    My thought is steering pin assembly as well. That drip looks all too familiar.. Had same issue with a previous boat. Turned out to be bad seal. Was so corroded a new seal wouldn't stay in place.
    Only gets worse, not a fun way to start the season. Best of luck.
     
  8. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    Would that have been something that would have been seen with the drive off? How would I verify if this is the cause?
     
  9. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    New information. I took this video today and could only find one place that shows signs of water intrusion. The video below will show the place I found. It is the lower bolt on the starboard side of the gamble mounting bracket. I can't tell if water is coming in through the area where those tubes are exiting through the transom. The lower pic is a shot of the steering arm that doesn't look like it would be the problem. The dirt may be from a dirt dobber nest that I broke up last year. I don't know why it got turned sideways???

    IMG_0306.JPG
     
    Last edited: Apr 17, 2018
  10. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    Not many places for water to enter but having the boat in the water for the first video would be helpfull to see any leaks.The steering arm leaking would only show up is it is underwater,you may have to put some people at the stern to lower it a bit. Should it leak there, the seal is bad and needs replacing due to not having the grease fitting there. It is easily re-installed though.
    Below that is the Y pipe. That will leak in the water with the motor running or not, again easily seen . Below that is the mounting plate for the drives hyd trim. Very rarely will that leak there .
    Lat but the worst is the transom seal, or a rotted transom, or the 2 lower bolts broken from a hard strike
     
  11. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    Guess I found the culprit. The swivel hinge pin....
     

    Attached Files:

  12. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Check out JRMarine's video on the repair. Very detailed how to.
     
  13. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    Thanks, Already have the parts ordered
     
  14. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Order the aftermarket SS swivel pin not the Merc pin or history will repeat.
     
  15. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    I got the Nuwave stainless steel pin
     
  16. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    add the grease fitting not matter what pin you use
     
  17. emckissack@hotmail.com

    emckissack@hotmail.com Member

    112
    May 21, 2016
    Pensacola
    240 Sundancer 2007
    5.0 Bravo 3
    Where should I place the grease fitting for best results?
     
  18. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    upload_2018-4-22_21-58-31.jpeg
     
  19. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    upload_2018-4-22_21-59-6.jpeg
    use a 5/16 ths nut as a gauge
     
  20. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    locate the center, using a #3 drill bit drill 3/8 ths deep. Switch to a 1/16 th bit and drill watching the bit. You will see aluminum, then brass, then steel STOP
    Tap for 1/4 x 28 thread and install the SS grease fitting
     

Share This Page

Show Sidebar