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sloppy sweep


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  • sloppy sweep

    I have a machine that is giving me problems with the sweep. For awhile, it would keep sliding out of adjustment and thus not trip the scoring switch. It also hesitates at the back row and lurches and bounces at the guard position. I've readjusted all linkages and got it to score consistently. Also adjusted cams, but it still has the quirky jerkys. Hoping its not in the drive shaft but running out of ideas. This is on an 82-70. Any thoughts?

  • #2
    Re: sloppy sweep

    Tighten the bolt on the sweep crank arm.


    • #3
      Re: sloppy sweep

      Just a couple of things for you to check if you have a jerky sweep. First check that your sweep crank arm on the end of sweep drive shaft is tight, also the nut & bolt might be tight but check the slop on the shaft, ie check the woodruff key slot, the key itself & the keyway in the crankarm. Also check your sweep rocker arm/torque tube, on the 10 pin side where the short 3162 rod connects & the sweep connecting rod 3116, where the bolts go through the rod ends & in to the rocker arm you'll see that they just go through a welded section, disconnect rod ends & simply feel the section the bolts goe thru, if its sloppy it'll need welding back into secure it. i take it you've already tried all of the obvious like loose nuts & bolts, broken or worn rod ends, sweep touching framework of machine, nut & bolt that connect telescopic rod to sweep linkage not catching 3116 rods during operation etc.
      Anyway, good luck.


      • #4
        Re: sloppy sweep

        King nailed it, crank arm... Get that sucker TIGHT... It will cause hesitation at different positions, and if loose enough and bad jumping at 2nd guard. If not that excessive wear to the sweep shaft "teeth" where they join with the gearbox can cause this also, if so replace the shaft and it will run smooth as silk, good luck [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img]
        All I want in life is to turn wrenches and climb around pinsetters/pinspotters again :/


        • #5
          Re: sloppy sweep

          Contact Paul Bany. He has a die that punches out plastic thin spacer washers made out of 'Super Tough'(trade mark) nylon. They have a radius for an opening so they slide in between the links to take up slop. It is not for a "Quick fix" they will last a long time. The large ones that goes on the upper pillow blocks under the cat walk work especially well. His company is Bowling Maintenance, Inc. 612 508 4791. Sometimes the really simple ideas work the best.
          Yeah but, We've always done it that way.


          • #6
            Re: sloppy sweep

            Also, check to make sure that the arm crank didnt move in on shaft causing it to rub.
            Don't mind me, what you read is invisible.


            • #7
              Re: sloppy sweep

              Thanks guys. I'll check out a few more things and get back to you.


              • #8
                Re: sloppy sweep

                That was it. Crank was moving all over the place. Hate when I miss the obvious stuff.

                Thanks again for the tips.


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