Diebold 673000 group 2

[lostcombo]

I am very new to this hobby as a friend of mine asks me to cut open his lockbox as he forgot the combination. Told him I would rather try manipulating the lock instead. It is a Diebold 673000 group 2, with the bolt to the top. He thought the combination was stepped like 10-20-40, but have tried versions of this to no avail. Have been trying to graft the wheels for about a month now. Each graft is different and looks the Grand Canyon. The contact points as far as I can tell are 96 to 7. Is that to large of a span?

Thank you in advance for any suggestions.

[Visitor]

Not particularly but it could be closer with more practise.

Try dialing your first known numbers and try to graph the 3rd, if you think its 10 and 20 dial those in and try graphing it. I would guess the 3rd number would be 30 rather than 40. Make sure you are resetting the lock properly before dialing in a combo.

To go from no experience to opening this may be a long shot but if you're graphing you must have already done a good bit of research.

[lostcombo]

Thank you for the reply. I have done some research. Watched Lock Manipulator's vedios and bought his book. Still not sure how to park wheels 1 & 3 to read wheel 2 though. I'll keep trying.

[Alexander Mundy]

You can't literally park wheel 3 since it is the 1st wheel picked up by the cam. You have to park 1 and dial 2 & 3 over and over.

[MartinHewitt]

Parking means to position a wheel at a certain number which is not known to be a gate. If W2 is graphed with W1 and W3 parked, then W1 needs to be positioned only once, while W3 must be positioned for every point on the graph.

[lostcombo]

Ok, So I ran my (many of first grafts) first graft and did the Hi Lo test and it can out to be wheel #1 at 10.5. Set up to look for wheel #3 by dialing #1 > 10.5 , parked #2 > 0 and graft #3. It came out as a flat line, no highs or lows. So now set every thing up the same but with #2 > 25. Graf of #3 looks like a moon scape. Have not been able to find a center node on any of the RCP"s. Will graft again with #2 at 50 and 75 to see if I can find a low spot on #2.

Am I on the right track here? I would hate to cut open the back of this box.

BTW the decal on the front of box says DIEBOLD MOSLER SECURITY. I was able to put a bore scope through a mounting hole in the back of the box to get the model # and group 2

This is my frist time ever trying to open a combination lock with out the combination, so am happy for all the help I can get. Thank you all.

[Alexander Mundy]

I've found that usually (but not always) when W1 indicates first W2 is next to indicate. That most likely is because the fence would be slightly sloped and touches W1 first then W2 then W3. I've found that the odds favor W3 indicating first and if not then W1 indicates first. I have 1 stubborn lock that W2 indicates first.

[MartinHewitt]

Can you see inside the change key hole?

[Visitor]

If you can see the the back of the lock you should be able to see in the change key hole and open it by lining those up on the wheels to get a change combo.
Edit, sorry just noticed Martin was getting at the same suggestion.

[lostcombo]

I would like to thank everyone that gave suggestions on how I might approach this lock. I finally had to drill a small hole in the back of the box, take the lock cover off and watch the gates aline. Every time I started a new graft it came out differently. now that I have it open, I took the lock apart and found that two of the wheels where free floating, as if some one had tried to change the combination with the cover off. Not sure what the last owner tried or not. Reset the change cams and then rest the combination. Everything seems to work find now. Welded up the hole In made. Now I can practice with this lock.

Sorry that I took so long to reply. My computer screen crashed and had to take it to shop for repair.

BTW the only things in the box was the change key, a dial lock and key and the mounting hardware.

[MartinHewitt]

Great, that you got open this box with a basically broken lock with minimal damage.