Pin Damage

[Adam_Davis]

I have 2 machines causing pin damage. I have checked:

Pit Conveyor
Lower Elevator Frame
Ball Wheel
Pin Wheel
Pin Wiper
Turn Pan
Cross Conveyor
Snubber
Turret Wires
Turret 5 pin chute
Spoons
Spotting Fingers
Deck Rollers
Deck Chutes

I have yet to find the problem.

Here is a pic of the damage...
[img]http://pic4.****************/VOL50/488633/642287/16485392.jpg[/img]

If you can not see the pic click here.

It looks like the pin is dropping down onto something sharp base first as all of the gashes are cut upward. I find alot of pin cuttings under the elevator frame between the pit conveyor and ball wheel, but I've looked in that area a thousand times. The lip in the back of the upper pit frame was sharp so I filed it down smooth, but the damage continues. I feel the damage is occuring somewhere else and the cuttings are migrating there via the pit conveyor. I have found no other signifigant areas of cuttings anywhere on the machine.

[Drillmn300]

Re: Pin Damage

Did you check the kickbacks for any nails that might be sticking out?

Drill

[Ed Fox]

Re: Pin Damage

Edge of the turret clutch?

Charlie [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img]

[gearhead]

Re: Pin Damage

Pindeck edgeboard screws?Make sure those puppies are tight,not just looking tight.
How about the ball wheel guards,are they in good shape?
Stationary deck have a loose bolt?(scissor deck).
Yes it can really suck tracking it down.,you'll find it.
Can't remember your entire post but how about the kickback is it metal,i had to grind off a ton of burrs on some once.,BAD burrs.

[TPJ]

Re: Pin Damage

Charlie nailed it on the head. You see how the cuts are rounded at the bottom. That is your turret clutch edge more than likely right at the nine pin.

[Adam_Davis]

Re: Pin Damage

Forgot to mention that I checked the kickbacks too.

I have sat and watched this machine for quite a while and every time the pins drop they clear the turret clutch by at least an inch.

[Roscoe]

Re: Pin Damage

BrunsAce:
Striking the turret clutch usually happens so fast, its hard to identify visually. One clue however, are shavings on and around the pulley, with the outer edge of the pulley showing white.
Roscoe.

[Adam_Davis]

Re: Pin Damage

In that case I'm pretty sure it is not the pulley. It only has a few flakes on it occasionally and mostly due to them being carried up the cross conveyor. The edge of the pulley is rounded too. I did that a while back just to be sure. And there is no white residue on the edge of the pulley.

[mainframe]

Re: Pin Damage

DO YOU HAVE GLUE ON DECK PADS OR THE ONES WITH THE MOUNTING STUDS/ THREADED RING? I HAVE HAD THE METAL MOUNTING RING CAUSE DAMAGE COMPARABLE TO YOUR PIC.

[bowlmechuk]

Re: Pin Damage

Hey - Brunsace, have a look at your deck, if you have trimmed buckets, the edge of the moving deck casting may be sticking out inside the bucket & as the pins drop in they may catch the metal, a long shot but worth a look, good luck & keep us all informed. [img]/content/btubb/images/%%GRAEMLIN_URL%%/frown.gif[/img]

[Adam_Davis]

Re: Pin Damage

I have the glue on pads.

I have trimmed deck chutes, but I've already been over that area. Will check it again this afternoon just to be sure.

[KL Kevin]

Re: Pin Damage

Ace:

Take a hard look at the edge of the turn pan cam, the old metal ones get real sharp over time.

Your marks look slightly too high on the pin, but it'll only take a minute to dismiss it as possible:

Kevin

[GRAMBO]

Re: Pin Damage

Another something to check.
Do your lower ball wheel guards have the button head allen bolts in them or has a regular bolt been mixed in?
Maybe pin hitting bolt head on guard.
Also check the front of the cushion well to see if the rubber has worn at the corners exposing the follower link allen bolts.
Graham

[plamorbowl]

Re: Pin Damage

I actually have the same problem with one of my machines. I am banking on the turret clutch, although I have no proof to that effect. The only tell-tale sign of the turret clutch is that there is an awful lot of chips on and around that area. Is the correct solution to move the turret wires away from the turret frame? I'm not entirely sure that it is only coming from the nine-pin side-- the eight pin side may be hitting as well. Any ideas?

[Adam_Davis]

Re: Pin Damage

Playmor..

According to your post you are seeing chips around the turret clutch. Odds are that's where your problem is. Other than adjusting the turret wires, loosen the spoons for the 8 and 9 positions. Rotate the 9 spoon as far toward the 10 as it will go, and the 8 as far toward the 7 as it will go. This will cause the pins to deflect away from the turret as they drop. Also I filed down any sharp edges around the turret just to be safe.

Anyway..

I have not yet found the sourse of the damage in my case. The turn pan cam is plastic so that should not be an issue. Cushion is in good shape. I found a crack in one of the ball wheel guards that had a slightly sharp burr on it. I don't see how this would cause the cuts to be in the area that they are, but I repaired it anyway.

Pin decks are "Armor Plate" with good edge boards.

The buckets have enough overhang to prevent the pin from contacting that edge.

I agree that this does look like turret clutch damage, but I have found no evidence whatsoever in that area.

I am about ready to dismantle everything that the pins touch and file down any edges I find. A new set of pins every 6 months aint cheap.

Will keep y'all updated.