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why me? 372 blown...again

Discussion in 'Chainsaws' started by Mattyo, Jan 13, 2018 at 3:02 PM.

  1. Mattyo

    Mattyo Youtube speciawist

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    its about 13.6mm on one, and 12.6 on the 372 ... ID of the clutch
     
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  2. Stump Shot

    Stump Shot Old *pretty boy dipstick of Quality

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    From old parts 570 @ -10F from outside. May be some shrinkage. Lol

    IMG_20180113_180016078.jpg
    IMG_20180113_180036713.jpg
     
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  3. Mattyo

    Mattyo Youtube speciawist

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    yup... m15....bastids!
     
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  4. Stump Shot

    Stump Shot Old *pretty boy dipstick of Quality

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    I have a 570 for sale if you want to use that clutch. Lol
     
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  5. Mattyo

    Mattyo Youtube speciawist

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  6. Stump Shot

    Stump Shot Old *pretty boy dipstick of Quality

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    LOL!
     
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  7. RI Chevy

    RI Chevy Stihl Runner

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    Damn Hooskies! LMAO
     
  8. JonCraig

    JonCraig Super OPE Member

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    I’m confused. How does the wrong clutch cause an air leak?
     
  9. Mattyo

    Mattyo Youtube speciawist

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    It may not have been cinch ing down the bushing enough.
     
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  10. Mattyo

    Mattyo Youtube speciawist

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    Believe me...I'm just as confused. When I spun on the actual 372 clutch. ...the leak went away
     
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  11. decableguy2000

    decableguy2000 Super OPE Member

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    My guess, it wasn't holding the crank sleeve tight enough against that tiny little oring or letting it rub the seal lip they wrong way.
     
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  12. JonCraig

    JonCraig Super OPE Member

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    Cinched bushings, crank sleeves, tiny o-rings...

    I guess I really don’t speak Husky... (Not a dig, they just don’t pop up around these parts...)

    Carry on, then!
     
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  13. paragonbuilder

    paragonbuilder ONE OF THE GREATEST!

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    Can a 372 be pressure/vac tested without the clutch on?
     
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  14. Mattyo

    Mattyo Youtube speciawist

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    Yes and no....the clutch holds that bushing tight. ...so...you can try testing it....but it won't be an accurate test...

    Fyi....the 440 has basically the same setup
     
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  15. CR888

    CR888 Pinnacle OPE Member

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    Maybe with saws liks the 372 & 660 being copied & sold with complete parts availability, Hoosky & Stihl made slight thread changes on the 570-576 & 661 clutches so AM parts would not fit & work. Its the only logical reason for such parts madness!
     
  16. Mattyo

    Mattyo Youtube speciawist

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    It's madness...no question!
     
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  17. paragonbuilder

    paragonbuilder ONE OF THE GREATEST!

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    Ok so the truth is not properly. So the wrong clutch being not seated properly could very well have been the cause of the air leak. Hopefully it’s all good now!
     
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  18. Mattyo

    Mattyo Youtube speciawist

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    Who knows lol!
     
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  19. huskyboy

    huskyboy ONE OF THE GREATEST!

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    That’s a shame on the buggered piston, sounded like you had a lot of time machining it.
     
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  20. Mattyo

    Mattyo Youtube speciawist

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    Actually no it does not take me that long to cut a pop-up piston but I don't have the lathe at my house I have to go down to my folks place based on the fact that I still have a hundred and eighty-five pounds of compression maybe not all is lost but who knows
     
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