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Sweep Contacts Head Pin


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  • Sweep Contacts Head Pin

    I have a machine (82-70) where the sweep hits the head pin during run through every couple of frames. I have tried adjsting the cams, changing chassis, raising the table height, and even stopping the sweep slightly before 66 degrees. Any other things I should look at? [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img]

  • #2
    Re: Sweep Contacts Head Pin

    One of the first things I would look at was to get my cams back to the correct timing. Second I would check the respot cell if its properly adj.(#1 the fingers are gripping the pin with right amount of force an not letting it slip down.) And third I would get the table back at the correct heigth.


    • #3
      Re: Sweep Contacts Head Pin

      Kevin, your problem is with the adjustment on your tb cam switch. Turn the screw clockwise which will lengthen it. This will moce the cam lever away from the cam which will delay your sweep run through. If you cannot get the adjustment the the cam itself needs to be rotated one way or the other on your table drive shaft. Good luck


      • #4
        Re: Sweep Contacts Head Pin

        Ditto for what GPS said. Table cam controls the start of the sweep run through.


        • #5
          Re: Sweep Contacts Head Pin

          Check and see where the nylon roller is in relationship to the lever that depresses it to allow the eccentric to release to spot pins.

          I adjust mine so I can get my index finger between them when the table is adj. at 0.

          The adjustment is to move the whole cam assy. on the shaft to get the table to stop and start in a different place giving you the clearance.


          • #6
            Re: Sweep Contacts Head Pin


            The TB cam is used for interlock purposes in conjunction with the SC switch.

            The TA2 cam is what's responsible for initiating the sweep. [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]

            But, more than likely this is where your problem is since you've narrowed it down to inside the pinsetter by changing chassis.
            Might want to double check for a sweep motor coasting problem as well...if your interlock cams are too far off it will not interlock and allow the sweep to coast in too much.
            "Where are we going, and why are we in a hand basket?"



            • #7
              Re: Sweep Contacts Head Pin

              TA-2 (Middle Cam) lever needs to be screwed out, or table cam cluster needs to be delayed(rotated back)

              reguardless of table height, sweep should easily get under the head. stand behind the machine and watch the sweep and table, as table comes down sweep should just be going back out. if sweep is going out while table is still rising, sweep run through is too early.


              • #8
                Re: Sweep Contacts Head Pin

                Dont you people have a Go - No Go gauge (Cam gauge)?!?!?! [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img] [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img] Just check the cams with your lil gauge... Guessing is just going to create a headache for you.

                Well thats just like your opinion man...


                • #9
                  Re: Sweep Contacts Head Pin


                  The proper terminology is a 136/176 gauge.

                  I guess 40 thousands is the tolerance.


                  • #10
                    Re: Sweep Contacts Head Pin


                    Go with what GPS said. If it still happens occasionally, you probably have an intermittent SWP coast. Check the C-1 plug. If that looks OK, try changing the CSM-2 capacitor.



                    • #11
                      Re: Sweep Contacts Head Pin

                      OK I checked everything out on this machine...I watched the table shaft during the run through and saw it moving intermittently. I loosened the eccentric, and to my horror, found the key and keyway destroyed, allowing a lot of slop in the whole thing. I changed shafts and eccentrics and got everything back together and works perfectly now... [img]/content/btubb/images/%%GRAEMLIN_URL%%/cool.gif[/img] <font size="2" face="Verdana, Helvetica, sans-serif">"If it ain't broke...don't fix it...if it is'd better have some time on your hands...


                      • #12
                        Re: Sweep Contacts Head Pin

                        Kevin, Dutch is correct in saying GPS is correct only Kat is correct in saying that GPS meant the TA2 Cam and not TB.

                        In fact just about everyone has a fix on what could cause this symptom.

                        Sometimes you can have dirty sticky buttons on your cam switches; a little WD40 and actuate it several times and your ready to go.

                        You said you retarted your sweep from 66 degrees.
                        Watch to see if your motor drifts, this will definately cause your problem.

                        Adjust TA2 or rotate cam cluster away from you. You'll know if you've rotated too far because your spotting assembly will not work correctly and or intermittantly.

                        The correct terminology is the Cam Gauge, .136/.176 are the thicknesses of each end.

                        Pinspotters do not break down when they are not running!


                        • #13
                          Re: Sweep Contacts Head Pin

                          Its called a Sweep cam guage. [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img]


                          • #14
                            Re: Sweep Contacts Head Pin

                            do you guys really use the guage
                            I haven't used one in 30 years. [img]/content/btubb/images/%%GRAEMLIN_URL%%/eek.gif[/img]
                            I forgot what they look like. :p CRUDO
                            if things aren't going right just use a bigger hammer! DIRT


                            • #15
                              Re: Sweep Contacts Head Pin

                              Make sure you have motors on the machine of matching speeds (12 to 1 or 14 to 1). Sounds to me like the table motor is slower and the sweep is faster. You might also change the table switch that the others say controls timing. Sorry if I am a little rusty on the 70s, its been 6 years since I worked on them [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img] .
                              Gene Simmons for president!!!


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