Machine Breaking 1 to 1

[emcnelis]

I have a pinsetter that has broken the 1 to 1 twice in the last three or so years. We replaced it about a year and a half ago and found a broken key and a wallowed out keyway along with it. I have now noticed in the last couple of months that the 1 to 1 is jumping again. I am only assuming at this point that it is the same issue with a broken key. So, I am wondering if anyone can steer me in the right direction as to what could be causing it to break multiple times. I had issues with this particular lane breaking the deck lowering hook cam follower in the past, could this be related as the 2 to 1 is driving the 1 to 1 and it could possibly be getting some of the effects of the bind through the gear train?

[sboring1977]

What size pulley are you running on your 1hp motor, if its the A2 pulley I would look into slowing the machine down to at least Jet Back speed. This might help the issue

[Roscoe]

Did you check the deck jam micro to see if it had the shutoff assist spring and the new style soft rubber boot (yellow)

[emcnelis]

I slowed my machines down to A speed a year ago or so. Roscoe, do you just mean the small spring that wraps around the bottom of the boot? Also, I have never seen a yellow one, all mine are the black ones, will the yellow soft ones improve functionality?

[Roscoe]

Thats their intent. The spring goes under the boot, large end down, small end wrapped into the small groove in tip where a small snap ring was originally installed which is removed for the spring install. The yellow booted micros already have the assist spring installed from the factory. Both are a must for jam switches.

[sboring1977]

Hvae you changed your jam tube? If so does the current one have two springs in it or just one. I have seen where if there is only one spring that there's not enough tension on the cable and it can cause it to hop off the perch on the rear of the deck lift shaft. Just a thought

[Kanga (James)]

When you've replaced the gear and shaft, has the gear been a press fit?

[Rayman]

I'm with Kanga. I've seen shafts and gears with almost a slip fit. I send 'em back. Even the ones that do fit correctly, I take them to a machine shop and do a light 'spline' style knurl job on them. Helps the key to keep the gear in place.

[Popeye]

I have a pinsetter that has broken the 1 to 1 twice in the last three or so years. We replaced it about a year and a half ago and found a broken key and a wallowed out keyway along with it. I have now noticed in the last couple of months that the 1 to 1 is jumping again. I am only assuming at this point that it is the same issue with a broken key. So, I am wondering if anyone can steer me in the right direction as to what could be causing it to break multiple times. I had issues with this particular lane breaking the deck lowering hook cam follower in the past, could this be related as the 2 to 1 is driving the 1 to 1 and it could possibly be getting some of the effects of the bind through the gear train?

Did you just replace the key?

[emcnelis]

We replaced the entire assembly with a brand new one from bowl mart. I did change out the jam tube recently when replacing all 3 deck cables but I just checked and there is indeed 2 springs in there. As for the jam switch boots/springs, I will definitely be looking into ordering some of those. I will also be taking note of all these suggestions for when it comes time to change this guy out again. I know I have some time as its not too bad as of yet. Thanks a lot guys.

[SoCalTom]

Carefully watch the motion of the moving deck when the pinsetter cycles. If it "slams" to the rear, it could be caused by the wrong 1to1 (moving deck/scissor) cam. There are different styles. Each cam is specific to the type of machine.

12-100828-000 for machines with a lowering link
12-102794-000 for machines with a scotch yoke

It's been years since I wrenched on a pinsetter; but, I believe that there was a third moving deck/ scissor cam. It had something to do with the serial number of the pinsetter. I could be off-base on this; and apologize if I am incorrect.

[House]

SoCalTom, the other lowering link cam is 100310 cam. its a press on hub with sharper cam lobes than the 12-100828-002 cam.

[Steve Stafford (JBEES)]

Carefully watch the motion of the moving deck when the pinsetter cycles. If it "slams" to the rear, it could be caused by the wrong 1to1 (moving deck/scissor) cam. There are different styles. Each cam is specific to the type of machine.

12-100828-000 for machines with a lowering link
12-102794-000 for machines with a scotch yoke

It's been years since I wrenched on a pinsetter; but, I believe that there was a third moving deck/ scissor cam. It had something to do with the serial number of the pinsetter. I could be off-base on this; and apologize if I am incorrect.

The differences in these two cams will not effect the keyway or the key. These two cams are the different at the section that is just past 270 degrees as the movement of the moving deck needs to be different as the speed in which the deck rises is different between scotch yokes and lowering links. Hope that helps...

We replaced the entire assembly with a brand new one from bowl mart.

I do not know anything about Bowl Mart...do they sell rebuilt units or 100% new units?

[Wookie8662]

Also, check for pinchasers clearing jams by manually operating the motor contactor by hand.
(This happens more than I want to think about).

[PJ]

[QUOTE=Steve Stafford (JBEES}
I do not know anything about Bowl Mart...do they sell rebuilt units or 100% new units?[/QUOTE]Both and some decent prices. http://www.bowl-mart.com/items/pinse...ck-a2/list.htm