Wanted to share with you an 'Oldie but Goodie
'DIEBOLD 900 Series
I'm identifying this one as a very early version in the 900 Series (produced from 1954-1970). But corrections are welcomed!
NOTE: The dial, drive cam, and homemade spline key are NOT ORIGINAL to this lock. But the odds of me finding these
pieces or a cover plate (also absent) are probably pretty slim. So I figured it's time to get it running with what I have.
More clues as to its' age?... there is no re-locker of any kind, nor is there a ball detent to help stabilize the bolt.
Ever wonder just how much is too
Yeah, I'd say this is a bit excessive on the lube. Any more and this thread's gonna be XXX. lol
In fact, I didn't even realize there was a dial ring bushing separate
from the dial. It wasn't until
I had chipped away most of the grease when I realized it had shifted and it could be pulled off.
Took a while, but here it is all cleaned up and ready to be properly
lubricated. Didn't think to take
another picture after I greased it, but if I had it would look nearly identical to the above photo.
I use AeroShell 22 Grease. A very thin, nearly invisible layer on both
will do just fine. This dial will now run smooth and true for a long time to come.Group2 ... 3 wheel ... key change ... spring-loaded fenceCONTACT AREAApproximately 7 incs wideLCP
88 . . . . . RCP
95ROTATIONAL CONVERSIONunable to reliably determineREADINGSLEFT
contact point ONLY
...taken in tenths
every 2 incs
Many of the locks throughout this thread were manipulated by focusing on the RCP.
LaGard, Ilco, Mosler, S&G, etc... these locks all have what I call a 'normal' drive cam.
The right-hand side of the cam's gate has a gradual slope, allowing the lever nose to
ride up & out more easily when being locked. Therefore the RCP gives us more info.
Looking at the U-shaped gate on this Diebold's drive cam, both sides are rather steep.
If you look closely though you'll notice one side (left) is slightly rounded in comparison
to the other - that's where we'll focus our efforts. And by the way, you might approach
an old Diebold dial and think you have this all figured out... when on the other side of
the door lurks a 178-23 (which uses a normal drive cam AND LaGard type wheels)!
Sorry to throw a wrench into the mix, lol... but thought I'd keep ya on your toes
Another thing; One of the first things I do when I sit down in front of a Diebold is lower my expectations.
Generally (but not always
) the rate of change in your readings will be minute with these. So we want to
change our mindset to view even the smallest differences as relatively large fluctuations. Tiny=Large.
My readings are usually taken in tenths. You might read in eighths. These are two slightly different
scales, but we can expect roughly the same thing. I'll
be expecting at most, a 1 or 2 tenths
rate of change... you
will likely see a rate of change of approximately 1/8, give or take.BINDING ORDER3 - 2 - 1UNKNOWN COMBOL39 - R88 - L29
The first spin (AWL) produces a promising gate (28.5). The other area (55-90) actually provides for some good discussion.
Looking for the best reading
our eyes are naturally drawn to 70. But if we take a look at this area again, but with something
else in mind (looking for the greatest rate of change
) then we must also consider 90, where a change of 2/10 has occurred
Neither of these (70,90) are confirmed nor discounted at this time. We just dunno. So let's focus on what we DO
know... 28.5(the portion to the left in the below graph)
shows my isolation attempt to tag 28.5 to a wheel.
I chose to use 70.5 (best reading on graph) as a window. Parking wheels 1&2 there, I run w3
by itself through the area of 28. The gate does show up and I can successfully tag 28.5 to w3. - - R28.5
Had it not
shown for w3 I would have continued isolating wheels.
Wheel 2 next, then finally w1... always leaving the others at 70.5(the portion to the right in the above graph)
I hoped running 1&2 through the area (55-90) would now give me
something a little more definitive, considering w3 was now at its' known gate. But I was NOT expecting it to be
quite so obvious! lol. An enormous gate sig appears at 88. It jumps by 1/2 an inc then plunges back down 6/10.
Again, I'm looking to use isolation as a means for tagging this gate to wheels 1 or 2.
I focus on isolating w2 first. I want to take 3 readings through the area at 84, 88, 90.
The way in which I want to do it though essentially leaves me with a L-L-R configuration.
I want to park w1 at LEFT 70.5 ....but I also want to run w2 LEFT through the area of 88.L70.5 - AL - R28.5
Why am I being so picking about w1? Wouldn't it be easier to just park it with right rotation?
1. The good area I'm looking to park w1 within is only 1 inc wide (70-71).
2. We know w1 always has the largest rotational difference of all the wheels.
3. From the start I was unable to determine exactly what these differences were.
I'd rather just alleviate any doubts by placing it exactly the way it was originally found - left.
4X LEFT......70.53X RIGHT....80
The simplest way to look at this is to consider our 'target number
' for wheel 2 (LEFT 84).
After placing w1 @ LEFT 70.5, we're FORCED to pick up wheels 3 & 2 with RIGHT rotation.
That's ok! Go ahead and pick 'em up with right rotation. Continue around until you've PASSED
the target number (84) and stop at, lets say 80. Go LEFT, pick 'em BACK up and bring em to 84.Summary: Pickup wheel(s) and bring them beyond the intended target using the undesired rotation.
Then switch directions to pick them up again and bring them to the target using the desired rotation.
I'm now set up to push w2 around left taking readings at 84, 88, and 90.
Naturally, w3 is brought to its' known gate (28.5) before each reading.
And w1 remains undisturbed at L70.5 throughout this process.
Reading peaks at 88 and I can now tag it to wheel 2. - L88 - R28.5
Spinnin' for the money now..... I cash in at 40OPEN: R40 - L88 - R28.5Some other Diebolds if you're interested
#11 Diebold 17823
#13 Diebold 177-23
#19 Diebold 177-39. .. ... ... ....Some Thoughts on Readings.... ... ... .. .
Recall my initial AWL gragh and the gate signature that was produced at 28.5
The photos below illustrate this gate as seen through the dial.
The first reading is taken with AWL 26 (prior to the gate).
The second at AWL 28 (gate is now under the fence).My
eyes identified these readings as 88 even
& 88 2/10
however might be looking at these right now
with a slightly different interpretation. 88 1/10
& 88 3/10
? After all, both readings are on the verge of being
the next division up. Point is, none of these views are incorrect... as long as
you stick to them throughout
the entire manipulation. If you're consistent with the identification of your divisions, fluctuations will show.
And we've all experienced what I call 'gray-area' or 'gray-matter'. This is when a reading lands perfectly
BETWEEN two of your divisions. Exactly between 1/4 and 3/8 for example... whatcha gonna call that
These are decisions that should be made before you ever start spinning, lest you find yourself in one
long drawn out debate that continues all the way around the dial
. Every dial and opening index can
pose new challenges. Spend whatever time necessary within an inc. Be decisive... then stick
Reading in tenths leaves less room for gray-area, but certainly doesn't alleviate the problem entirely.
I still sometimes end up in "the great debate." And then there's dials that don't take kindly to tenths,
and you're left working within the width of a human hair. Literally, lol. Sometimes reverting back to
eighths just makes sense simply because it suits a particular dial. Whatever breeds consistency.
Fluctuations are all relative to the footprints left behind us. We're constantly comparing our
current reading with the previous reading(s). Noticing these changes will be dependent on
our ability to call a reading what it is
doing so through the entire process.
Happy Spinnin' Folks