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AMI Continental Pin Wheel Slecting Problem

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shaun

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Apr 1, 2008, 8:08:52 AM4/1/08
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Hi
My Cont II has some problems pushing the pins out on selecting, the
pins seem to move ok, some are scratchy as they slide but none take
too much of a push, but often on certain points, the pin is not pushed
enough to stop the scan switches. Not sure if its the pins (I have
cleaned them in thinners and WD40 to re-lube) or the coil that pushes
the pins down, not sure how powerful that should be. If its low on
power, could that be the coil? To my mind the coil would either work
or not unless the volatge it was getting was low
Or will I have to take all the pins out, clean them lightly with fine
wet n dry and put them all back, not a job I'd relish!!
Anyone any ideas?
Cheers
Shaun

Joseph A. 'Tony' Dziedzic

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Apr 1, 2008, 4:59:46 PM4/1/08
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NEVER - absolutely NEVER - use WD40 as a lubricant. The stuff attracts dust,
gets gummy, and fouls up moving parts. The pins should NOT be lubed,
particularly not with anything petroleum based. Graphite might be acceptable,
but if the pin wheel and pin surfaces are clean the pins should move easily.

I'd suggest looking at the circuitry that energizes the pin transfer coils to
see if perhaps the contacts actuating that circuit are dirty or mis-adjusted,
causing either a weak or too-short pulse to the pin cancel coil. It's been a
while since I've looked at the wiring, but I believe the contacts are operated
by the record gripper cam ...

Joseph "Tony" Dziedzic

In article
<0ed68395-3196-47b8...@s19g2000prg.googlegroups.com>, shaun

Oldtimejuker

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Apr 1, 2008, 9:18:48 PM4/1/08
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On Apr 1, 3:59 pm, t...@dziedzic.us (Joseph A. 'Tony' Dziedzic) wrote:
> NEVER - absolutely NEVER - use WD40 as a lubricant. The stuff attracts dust,
> gets gummy, and fouls up moving parts. The pins should NOT be lubed,
> particularly not with anything petroleum based. Graphite might be acceptable,
> but if the pin wheel and pin surfaces are clean the pins should move easily.
>
> I'd suggest looking at the circuitry that energizes the pin transfer coils to
> see if perhaps the contacts actuating that circuit are dirty or mis-adjusted,
> causing either a weak or too-short pulse to the pin cancel coil. It's been a
> while since I've looked at the wiring, but I believe the contacts are operated
> by the record gripper cam ...
>
> Joseph "Tony" Dziedzic
>
> In article
> <0ed68395-3196-47b8-ac12-eac31f319...@s19g2000prg.googlegroups.com>, shaun

>
> <sh...@paradisii.co.uk> wrote:
> >Hi
> >My Cont II has some problems pushing the pins out on selecting, the
> >pins seem to move ok, some are scratchy as they slide but none take
> >too much of a push, but often on certain points, the pin is not pushed
> >enough to stop the scan switches. Not sure if its the pins (I have
> >cleaned them in thinners and WD40 to re-lube) or the coil that pushes
> >the pins down, not sure how powerful that should be. If its low on
> >power, could that be the coil? To my mind the coil would either work
> >or not unless the volatge it was getting was low
> >Or will I have to take all the pins out, clean them lightly with fine
> >wet n dry and put them all back, not a job I'd relish!!
> >Anyone any ideas?
> >Cheers
> >Shaun
Have you checked the 30 volt DC at the power supply ? A weak rectifier
could cause your problem. Ray

John Robertson

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Apr 1, 2008, 11:49:31 PM4/1/08
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As mentioned do not lube these (especially no WD-40!). It would be best
to take the entire pin assembly apart if it is at all gummy.

Do NOT sand any of the pins!

All you need is to clean them with some Varsol or similar solvent, then
dry and reassemble. Takes an hour or so...if you note where the select
arm and the pin drum line up you don't need to spend much time
re-aligning them afterwards.

I've started an AMI/Rowe page that might help you a little...

http://www.flippers.com/ami-rowe.html

John :-#)#

--
(Please post followups or tech inquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

shaun

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Apr 3, 2008, 4:28:41 AM4/3/08
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Thanks all food for thought, I was worried about WD40 as it does get
sticky with age, I'll maybe do all of these, take the pin wheel apart
and clean all the parts in solvent (while you can still buy it in the
UK!!), put it all back together, also check that 30V point as well,
the coil may be weak and if the pin is a bit sticky it would be enough
to not tap it through far enough, they seem to push them through part
way, just not quite enough sometimes...

On another note, I have been offered a straight swap for my very
presentable Wurlitzer 1080 in exchange for a really nice original
Wurlitzer 2000, I don't use the 1080 a lot (78's and all that) but its
a real beauty. I do though like the silver age but not sure if the 2
net out in value.....Any any burning thoughts?

Keith Stelter

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Apr 6, 2008, 9:42:54 AM4/6/08
to
If the 2000 is complete with the turning pages, I would make that swap in a
SECOND!
The model 2000 Wurlitzer is one of only 2 or 3 jukebox models that are still
holding or increasing in value, and they look and sound great.

"shaun" <sh...@paradisii.co.uk> wrote in message
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