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Need some advise on changing a frog on the moldboard

Discussion in 'Motor Graders' started by King of Obsolete, May 16, 2010.

  1. King of Obsolete

    King of Obsolete Senior Member

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    buddy barry's other grader which is a rental machine came back with the frog woren off the moldboard. a quick call to jade in edmonton and the new frogs arrived. so on monday i'll be welding them on the moldboard. any tips on this???? also the grader is a 1996 740a champion.

    thansk
    KoO
    Published Author
     
  2. CRAFT

    CRAFT Senior Member

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    Ya Right ! ....been dare done-dat ..... Had that issue a few years ago ... thought no problem, hust crank it up and stick it back on
    WRONG
    Had the frog break off on my exc dig bucket , when I welded it back on it wasn't to long before it broke off again ....:( ... :Banghead

    Got a hold of Weldco Beales Manufacturing and asked whats the trick ... :beatsme

    They sent me 8 pages on the science of welding frogs
    Long story short, it came down to: ...:cool2

    HEAT both the frog and the surface to be welded onto, to the point of when you spit on it the spit EXPLODES or dances on both ( you'll get the drift when U see it )

    Until then don't even think about welding them together !

    When its ready pour the 'OL 7018 to it and it'll stick for ever

    If a guy wants to get fancy he could use the supposedly better 223, but as the old timers say, can't beat the 7018, its way cheaper ( even Princes-auto has it ....LOL) and its easy to use, and puts up with alot of crap

    Did that about 6 yrs ago and everything else has broke but not the Frog

    Good luck ! ...... an' Cheers :drinkup
     
  3. mitch504

    mitch504 Senior Member

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    What's a frog?
     
  4. Grader4me

    Grader4me Senior Member

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    frog.jpg


    Its the bottom of the moldboard where the bolts are. Sorry..had to throw that picture in there..lol
     
  5. King of Obsolete

    King of Obsolete Senior Member

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    thansk guys, i have a better picture of the frog and how it is worn down plus a sot of the 2 piece frog to be welded in.

    thansk
    KoO
    Published Author
     

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  6. willie59

    willie59 Super Moderator

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    A frog???

    You grader people sure are, um...different, G4m. :yup

    Ok...so where's the 'possum on a grader? :lmao :cool:
     
  7. Zed

    Zed Well-Known Member

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    preheating and post heating should be applied to any high stress area, especially anything to do with GET... I see the effects of failure to preheat ALOT, and I'm still amazed at how many trained boiler makers/welders don't follow the correct procedures.
     
  8. mitch504

    mitch504 Senior Member

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    Thanks G4me you taught me two things:
    1. What to call the base of the blade (it was written on the new part so I don't think y'all made it up) ... and more importantly...
    2. I'm not the only smartass on here:notworthy:D
     
  9. 95zIV

    95zIV Senior Member

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    HEY!! Railroaders have frogs too!
     
  10. Cmark

    Cmark Senior Member

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    Personally, I would call it a sole-plate.
     
  11. Grader4me

    Grader4me Senior Member

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    LOL...I know but I just can't help it!




    Its the section of comebobbulatermishap that attaches to the sionoctic solenoid. You didn't even know that? lol

    On a serious note...its really a shame that an operator (or should I call them that) wears the blade out and gets into the "frog". Just plain stupid...Going to take alot of work to fix that...
    Looking at the pictures...probably the guy was just keeping an eye on the outside edges that he could see from inside the cab. The center in most cases will wear out first. Just have to get out and check it once in awhile....
     
    Last edited: May 17, 2010
  12. digger242j

    digger242j Administrator

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    You kiss it, and when it turns into a Prince, you change him... :cool:





    :beatsme
     
  13. bigrus

    bigrus Senior Member

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    Reverse yor edges for maximum wear

    Being an owner operator, I look to get the absolute most value out of GET's, so I keep a good eye on how far the edges are wearing & usually reverse the edges when the centre is wearing. By doing this I can wear them down to an even 10mm left & give them to friends with drag buckets that use grader edges upside down as cutting edges (the top side is still sharp).
     
  14. Grader4me

    Grader4me Senior Member

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    I agree that would be the best way to do it, but if the center is worn down quite a bit more than the ends, and you reversed the blades the center would catch before the ends. Make it harder to grade a road until they evened up. But...if reversed when wear in the center is noticed then it would work great.

    When my blades start to wear in the center I put them on the grindstone to even them up. Grindstone = pavement...lol
     
  15. ovrszd

    ovrszd Senior Member

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    I agree. I also use 8" cutter edges because I throw away a smaller percentage of the part versus 5". I can't imagine doing that to a moldboard. But I guess that's what you get with rentals.
     
  16. ovrszd

    ovrszd Senior Member

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    I've stopped mid-day and reversed my edges so I wouldn't end up with that problem. I'll swap 8" edges 6-8 times in their life.
     
  17. 2stickbill

    2stickbill Senior Member

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    I had to laugh because that is what I was thinking.The pic done it.:D:D
     
  18. 2stickbill

    2stickbill Senior Member

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    At times you can see the Possum on the Grader under a shade tree asleep.Some call it an operator.:D
     
  19. MKTEF

    MKTEF Senior Member

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    Frogs? I couldn't for my best figure out what you guy's where talking about.
    Welding stuff to the moldboard?
    I kept my fingers far away from the keyboard.

    Still i dont se the problem...
    Check out our setup; to reach the moldboard u got to sleep very loong and grind it for a long time....
    (pic taken when new in 2007)
     

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    Last edited: May 17, 2010
  20. Grader4me

    Grader4me Senior Member

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    I'd take a bet thats what everyone was thinking...lol..course had to be me that threw in the pic...:naughty