and years ago in most areas graphite was a great CHEAP solution for lock lubrication. As for it working great in the past, I get that. This is a rare possibility unless there is a MASSIVE amount of use on JUST one side (again, as your inside cylinder isn't having any issues) Lastly, If that does NOT correct the issues, contact a Medeco authorized locksmith in your area to determine if there is some mechanical failure, worn keys, pins, springs, sidebar, etc. and be REAL careful to wipe off your key before putting it into your pocket. So don't plan on wearing anything light colored for a week or so. Keep in mind, that cleaner, along with traces of graphite will STILL stick to your key every time you use it for several days. If so, once everything is drained out / cleaned up as much as it can be, reinstall them on your door. Your key's will most likely work like new at this point. Once the cleaner starts running out clean, without much graphite in it wipe everything down and let the locks drain out as much as they will, wipe everything down again. From time to time, insert the key into the keyway, give it a jiggle, remove it and clean it with cleaner and wipe it off. if you're not, reverse that process as Americans mount their locks "upside down" according to Europe). once it stops running out dark, repeat with the keyway facing down (upside down if it were on your door, again, if you're in the US. Now, irrigate the cylinders with the cleaner, start with the keyway facing up (as if it were on your door, provided you're in the US) to flush out a good bit of what you've put in. I'd wear gloves, as you should with any GOOD cleaner, but also because it't easier to remember not to touch anything if you have the gloves on. Third, get plastic container large enough for the lock, a LOAD of paper towels and put on some clothes you don't care too much about. If you get any graphite on light colored carpet, tile, or wood, do NOT touch it, use a vacuum hose attachment to suction it up WITHOUT rubbing it in (unless you like graphite stains that will NEVER come out) and I'll warn you ahead of time graphite stains just about EVERYTHING and tends to go EVERYWHERE (another reason not to use it). Third remove the lock from the door, again be warned, This is most likely going to be MESSY if you've been using graphite. do NOT use cheap stuff like WD-40 or liquid wrench, as when mixed with graphite forms something the consistency of Elmer's white glue. I recommend Zep 45 NC or TriFlow from the hardware store. ![]() Get a good industrial grade cleaner/lubricant/protectant. Secondly, you're gonna have to clean that stuff out of there. It's just too easy to foul everything up, especially given the Medeco's pivoting pin design. any more than that and you're headed for trouble) and especially don't use it on a Medeco or other high security locks. ![]() 99% of people, including the very few locksmiths still heck bent on using the evil stuff, use entirely too much by a factor of about 10000% (the appropriate amount is, rub a pencil lead over a key blank, insert into lock, repeat twice, I'm NOT kidding. I mean take the can, and throw it in the garbage. The graphite made the problem 10 times worse.įirst off, get rid of the graphite. and that you had a little bit of dirt, dust, pollen, etc that was interfering with the outside lock cylinder. My guess on this one (without examining it) since the inside still works perfectly, it's not an alignment issue with your door due to humidity, house settling, etc.
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