my 74 husqy needs crank seals, do i need to split cases?

Discussion in '2 smokers' started by meijer's trails, Oct 24, 2013.

  1. meijer's trails

    meijer's trails Been here awhile

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    Is anyone familiar?

    Do I need to split the cases to change crank seals in a 1974. Husqy wr250?
    #1
  2. stainlesscycle

    stainlesscycle Long timer

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    you're splitting.. left side seal is inboard of bearing. them cases suck. i don't know why the husky cases are so goddamn tight.
    #2
  3. meijer's trails

    meijer's trails Been here awhile

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    wouldnt you know it.

    the easy to reach right side looks clean as a whistle.

    and im already stuck on a kickstart case screw. the one right behind the cylinder.

    im thinking of cutting it at the head so i can still grab it later and heat the case some to try to loosen it

    ideas?
    #3
  4. meijer's trails

    meijer's trails Been here awhile

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    i think ill try my 2stroke leakdown checker(fashioned from a blood pressure cuff) first
    #4
  5. Scootern29

    Scootern29 Been here awhile

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    Try a small sharp chisel and try and move the screw in the loosening direction. I just had to do this the other day. Two or three good whacks with a small hammer will usually do it.
    #5
  6. meijer's trails

    meijer's trails Been here awhile

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    thanks scootern,

    i seeped in some pb blaster lastnight.

    used a little heat, pressure back and forth.

    today i hit it with an impact driver, and it did the trick!

    dodged my first bullet
    #6
  7. stainlesscycle

    stainlesscycle Long timer

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    if the biggest problem you have splitting those is a stuck bolt, consider yourself lucky. you'll see :rofl
    #7
  8. Foot dragger

    Foot dragger singletracker

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    Ive split more then 8 sets of old Husky cases,the thing is opening them up and not having them be corroded around the crank area,borrowing a proper case splitter can make your life a bunch easier. Porosity in the crank area does the same thing or worse then leaking crank seals.

    Ive bapped them apart with woodblocks and a 5 lb sledge but its not the preferred way to do it. Really eyeball all the center case screws with good light to be sure they are all out and accounted for.
    #8
  9. Foot dragger

    Foot dragger singletracker

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    If theres room just wapping the screw or bolt side with a small punch to side stretches it a little and does wonders for loosening them. Just dont want to break what ever casing the bolt is in.
    #9