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Pin Wobble 82-70


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  • Pin Wobble 82-70


    The back row of pins wobble when the pinspotter sets a new rack of ten pins.
    The table seems to be level and all of the front pins are set “rock solid”.
    What needs to be adjusted? Any suggestions are welcome.


  • #2
    Re: Pin Wobble 82-70

    Welcome, N.A.!!
    Let's start with the assumption that ALL table settings are good.
    1. Are all the pins on spot? If the back row is too far forward, and you can't adjust them back anymore (u-bolt restriction), then...
    2. If the three front rows are OK and have good toe, then your problem is in the tie link connecting all the rows of spotting cup shafts, most likely the rear (back row) bushing.
    3. If all pins are on spot, but the back row is wobbly, you probably don't have enough toe. You need to adjust the spotting rod so that it spots a little ahead of spot, then adjust each cup rearward. If they won't adjust rearward anymore, your table may need to be repositioned (flagged).
    3a. If flagged OK, but problem still exists, your machine may not be in the proper position or at the right height. If you suspect this, post again and we'll help you through the specs on this. Let us know if your lanes are wood (lots of sanding?), or synthetic (recently installed?).
    GOOD LUCK! [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img] [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]

    [ March 19, 2001: Message edited by: BowlEquip ]


    • #3
      Re: Pin Wobble 82-70


      I have seen the links that hold the cup actuator bushings that are on the table shafts be bent from pins in table etc. I have the same prob at my house. the lanes have been sanded so much that the table swings so low and forward it is impossible to get the rear row on spot. He might need to lower the front end unit. I am waiting foe synthetics next summer.



      • #4
        Re: Pin Wobble 82-70

        Could it be that the tie link (070 002 612) is bent between the 3rd and 4th rows of the rack?

        If it is straight, then yes definitely something is screwy with the #4 shaft and/or its bushings.

        As a temporary fix, I'd adjust the bolts on the back of each of the spotting cups so that they will set as well as possible.

        Good luck and good topic!!!


        • #5
          Re: Pin Wobble 82-70

          I agree with Magic, try bending the tie link. [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img] Also make sure the lever for that row is tight. 20$ says its the tie link bushings or the tables out of adjustment.


          • #6
            Re: Pin Wobble 82-70

            Here's an extreme procedure I heard about for getting the back row turned a bit more:
            Run the table into a spot, stopping it with the pins almost touching the deck. Remove the back lever pin (tie link) and the #9 spotting cup, and loosen the rear lever. Slide it over and remove the key. Put the lever back into position and reattach to the tie link. Now turn the cups until you get good toe and spotting and tighten the bolt to secure it to the shaft. Then drill through the lever casting and the shaft and install a bolt and nut. [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]


            • #7
              Re: Pin Wobble 82-70

              Had a yoke break(over by the 4 cup area,of course,[a little less is better when it comes to those cup shaft springs me thinks]).
              Anyhoo,this table spotted just fine & dandy before the break,but after changing out the yoke assy.we had pins wobbling & falling big time!All 10 of 'em W/THE EXCEPTION OF THE HEAD PIN.
              Tried everything:
              From link bushings to more sp.rod less sp.rod to is the "little clevis" that makes the cups turn ,180 degrees off(no).
              Starin'&thinkin'(&drinkin'-needed my thinking cap),thought,"damn thing drills the head pin perfect(on spot, no wobble,dead nuts on)"&all the other pins are about 3/8 to 1/2 inch IN FRONT of spots!
              Decided to create more "tow"(or is it toe)by unbolting spot link/off to the vice/clamp 'er in & proceed to shorten link about 3/16" halfway between #1 hole & 2-3 hole via hacksaw.
              Off to the welder,reinstall(after 4 fresh bushings,of course),YEAH BABY!
              Musta guessed right 'cause had to barely tweek cups to spot(thinkin' less is probably more when shortening).
              Then got to thinking Why? what was so different about this new yoke?
              Ah! Started fine tune measuring stuff & wasn't coming up w/12" shaft to shaft.So beware.Have used this "fix" 3 times now (various points of the link)through my many moons.

              As always
              keep that big hammer ready [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]


              • #8
                Re: Pin Wobble 82-70

                Just my two cents worth; YOKE-YUK [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img]
                If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it." -W.C.Fields


                • #9
                  Re: Pin Wobble 82-70

                  Just a thought... Why dont you just hop in and take a look see. And If you dont find anything, try slamming your table. There are so many variables to consider if you truly want to find out why your pins wobble, just break out your manual and slam the table.


                  But im just a "B"


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