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Gear Box Problems


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  • Gear Box Problems

    Ok.. I am seeing a possible problem developing on one of the lanes..

    On one of the lanes the main 1:1 shaft as it is turning it jerks a bit. about 3 times every turn.

    Also what kind of Oil goes in the gear box, So I know if I put the right kind in..

  • #2
    Re: Gear Box Problems

    Broken/worn key in the 1/1 most likely cause of jerking.

    Gearbox oil

    Model "A" with the dashpot bleeder time delay 10-40 motor oil

    A-2 machines, 90 weight gear oil



    • #3
      Re: Gear Box Problems

      we have a few machines that have some worn keys, some worse than others. Prior to the current mechanic team's arrival, it was common during the clearing of a deck jam to back the gear box off letting the deck holding hook hold the deck and then lift up on the deck holding hook and let the deck fall! We think that is where alot of our worn gearbox keys originated from.


      • #4
        Re: Gear Box Problems

        Ken, I would agree with Kevin. Most likely the 1:1 key ( on the inside of the gearbox) and possibly the 1:1 gear need replacing.Although not as likely, you could have a bad key ,and or gear in the 4:1 housing. To determine where the problem is, with a full set of pins on the pin deck, firstball, cycle the machine to 90 degrees. Unplug power cord, and try to pull up , and push down on the rake crank arm . If you get movement,only on the crank arm shaft , you have a broken wormwheel key. With the machine in the same position ( you might have to disconnect the shot gun to take the pressure off the rake cam )put a wrench on the bolt that holds the rake cam to the 1:1 shaft. Try to rotate the shaft both clockwise and ccw . If the 1:1 shaft moves , with out moving the 2:1 assembly, the problem is in the 1:1 key/gear/shaft. With any luck, the guys that say they can change a 1:1 gear in an hour, [img]/content/btubb/images/%%GRAEMLIN_URL%%/eek.gif[/img] will post the steps they use to do that job. [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img] Sure sounds like you will need to do a 1:1 in the future. [img]/content/btubb/images/%%GRAEMLIN_URL%%/frown.gif[/img] good luck, Mark
        There is light at the end of the tunnel - just be sure it is not a train.


        • #5
          Re: Gear Box Problems

          Another thing to check out. With your machine at "zero" degrees, Grasp the rake crank arm and try to physically move it up and down. If it moves more than a 1/4 inch, and moves the rest of the gear box with it, you have a worn worm wheel. I have seen the rake crank arm move as much as a 1/2 inch or more.......didn't sleep a lot that night.
          I got it ! I got it ! Oh damn


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