by zeke79 » 28 Sep 2007 10:35
If the key is inserting hard then I simply use a small, I repeat small amount of graphite on the bitting area of the key. As stated, small amount is the key. I use a small make up brush my wife had laying around not used. I lightly dip the brush in the graphite, tap it several times on the graphite container to get rid of excess graphite on the brush. At this point dab the brush across the butting surface of the key. You should see very little to no graphite on the key. This will result in a key that inserts and removes smoothly.
If this does not work, completely strip the lock. Then clean each pin, springs, sidebar, sidebar springs, the plug and shell should be thoroughly cleaned also I use a toothbrush to clean the pin chambers in both the plug and the shell. Allow the parts to dry thoroughly. You can speed the drying process by using a hair dryer on low heat. Then reassemble with a light amount of lubrication of you choice. Only lubricate the plug and shell. Do not lubricate the pins themselves. This will allow you to later use a bit of graphite on the bitting area of the key if needed without gumming the lock up.
I find that if graphite is used PROPERLY it is a great lubrication for most applications. Limitations are environment based such as areas of high humidity, locks exposed to water on a regular basis such as a marine application, or areas that will result in saltwater spray. In these cases another form of lubrication should be used. I prefer to use a good dry teflon based lubricant or a standard silicone lubricant.
Hope this helps.
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