What have I missed?

[Dutch]

I have a machine that drops the head pin every 15-20 frames. The pin is always lying on the deck with the head pointing toward the bowlers, so I assume it’s falling forward.

I’ve been working on this for a couple of weeks now & I’m running out of things to try. This is what I’ve done so far:

<ul>[*]Adj cup forward &amp; back[*]Cup width[*]Changed cup[*]Changed pins[*]Table height[*]Table level[*]Table adj's (toe-in)[*]Loosened yoke shaft springs[*]Lubed everything (yoke legs, shifter, rod ends, etc)[*]Adj RSC's[*]Adj shuttle[*]Cleaned bin &amp; shuttle[*]Lightly oiled bin, shuttle &amp; cup[*]Checked table drive assy &amp; entire front end[/list]

I really wish I had a camera &amp; VCR to put on this thing. It won't screw up as long as I stand there watching it.

[talkintrash]

Re: What have I missed?

Anything wrong with the pindeck...we had a problem like that a while back (7 pin wouldn't spot because the laminate on the pindeck peeled up on that side).

Is the pin hitting anything on the table? (rsc table link, table casting itself, etc...) Has the table been flagged?

[Ar Rar]

Re: What have I missed?

Two things to check: 1) that the pin shifts fully forward in the cup after the shuttle operates. If not, its going to be seating while the table is descending; 2) the problem may be in the bin. When the 1 pin leaves the distributor, the head glides over the top of the #5 butt plate. On some machines you can get a porpoising action where the head bounces up, allowing the bottom to get caught on the shuttle causing a misfeed.

RR

[Dutch]

Re: What have I missed?

Pindeck is OK &amp; table isn't perfectly flagged but it's within ½". That's close enough for me.

RR, You might be on to something. I'll see if there's enough clearance to tilt the cups forward when their horizontal. I'll also check the dist centering.

By the way, I added a couple of things to the original post. My mouse got a little rambunctious on me &amp; I didn't get to complete the post properly.

[JimDorsin]

Re: What have I missed?

Dutch, How about the Tie link bushing and pin?? If you have play here, the cup will never be at the same angle at spot???

[Coors]

Re: What have I missed?

pin falling over, has to be either table not getting low enough, or pin hitting on heel. tilt front of table down a turn or two using table tilt rods. and shorten the set screw for the toe in. think ya cant see the forest cuz of all the trees in your way lately. either that or you've been in virginia city lately. also remove your cup pads on the head pin [img]/content/btubb/images/%%GRAEMLIN_URL%%/usflag.jpg[/img]

[*70*PinMonkey]

Re: What have I missed?

Maybe a long shot, but check the table leg bearings and/or counterbalance springs, these are two areas that change relative table height frame-to-frame. Very small changes, mind you, but this is a sporadic problem, no? If nothing else works, just take the cup off and leave it off. The head pin is overrated anyway.

[talon1189]

Re: What have I missed?

Ajust the #1 pin funnel at the backside(toward the rear of the machine) down 1/4" so the pin is pushed forward more [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img] It does not sound like the pin is dropping consistantly in the cup the same everytime.

[Tall Paul]

Re: What have I missed?

Check the bearings in the big clevis for the table drive. Could be binding up and not letting the table run all the way down.

[Tall Paul]

Re: What have I missed?

Check the bearings in the big clevis for the table drive. Could be binding up and not letting the table run all the way down.

[V/E Jack]

Re: What have I missed?

Check the rubber washer that is used for the width adjustment, if it's sticking out enough it will cause the pin to hang up in the cup.

[Tablejam]

Re: What have I missed?

the tie link and bushing would not affect the head pin it would affect the 2-3 4-5-6 and 7-10 shafts since they are connected after the #1 shaft and the #1 shaft is the shaft that is rotated by the link at the front of the table yoke-know what I mean?

[Clutch Plate]

Re: What have I missed?

Originally posted by TABLEJAM:
the tie link and bushing would not affect the head pin it would affect the 2-3 4-5-6 and 7-10 shafts since they are connected after the #1 shaft and the #1 shaft is the shaft that is rotated by the link at the front of the table yoke-know what I mean?

<font size="2" face="Verdana, Helvetica, sans-serif">Yep, I know what you mean.


I tend to agree with Tall Paul, you done most everything and are still having head pin fall over. Possibly clevis bearings, or stiff table drive assy. Make sure table drive assembly isnt too far onto table shaft, that could bind clevis rod end.

Keep us posted.

[tenpin]

Re: What have I missed?

maybe its the cupliners or a lack there of, personaly i think its better without liners. or maybe the cup is twisted slightly,this does happen sometimes from allthe abuse from pins,its kinda hard to see in the machine thats why it usually goes on undetected for a while.

[tenpin]

Re: What have I missed?

ooops!i see you changed the cup already...what was i thinking.dutch i'll try again later hehe.