How to remove old thru-hull transducer?

goatram

Notable Member Gate Keeper to the Great Northwest
  • Apr 3, 2008
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    Stanwood, WA
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    grrrrrrrr
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    33' RBW MISS ELIZA
    5200 works and it is a bitch to remove But it won't leak. heat will aid in its removal. But if properly installed and allowed to cure it won't leak.o_O
     
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    Uncle Binky

    Proficient at swapping lower units
    Oct 17, 2010
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    Monroe WA USA
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    Mark
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    Herring Voices - Grady White 265 Express
    The Goat said it - 5200.
     
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    Wild Bill

    Not Blackmouthing
    Aug 4, 2010
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    Otter Craft
    My understanding is the sealant properties of 4200 and 5200 are pretty much the same. The adhesive properties of 5200 are much stronger obviously. In that application I use 4200 as crazy adhesive properties are not needed due to the strong mechanical properties of the thru hull transducer assembly. 5200 definitely will work but way overkill and a bitch to take apart later.
     
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    tanner.s

    Fish Slaughterer
    Oct 18, 2012
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    Tanner
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    1997 Proline 23 W/A
    If using a very long term product, like a bronze through hull, I'd use 5200 for it's more permanent properties. Anything that will be taken apart within a few years, 4200 will do it.
     
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    53driver

    Almost A Member
    Sep 20, 2008
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    Mackay Marine, Fife Wa.
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    Dave/Olex
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    19' Livingston Viking 'Iku Turso'
    Update: the transducer is out. It just took some heat and a bigger pair of channel lock pliers. There was surprisingly little sealant between the 'ducer and the hull. Never leaked a drop tho, despite being installed almost 10 years-ago.

    The hole size and location are the same as I need for the new transducer. Is 5200 the recommended sealant for the new install?


    All we use at our shop to seal most anything is Boatlife Lifeseal. Sticky and seals great, but gives you a fighting chance to remove the part later in one piece if needed. We occasionally relaunch a boat with out it being cured without a problem (boat hanging in the sling for a transducer install only haulout)
     
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    Spoons

    USCG Master
    Oct 21, 2004
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    Capt. Erik
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    21' Center Console
    If that's 5200 under the nut it needs heat...in my opinion.

    Kim is on the money. You don't need a torch. If you don't have a heat gun go to harbor freight and pick one up for $15. Heat all around it for a good 5-10 min, keep the gun moving. a good long pipe wrench 18-24" should twist it right off.
     
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    KimH

    Someday I'll live the dream.
    Mar 4, 2009
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    Kim is on the money. You don't need a torch. If you don't have a heat gun go to harbor freight and pick one up for $15. Heat all around it for a good 5-10 min, keep the gun moving. a good long pipe wrench 18-24" should twist it right off.
    Yup it looks like that's what he did. The Kid actually maybe kind of sort of listened to his Uncle. Damn it's tough being right all the time.:D:D
     
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    goatram

    Notable Member Gate Keeper to the Great Northwest
  • Apr 3, 2008
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    grrrrrrrr
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    33' RBW MISS ELIZA
    Yup it looks like that's what he did. The Kid actually maybe kind of sort of listened to his Uncle. Damn it's tough being right all the time.:D:D
    Damn Whipper Snappers![emoji214]
     
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    Nick Rudnick

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    Nov 20, 2014
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    17' Aluminum Skiff
    Kim is on the money. You don't need a torch. If you don't have a heat gun go to harbor freight and pick one up for $15. Heat all around it for a good 5-10 min, keep the gun moving. a good long pipe wrench 18-24" should twist it right off.

    If its a harbor freight heat gun, get two. The first one will only last 30 seconds:frehya2:
     
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    evilkhemist

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    Mar 17, 2005
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    Brandon
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    Parker 2510xld
    I also used everyone's advice today to remove a b60. I started with pb blaster and then used some heat. I alternated a couple of times and then used a chisel and hammer to rotate the nut. Took about 15min total to remove the old transducer that had 5200 on the threads. Now I just have to muster up the courage to put a bigger hole for the b175hw that I just purchased. Thanks for the info guys.
     
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