Leaking at Transom Mount

Discussion in 'Bennett Trim Tabs Vendor Forum' started by BoomerangII, Mar 9, 2011.

  1. BoomerangII

    BoomerangII New Member

    56
    May 20, 2010
    New York
    245 Weekender
    5.0 Mercruiser w/Bravo III
    I am experiencing a slow leak with one of my tabs right at the attachment point to the transom. How do I remove trim tab to inspect further? I removed the mounting screws and the tab would no budge. Not sure if there is a coupling or if there is a direct line from tab to Bennett motor.
     
  2. Tabman

    Tabman Member

    676
    Jan 11, 2007
    The Tab Cave
    boatless
    boatless

    BoomerangII,

    Most SeaRay installations use a pipe nipple through the transom that attaches to an elbow that connects to the tubing:

    [​IMG]

    You will need to remove the elbow to take the actuator off the transom.

    The best way to fix this leak would be to replace the upper hinge on the actuator so that there are good clean threads to screw the pipe nipple into. Changing the upper hinge is quite easy and I would be delighted to send you a replacement at no cherge, just send me a private message with your mailing address.

    On thing to check before I send you a replacement is to see if there is about 1" of piston shaft exposed when the actuator is retracted. If the lower hinge almost touches the cylinder body it would require a different replacement upper hinge.

    Here is a drawing to show you what I mean;

    [​IMG]

    Let me know what you find and I will be happy to help you get this fixed.

    Tom McGow
    Bennett Marine
     
  3. BoomerangII

    BoomerangII New Member

    56
    May 20, 2010
    New York
    245 Weekender
    5.0 Mercruiser w/Bravo III
    Tom,

    I feel like I stepped back twenty years in time with the level of service you are proposing! Can't tell you how much I appreciate your quick response and free replacement part offer :smt038

    I will get back to you this spring with the info you requested (exposed piston spec) since the Boomerang is still snowed in.

    Resprectfully,
    Fred Gibbons
     
  4. Tabman

    Tabman Member

    676
    Jan 11, 2007
    The Tab Cave
    boatless
    boatless
    Fred,

    I will be standing by when the snow melts (I hope it's soon)!

    Tom
    Bennett Marine
     
  5. Big Island Lifer

    Big Island Lifer Active Member SILVER Sponsor

    Feb 1, 2010
    Minnesota
    '96 330 Formula SS
    For Sale '85 255 Amberjack
    Single 5.7
    +1 for great service!




    Sent from my iPhone using Tapatalk
     
  6. Bucit

    Bucit New Member

    Mar 12, 2010
    St. Petersburg Florida
    2005 280 Sundancer
    2004 SPD-104 Achilles w/ 8hp Yamaha
    Twin 4.3 MPI's with Alpha drives.
    I had an upper hinge leak last year and Bennett was awesome to deal with including getting me the parts needed. One note though, my tabs did not have the elbow/nipple, mine was a straight shot. I removed the screws from the upper hinge and then took a small knife to slide under the hinge and cut away the 5200. Once I had it free the hinge came off along with the straight nipple and hose still attached and they slid right through the small hole in the transom. I was able to replace mine while the boat was on my lift. I replaced it, slid the hose and nipple back through the hole (I put a lot of 5200 in the hole first) and then 5200 on the back side of the hinge and intalled the screws. Not a bad job overall and the service from Bennett was great. :smt038
     
  7. BoomerangII

    BoomerangII New Member

    56
    May 20, 2010
    New York
    245 Weekender
    5.0 Mercruiser w/Bravo III
    That's what I'm thinking after inspecting the hose from the ER last summer. I found no nipple, just straight run of hose from pump through transom. Thanks for your post, I believe I will be duplicating your repair this spring...:thumbsup:
     
  8. Tabman

    Tabman Member

    676
    Jan 11, 2007
    The Tab Cave
    boatless
    boatless
    Most SeaRays do use the pipe nipple, but some will use what we call a pre-connected fitting. The tubing does run through the transom and is connected right to the upper hinge of the actuator.

    [​IMG]

    [​IMG]

    If this is what you find let me know and I will send you a new pre-connect fitting with the upper hinge. The old one is likely covered in sealant and a new one will be easier to install.

    Tom
    Bennett Marine
     
  9. BoomerangII

    BoomerangII New Member

    56
    May 20, 2010
    New York
    245 Weekender
    5.0 Mercruiser w/Bravo III
    Great Tom,

    Looks like a standard compression fitting. Loooong winter here, just getting to the boat this week. Will get the info you need to you by this Monday night.

    Thanks Again Tom!
    Fred
     
  10. ChuckW

    ChuckW Active Member

    Mar 6, 2009
    MA & Southwest FL
    2007 RoadKing Tri-Axle Trailer towed by a 2013 Yukon XL K2500
    496 MAG Bravo III
    Tom,

    I'm having the same leak at the transom wall with my port side upper hinge. It appears I have the same tube straight through to the hinge, w/o the elbow. You can see the through hull bolts for the hinge right behind the resevoir and pump. Should I attempt to seal the leak or is are replacement parts in order?

    Thanks,
     

    Attached Files:

  11. Tabman

    Tabman Member

    676
    Jan 11, 2007
    The Tab Cave
    boatless
    boatless
    Replacement parts are indeed in order!

    Is the boat still out of the water? And if so how long until you launch?

    Send me a private message with your name and address and I will mail you a new upper hing and fittiong to replace the leaking one, no charge.

    Tom
    Bennett Marine
     
  12. ChuckW

    ChuckW Active Member

    Mar 6, 2009
    MA & Southwest FL
    2007 RoadKing Tri-Axle Trailer towed by a 2013 Yukon XL K2500
    496 MAG Bravo III
    Just sent the info in PM. Thanks so much. Now that's service!!!
     
  13. ChuckW

    ChuckW Active Member

    Mar 6, 2009
    MA & Southwest FL
    2007 RoadKing Tri-Axle Trailer towed by a 2013 Yukon XL K2500
    496 MAG Bravo III
    Tabman, thanks so much for the support. Just finished installing the new kit. The only challenge was removing the current cap with all that 4200 holding it on and then cleaning out all the old 4200 to make for a good seal for the next batch.

    It's all working, hopefully will be no further issues.

    One thing that surprised me we no mention or apparent need to bleed the line once back to together. How does the air vent out of the line and cylnder without bleeding?

    Thanks again!!!! Awesome service!!!
     
  14. alwhite00

    alwhite00 Active Member

    May 31, 2010
    Michigan
    1997 250 Sundancer
    5.7 EFI/ BIII
    I called bennet with a question on my tabs last year, VERY helpful and great customer service and they know the product very well, Nice for a change.

    LK
     
  15. Tabman

    Tabman Member

    676
    Jan 11, 2007
    The Tab Cave
    boatless
    boatless
    Chuck,

    Glad we could help!

    The system is self bleeding. When you run the Trim Tabs up and down 3-4 times any air will be purged back into the reservoir. It is a single acting hydraulic system with only one line as opposed to a dual acting system like your tilt and trim or steering. There are large springs in the actuators (rams) that force them up when they are retracted. As the springs force the pistons up the airs is pushed out of the lines as well.

    Tom
    Bennett Marine
     
  16. tgarris

    tgarris New Member

    1
    Aug 14, 2017
    2016 Sundeck o/b
    300 Mercury Verado
    Tom are you still around??? Help plz! leak on 2016 tabs inside at hull (pin hole) starboard side
     

    Attached Files:

  17. Tabman

    Tabman Member

    676
    Jan 11, 2007
    The Tab Cave
    boatless
    boatless
    We corresponded and I believe you were taking it to the dealer.

    Tom
     

Share This Page

Show Sidebar