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INCONSISTANT SPOTTING

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  • INCONSISTANT SPOTTING

    I HAVE ATABLE THAT SPOTS PINS INCONSISTANTLY. ONE RACK AND THEY ARE ON SPOT, NEXT SOME ARE OFF. THE PINS OFF SPOT ARE PRIMARALY 6-9-10. EVERYTHING SEEMS TO CHECK OUT. REPLACED GEARBOX, TABLE DRIVE ASSY. YOKE IS GOOD, EVERYTHING SEEMS TO BE TIGHT. PILLOW BLOCKS LOOK OK. ANY IDEAS.

    THANKS,

    BOB

  • #2
    Re: INCONSISTANT SPOTTING

    Give us some more detail...does it spot too far back, forward, etc.
    "Where are we going, and why are we in a hand basket?"

    --Kat

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    • #3
      Re: INCONSISTANT SPOTTING

      May be a worn bushing 900 205 053 on your lightning rod. Is the back shaft 2618 bent? All hardware in good condition? Good luck,
      C-Didddy

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      • #4
        Re: INCONSISTANT SPOTTING

        I dont see how a gearbox would spot pins farther back one time and closer the other.. I agree with Magic T on this one here, the Cup Tie link might be worn. Drop your deck down and push on every row. They should be tight no slop. Another think is that Key way where the roller bearing rolls in is warn allowing the cups to swing forward a little to far at the low point of the wear.

        deadwood
        Well thats just like your opinion man...

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        • #5
          Re: INCONSISTANT SPOTTING

          Those bushings in the tie link wear out causing that row or rows of cups to have too much play in them when they are going into spot position.

          Another posibility is the cam follower for the spotting rod. If that camfollower is partially seizing up as the spotting cam is going around it could cause funny things to happen.

          Let us know what you find. [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]

          knuckles

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          • #6
            Re: INCONSISTANT SPOTTING

            We had one M/C ( 90XL )doing similar for a week or so , Nothing seemed amiss

            But it owned up to it's fault fairly quickly by cracking it's yoke 30 mins before closing time [img]/content/btubb/images/%%GRAEMLIN_URL%%/mad.gif[/img]

            I'd be getting the hammer out & tapping all around the yoke frame to see if it's about to crack up .

            Hope you have a Spare Yoke assy , We didn't

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            • #7
              Re: INCONSISTANT SPOTTING

              You could have a loose table stabilizer rod (used to adjust front to back tilt).

              Comment


              • #8
                Re: INCONSISTANT SPOTTING

                I like JJ's suggestion but if that checks out OK, make sure the table isn't tilted & the cups have their gapping screws in them (and adj properly). Spot a few racks & pull every pin that spots inconsistently. If the pins are beat up, you might have some that won't spot the same every time.

                [img]/content/btubb/images/%%GRAEMLIN_URL%%/usflag.jpg[/img]

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                • #9
                  Re: INCONSISTANT SPOTTING

                  Id like to elaborate on JJ's suggestion. We went through and checked out all our end fittings for our stabalizer rods. Some of them were frozen on their posts and others you could slide the eyeball bearing out of the fitting. At this point you can take the table and rock it like a babies cradle. If the bowling gods see fit they will make gravity a major wildcard. Check it out....

                  deadwood
                  Well thats just like your opinion man...

                  Comment


                  • #10
                    Re: INCONSISTANT SPOTTING

                    In addition to the above, you might want to check side to side level of the table in relation to the pindeck. Place Pac-Man washers between the table legs and the table casting as required to achieve level.
                    "Where are we going, and why are we in a hand basket?"

                    --Kat

                    Comment

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