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Historical Construction Equipment Association
Home of the National Construction Equipment Museum


American 399BC

  • 11/05/2014 8:54 PM
    Message # 3143540

    Just purchased a 399 BC, not sure of date of manufacture Serial # GS6516.  Haven't been able to get a load chart.  Any information or ideas appreciated.


  • 11/06/2014 4:15 PM
    Reply # 3144261 on 3143540

    Have a book on the 395/399. Plus I have run a few of these. What information do you need? 

  • 12/11/2014 11:22 AM
    Reply # 3168348 on 3143540


    Do you have a manual for the Detroit 3-71 engine?

  • 12/22/2014 7:43 AM
    Reply # 3174229 on 3143540

    Have been offline for a while, computer issues. I do have a 3-71 manual. What are you looking for?  

  • 12/23/2014 12:38 AM
    Reply # 3174819 on 3143540

    I found a Detroit Diesel Inline 71 manual so I am good with the engine.

    I do have a problem with the travel lock, can't get the lever to move, it is set at 2 dogs out so can move the machine but can only dig diagonally to the tracks.  Any ideas?

  • 12/24/2014 9:44 AM
    Reply # 3176382 on 3143540

    about the only thing you can do is chase to linkage from the very top. It will require a helper, take each pin out and check the movement and then put the pin back in.  Do this all the way to the pawl and you will find the problem. Had to do it on a dragline, but did find the problem.

  • 12/24/2014 4:06 PM
    Reply # 3176513 on 3143540

    Thanks,  will try that.

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