December 1 997
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PINBALL REPAIR •
• & MAINTENANCE •
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: PINBALL REPAIR :
V.2
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Together they cover nearly
every pinball made in the
coin-op games industry from
1986 to 1996. Modifications,
enhancements, troubleshoot-
ing, parts sources, replace-
ments and a ton of fixes by
easy-to-find symptom/solu-
tion format. Both manuals
designed to lay flat on the
bench for ease of viewing.
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... continued from page 9
keep the drill centered in the work.
fall out the lock turns with a big
screwdriver. The alternative is to
drill out through the back of the
lock. By drilling through we can
drill away the shaft that holds the
cam. Or we can drill away the
screw doing the same job.
Ace type locks can be a little
harder to drill out. On some the
face of the plug, the round dot in
the middle, is actually hardened.
In any case I would recommend
starting with a center punch. Give
your drill a starting point in the
metal. For the locksmith, they
make a special hole saw, just the
size to fit in the circular slot. It
saws away the tumblers. In the
Ace lock, when you look in the
slot, those are the actual tumblers
you are seeing.
While you could just chuck a half
inch bit into your big Milwaukee
impact drill and blow the poor
lock into pieces the brute force
way, I prefer to be a little more
patient. I usually start with a small
drill, like a 1/8", to drill a starter
hole down the center of the lock.
Fitting disk tumbler to lock
Holding tumbler inverted,
insert in slot opposite spring
... __________ ...
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Order Form
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This edge should line up
with edge of plug
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• 0 Pinball Repair/Maint $49
0 Pinball Repair V.2 $49
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• Please add $4.50 for S&H. ($11 via Air). •
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You can feel it bottom out at the
rear of the plug. I then go up a
couple drill sizes and enlarge the
hole. Ever larger drills and even-
tually the lock gives up. I find this
approach makes it a lot easier to
Please wear eye protection, the
drill will throw out bits of brass
and other metal. If you blow into
the hole to clear it, think where
the debris will go, yep, right in
your face.