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  1. #1
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    What is this?? Pulled Powerhead

    Pulled a powerhead and this stayed on the driveshaft. What is it?
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  2. #2
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    That is part of your blown out bottom crank seal. I blew several on my 2.5s over the years, probably from lean-sneezes.

    "Confidence" is that wonderful feeling you had right before you fully understood your true situation.- Unknown
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    Allison GSE 300XS

  3. #3
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    I did more research. Looks like the seal carrier. Designed to keep the splines on the driveshaft clean I think. Not really part of the seal it seems

  4. #4
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    Nothing to do with crankcase sealing,just a seal(o ring)carrier that taps into the bottom of the crank to keep grease on the splines and water out of them,clean it and the crank,apply your favorite glue,and tap it back...Chris

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  6. #5
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    Technical term IS seal carrier about half the motors I build them half not they tap onto the bottom of the crankshaft , my guess is to protect the splines from salt or brackish water I coat the hell out of the upper drive shaft spline with a good grade of anti seize before assembly, works great ��

    Jay
    Jay @ JSRE

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    Thank you Chris. I’ll do exactly that

  8. #7
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    Quote Originally Posted by Radiant View Post
    Thank you Chris. I’ll do exactly that
    Yes,be sure you do,without it in place the grease will quickly be slung out and the dry splines will wear and rust away in salt water...all 60 degree mercs,2.0,2.4,and 2.5's 1976 on came with them,and although sometimes they fall out and get left out,they need to be in place.Do not put a big gob of grease on top of the driveshaft when putting the gearcase back on,as this can hydraulic the seal back out when the grease is compressed... with no place to go,it pops the seal carrier out,Chris
    Last edited by Chris Carson's Marine; 07-13-2019 at 07:54 AM.

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  10. #8
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    All the Mercs I deal with are freshwater bass motors. I've never seen one...

  11. #9
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    Quote Originally Posted by nitro_rat View Post
    All the Mercs I deal with are freshwater bass motors. I've never seen one...
    Looks like part of the crank when in place,pretty sure you just haven't paid notice,they all came with them...

  12. #10
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    Like I said half motors have em the other have don’t and like nitro said I build mostly fresh water pieces , the anti seize is what I have always used , JMO ...If you wanna replace jut remove and tap back in bottom of crankshaft !! No biggie!

    Jay
    Jay @ JSRE

  13. #11
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    Quote Originally Posted by Jay Smith View Post
    Like I said half motors have em the other have don’t and like nitro said I build mostly fresh water pieces , the anti seize is what I have always used , JMO ...If you wanna replace jut remove and tap back in bottom of crankshaft !! No biggie!

    Jay
    I suppose you might get away with not having it in place in a limited use fresh water situation,where i'm at the splines would be gone in a year of fishing,or so frozen the gearcase wouldn't come off...all the cranks came with them from the factory,if they aren't there they have simply been left out,fact,not opinion...

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  15. #12
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    Thanks Chris for that info I will take it under consideration . I’m always willing to learn and improve my work . Been building these hi per motors for 25 years but always willing to consider others ways of doing things

    Thanks,
    Jay
    Last edited by Jay Smith; 07-13-2019 at 10:01 AM.
    Jay @ JSRE

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    Thanks Jay,and you're welcome...salt water motors really need em,Chris

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  18. #15
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    Quote Originally Posted by Chris Carson's Marine View Post
    Thanks Jay,and you're welcome...salt water motors really need em,Chris
    Yes they do! We get very very few FW motors in out shop but when we do oh my is it a treat. Lol

    I always love the freshwater guys in class that say, "make sure you lock tight that bolt" and the saltwater guys respond with "lock tight? You better anti-sieze it so you can get it out".
    Last edited by RSWORDS; 07-13-2019 at 06:34 PM.

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