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Big Mistake

Discussion in 'Chainsaw' started by BIGBUCK, Mar 8, 2009.

  1. BIGBUCK

    BIGBUCK ArboristSite Lurker

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    I was checking for loose nuts and bolts on my Husky 395XP. I over tightened the nut holding the flywheel on the crank. Broke it off. It was an awful feeling. My neighbor told me to weld a flat washer on the end of the crank to hold the flywheel on. Does that sound possible to any of you guys.
    Thanks
     
  2. Rockfarmer

    Rockfarmer ArboristSite Operative

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    I would say no,.. replace the crank. The last thing you want is that coming off at 12000 rpm. :censored: bummer

    theres one on ebay for 65,..
     
    Last edited: Mar 8, 2009
  3. gmax

    gmax Addicted to ArboristSite

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    Very unlucky, I would have thought the thread in the nut would strip before the
    threaded end of the crank would snap.
    It might be possible to drill & tap a thread in the end of the crank then loctite a bolt in there.
     
  4. Dan_IN_MN

    Dan_IN_MN Addicted to ArboristSite

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    First off....Welcome to AS!
    That is a very sick feeling!:confused: Having the wrench suddenly give way and parts drop off!

    My neighbor told me to weld a flat washer on the end of the crank to hold the flywheel on. <-------- Big NO NO!! Find a replacement crank. I would consider that to be a HACK repair. IMO. Chalk it up to experience.

    Like Rockfarmer said....


    Dan
     
    Last edited: Mar 8, 2009
  5. sefh3

    sefh3 Addicted to ArboristSite

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    Just wondering why you were checking that? That would take alot of force to break that. I would imagine those nuts were torqued down from the manufacturer. Bummer though I was rebuilding a 16hp Briggs and used my impact to remove the nut but it was going forward instead of reverse and broke it.
     
  6. Fish

    Fish Account Hold

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    A hack repair, and one that won't work.

    You would need to find a flywheel and a crank then.

    Why were you trying to tighten it?

    Just how big of a boy are you?
     
  7. wanab

    wanab Addicted to ArboristSite

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    i have a feeling who's getting the wrench here and its not a husky.



    :cheers:


    tro....
     
  8. ehgauss

    ehgauss ArboristSite Operative

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    I agree that drilling and tapping the existing crankshaft would be a hack repair. Without some real precision equipment you'll never get the thing well centered, aligned, and balanced. When you do buy the replacement crankshaft, do yourself a favor and buy a torque wrench also. In my younger years I was also too strong for my own good and twisted off many bolt heads and stripped many threads. I've learned that the torque wrench is a real friend. I have two cheap Sears beam types, one 0-600 in. lbs., and the other 0-150 ft. lbs. They've saved me a lot of grief over the years.
     
  9. Paul001

    Paul001 Addicted to ArboristSite

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    When I was still doing tree work, and building Jeeps, my buddies that I wrenched with use to call my 1/2" ratchet the "Ratchet of Death", anytime I brought it out, something was getting broken.

    After one particularly bad evening of "repairs" (more breaking than fixing), when I came into the shop the next morning all my socket sets and ratchets/breaker bars were missing except my 1/4" drive stuff. Had to make a run to the tool store to buy 1/4", 3/8", and 1/2" drive torque wrenches before my tools showed back up :)

    I'm betting in this case an impact gun was involved...
     
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  10. Dan_IN_MN

    Dan_IN_MN Addicted to ArboristSite

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    That was very cleaver of your wrenching buddies! I'll have to remember that one!

    Bigbuck.....did you have your impact out with 150 lbs of air behind it?
     
    Last edited: Mar 8, 2009
  11. almondgt

    almondgt Addicted to ArboristSite

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    I use a 3/8" impact wrench made by Husky that is underpowered for the most part. Used the impact wrench on an Echo clutch nut several times and stripped the nut when I needed to tighten it the last time. That was the only time the impact was too powerful for tightening a nut on a saw. Knowing you are removing a left or right hand nut is key to not damaging your nut, or in this case your flywheel. Certainly a 1/2" drive impact wrench would destroy a crankshaft or strip a nut, too much torque. I would agree the crank shaft will need to be replaced. :cry: I feel for you dude!
    Husqvarna 257 261wanna be an XP 61 254xp 357xp 346xp
    Pohusky 141
    Jonsered 625 630 670 670 670 2065 2050 2065
    Echo 500VL
    :chainsawguy:
     
  12. flyboy

    flyboy ArboristSite Operative

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    It ought to be a federal law that impact guns only have reverse. I have had MANY SAE cert. mechanics ruin various stuff on my cars with those things.

    Get a torque wrench and use it with the following sequence. Find the torque spec and divide it by 3. Torque the nut to 1/3 then 2/3 then full torque. That is the proper method.

    Last time I got tires on my BMW I had to jump on a 4 foot pipe to loosen my lugnuts. The store got some NASTY feedback on their website.
     
  13. hoss

    hoss Addicted to ArboristSite

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    Don't feel too bad. I just did that to a 125 mac right after a complete rebuild. I have another crank on the way, but man was i pi$$ed.
     
  14. Fish

    Fish Account Hold

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    No that repair might work fine, but that wasn't suggested.
    Welding a washer on top to attempt to repair it wouldn't
    work, the flywheel would spin.
     
  15. Taxmantoo

    Taxmantoo Plays with chainsaws

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    I would have left you all the sockets, 1/4" drive implements, a 1/4" to 3/8" step up adapter, and 3/8" to 1/2" step up. That way you could turn anything, but not more than 20ft-lb. :cheers:
     
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  16. Photog95

    Photog95 ArboristSite Operative

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    What is the deal with Huskies falling apart. I was out with my brother in law one time and his muffler fell right off. I have never had to check for loose parts on any saw I have ever owned. I have had Macs, Poulans, and now Stihl. :spam:
     
  17. Paul001

    Paul001 Addicted to ArboristSite

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    I've since made sure to have a cheater bar for my 1/4" drive stuff :) The Snapon dude and Sears hardware folks hate seeing me walk in. I keep a box under the bench for my broken tools.
     
  18. willsaw4beer

    willsaw4beer Addicted to ArboristSite

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    The consumer grade Craftsman tools these days are junk chine 'steel' anyways, might as well be tin. I hit up swap shops etc and buy all the old American and Japanese steel tools.
     
  19. willsaw4beer

    willsaw4beer Addicted to ArboristSite

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    :notrolls2:
     
  20. Photog95

    Photog95 ArboristSite Operative

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    :chainsawguy::ices_rofl::yourock:
     

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