I am with Doug on the lube.
WD 40 stands for Water Displacement Formula 40 and was made to keep missile parts from rusting. It was not designed as a lube. It was just that everyone that worked in the plants took it home and used it for that…. and the following grew.
As for DIY of safe lock servicing:
1] Take lock apart taking pictures as you go so you KNOW how each part was before you took it off.
2] Clean all parts with a agent that will not harm them but will remove all grease, dirt and grime. It should be an agent that dries in a very short time but doesn’t leave a trace of itself.
3] Any bolt part on part movement is the location to where you are going to use a lithium or other really good quality (safe lubes are available) light grease in very small amounts. This would be just enough to see it but not enough to move on its own with gravity.
4] Any dial or wheel pack part you should apply the grease to your finger then rub between two fingers and then wipe just a bit to the part on part movement so you can feel it and see a sheen.
If the lock is in use (several times a day or more) then the lock should be serviced at least once a year. If the lock is only used every week or two (as it should be with a safe of this age and lack of parts) should be serviced once every decade or decade and a half. Servicing might damage/distort (rings, keepers, ect) parts if someone that doesn’t do it often preforms the work. Go slow and careful.
My preferred lube is Lock Saver lube and grease.
http://www.lock-saver.com/
———- Post added at 06:55 AM ———- Previous post was at 06:42 AM ———-
Rog wroteAlso, I’m thinking I might rebuild my safe to include an extra drawer or two, and an extra pair of lock boxes - any idea where I might find the keys and locks for such items?
Depending on one point here. Do you want a lock that looks and works like those you have or does it mater if it is a more modern lock? If you want like ones you have might be a problem as I don’t know of any that are made here or imported. Flat steel locks and keys have gone away as far as I can tell. Now you can still trip over them on ebay and might find enough for your project.
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