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Rake board contacting deck surface


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  • Rake board contacting deck surface

    Rake sweep link sweeped and rake board under deck pinchaser trying to unjam good thing i came in when i did would of been shot out to the masking unit.Put new rake link,4 to 1 rod,rake assy was tweaked changed,rake not sweeping good.thought maybe the shotgun was bad exchanged but still not sweeping the right motion the rake sweeps to ground after comming out of 180 do i need to change the shotgun again.The machine is A-2 japs the link above the sweep link i flipped it up when it is down will not sweep does not catch on the sweep link i have had this problem before but forgot how i fix it.

  • #2
    Re: Rake board contacting deck surface

    Sounds like the rake cam slipped when she jammed. Readjust the cam and she should be fine. Use Masternuts method. It is awesome and really makes the rake adjustment easy.

    let me be myself


    • #3
      Re: Rake board contacting deck surface

      i thought so i moved a little need to double check it thanks Bob


      • #4
        Re: Rake board contacting deck surface

        Robert, Billman is correct about the rake cam being out of adjustment. When the rake dropped behind the pindeck, the rake cam was urged "out of time " or not "in balance" . The rake should never drop behind the pindeck. The rake lowering stop ( part# 12-252362 ) should be adjusted to prevent the rake from dropping behind the pindeck if the "shotgun" becomes unlatched during the rake cycle.
        You must determine why the shot gun is coming unlatched during raking. Check the rake shock adjustment. Do not rule out the shotgun unless you have either used a new one, or completely rebuilt a used one.
        Until someone posts the link for Masternuts' rake cam "balancing " link, use the book method to set the rake cam in time: Stop the gearbox at 180 degrees, by turning off the breaker. With the gearbox clutch engaged, rotate the gearbox 2 full turns in the reverse direction. Loosen the six bolts on the rake cam, you might have to gently tap the rake cam until it moves into its low dwell. Tighten the bolts.
        I would check the rake lowering stop ( also called the safety stop) on everyone of your machines.
        There is light at the end of the tunnel - just be sure it is not a train.


        • #5
          Re: Rake board contacting deck surface

          On my Japs i marked all of my rake cams with a permanent marker so if one does slip or slowly changes i see it and put it back to where it belongs,i mark the cam and hub.I also mark other things too just in case something happens,makes a swap job/alignment faster.Marking works on any machine.
          Just a tip for ya's.
          Use what you have to,to get it through the shift then fix it right.Do it right and live through the night...Safety first!


          • #6
            Re: Rake board contacting deck surface

            Here is Masternuts' method

            Sounds like rake cam is not "balanced".Here is the way I have been doing it for years.
            The sweep pattern is different sweeping forward than sweeping back...

            Take the first measurment between the 2,3_4,5,6 pin spots as the rake is going back(towards Pit).
            Take second measurment at 1" behind head pin as rake is comming forward.

            These are the two lowest points in the cycle.You want to balance the cam until these measurment are the same(Within an 1/8).

            If measurment 1 is lower than measurment 2 then you need to retard rake cam ,if measurment 1 is higher than measurment 2 then you need to advance rake cam.

            Hope this makes sense its hard to write,but it works. It allows us to adjust our rakes to within 1/4 inch to the lane.

            Thanks again to Masternut!

            let me be myself


            • #7
              Re: Rake board contacting deck surface

              I rechecked it and was way off put back in place sweeping normal again thanks for the info



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