"Can I change the combination on my mechanical safe lock?"
We get this question from time to time, and the answer is yes you can, but they are tricky if you haven't done it before and know what you are doing.
Getting it wrong means you'll have to take the back of the lock body off and re-align the entire mechanism. Plus, regardless if you successfully change it or not, you void any factory warrant the lock has.
It's a detailed process and we really, really recommend you have a locksmith do this for you. That being said, if you still want to attempt it, the instructions are below.
Disclaimer: T&T Liberty Safes is providing the instructions given by Sargent & Greenleaf for models 6741 and 6730, both models used by Liberty safes. We are not responsible for any issues that arise from someone attempting to change their lock combination on their own.