Combination door lock

[dazza]

Hi

I have a few combination door locks from a old demolition job of a school here in the U.K that i worked on. I am now wanting to put one of the locks on a door but i want to change the combination to my own number. When i have looked in the back of the lock i can see the old 4 numbers and one letter that was the old combination because they have been tipped with red paint on back of button. Instead of trying to find combination of old number sequence i would like to use my own numbers.

So if anyone could give me any info how to change combination that would be great or how to tell what order the combination goes.
The lock has numbers from zero to nine and letters x,y,z, and c for cancel

Here is a pic of the same sort of lock


I also have a mechanical combination lock but i think the combination lock in picture above look better for a inside home door.

Thanks

[EmCee]

Discussion of combination locks is limited to the advanced forum and to my mind that includes methods of determining the previous code - even for this lock.

To change it, turn it upside down so the pins on the back are facing you. Press the 'C' key and hold it in all the time while using needlenose pliers to remove each of the red pins - noting the shape and which way they go in - then, still holding the 'C' key depressed, remove five black pins from the numbers/letter that you want to be your new code and put the black pins into the spaces where the red pins used to be, then put the red pins in the empty spaces left by the black pins. You can't change the 'C' key and for ease of remembering, all codes should start with 'C'.

Cheers...

[dazza]

Hi

Thanks EmCee

That info Given is all i want so to change the combo to my numbers . I was just puzzled because say if i wanted 1234x how do i make sure that 1 comes first in sequence. When i pulled one of the pins out i could see one-side had two notches and other-side one notch so i will look at shapes.

The codes were written above each door on wall but the doors was all taken off and put in a corner for me to collect locks this was done on my day off from work and i wasn't pleased when i went back to work they had already demolished the building This was quite some time ago i am a bit of a lock-hoarder got quite a collection of new a used locks and old keys

Thanks again

[mh]

With this particular lock, the order in which the keys are pressed does not matter. See e.g. http://www.nokey.com/digcomloc.html

Cheers
mh

[dazza]

Cheers mh

Got my own combination now
The site you mentioned also has templates for fitting the locks which will come in handy when i fit another and there was some good info about changing lock direction left/right. The lock i am fitting is a latch-bolt combo lock.

Cheers for the help guys

[Rickthepick]

Iv noticed that this particular design is now being phased out with simpler options now available.
ERA for example now just have a rotational button basis that allows you to remove a plate and then choose your code by rotating the back of the buttons. Far easier as the older locks were a pain if you put the code pieces back in wrong or dropped them everywhere.

[dazza]

Iv noticed that this particular design is now being phased out with simpler options now available.
ERA for example now just have a rotational button basis that allows you to remove a plate and then choose your code by rotating the back of the buttons. Far easier as the older locks were a pain if you put the code pieces back in wrong or dropped them everywhere.

Rickthepick Exactly what i did

I was so eager to try new combo i turned lock around while back plate was off with springs and i pressed the C button to start combination and nearly all the pins dropped out But i managed to sort it out in the end. I have a ERA lock display board full of ERA locks thats in my attic will have a look to see if there is a combination lock on there.

Cheers