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15 yrs and never replaced a sweep drive shaft

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  • 15 yrs and never replaced a sweep drive shaft

    Keyway is trash. This looks really simple but I have never done it. Any KISS advice?
    Go Pirates

  • #2
    Compared to the table shaft, it's nothing really.

    Drop sweep to guard - LOTO

    Remove bolt in crank arm connecting rod or remove crank arm, doesn't really matter but the crank arm may get in the way

    Loosen the sweep cam clamp studs and slide them towards the gearbox

    Unbolt the bearing flange (if you only have the one bearing at the crank arm end this will be faster, if you are unlucky enough to also have one of these next to the gearbox you must also unlock that bearing as well)

    Slide out the bearing and shaft and slide off the sweep cams careful they don't get caught on the switch levers... make sure you don't mix up the cams, you should not have to remove the gearbox to do this.

    Then take it to the bench and remove the shaft from the bearing by unlocking the collar and turning it until it is free, this is what locks the shaft to the bearing. You may need a punch to break it free. During installation make sure this collar is fully on the bearing before turning it to lock the shaft, if it is not the shaft will not be locked and can slide inside the bearing.

    Slide the locking collar then the bearing onto the new shaft and take it back to the machine.

    Installation is pretty simple, basically just the reverse. Usually this job takes maybe 30 minutes to do. Just make sure when you slide the sweep cams back on the shaft that they are in the correct position and when you slide the shaft into the gearbox grease the splines first and make sure you have enough shaft on the end where the crank goes to properly align it, when you are happy with the position of the shaft, lock down the bearing, attach the crank arm, and setup the cams again.

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    • #3
      Thx TJ
      Like I said ...looks easy enough
      Go Pirates

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      • #4
        Yeah once you get into it you'll see it's not bad at all.

        I should mention that before you unbolt the bearing flange from the machine, after you have slid the cams over, that would be the best time to unlock the locking collar bearing as it will be easier with the shaft being held in position in the gearbox, you may have to crank the motor to get the set screw/punch hole around to face you
        Last edited by Tablejam; 07-05-2012, 05:57 PM.

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        • #5
          29 years - never replaced one

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          • #6
            Keep the bolt tight and the keyways will stay solid.

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            • #7
              Originally posted by 8270king View Post
              29 years - never replaced one
              You dunce....PLEASE insert foot NOW.
              70's MP/PBL/LBS,Q-Score
              Prolane Walker sport

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              • #8
                lol

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                • #9
                  Jerry, the part number is 070 001 699 in case you don't have a spare. you're probably gonna need one soon now!
                  Regards,

                  Billy T
                  bthompson@qubicaamf.us

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                  • #10
                    Yeah good on ya Jerry, you KNOW you just put the kiss of death on yourself, now don't you...

                    I have a spare sweep AND table drive shaft for one of those "just incase" moments we always hear about....
                    AS REQUESTED....The all new and VERY improved "super cool" Pin_Head with super hip shades.....

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                    • #11
                      Ive had to change 3 sweep drive shafts and i believe 2 table shafts in my center and thats just in the past 2 years. You guys make me jealous
                      Giving bowlers less to complain about, one lane at a time

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                      • #12
                        I've changed more than that. I don't like doing table shafts very much, especially when the machine still has the mother-fu****g bearing next to the gearbox, that doesn't go back on.
                        Last edited by Tablejam; 07-06-2012, 10:19 PM.

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                        • #13
                          OR you have a catastrophic brain malfunction like I did whilst changing a table shaft....i forgot to loosen the grub screw securing the home encoder disc and couldn't work out why it wouldn't come out while I was whaling on it with a copper lump hammer... LOL I did however notice once the home disc was bent like a banana... WHOOPS!!! never did THAT again ....
                          AS REQUESTED....The all new and VERY improved "super cool" Pin_Head with super hip shades.....

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                          • #14
                            I started here in '75...haven't replaced one yet.

                            Table shafts..5..6 in 36 years...
                            I never had a "10" ;..but ,one night after closing,..I did five " 2's" !

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                            • #15
                              4 years 3 table shafts and 1 sweep shaft
                              Sometimes we have to do stuff to get by....Just go back and do it right when the "by" has passed!!

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