Core Inspection and Maintenance

Any dignified locksmith technician with many years of experience in the fields with I-cores locks will inspect a core before pinning. A new core may have factory burrs within the chambers. Older cores will have burrs, harmful foreign objects and a good amount of dirt, grime, filth and other forms of "junk" within the chambers. Inspecting each chamber, one at a time separately, the hole should be "flossed". You might clean the chamber using a small shaver brush. You can see how the pins fall into each chamber. If an older cores were misused before, it may turn one of the chambers to not function anymore. If this situation, it will have to be decided if to dispense the core or not.

An I-core should be lubricated only if absolutely necessary. Each lock manufacturer has their own recommendations regarding the lubrication of their products based on the lock type. Some Large cylinder manufacturers use white lithium grease, WD-40, air filter lubricants, flaked graphite, powdered graphite, etc. It is important to remember, never mix dry powdered lubricants with wet spray lubricants. The only lubrication that should be used in an I-core is dry Teflon powder. It is not recommended to use Vaseline, motor oil, canola oil, WD-30, grease, lock-ease, etc. Because these pins are smaller in width and diameter, they would most likely stick. If you wish, use the Teflon powder only sparingly when you pin a chamber or maybe when keys are being tested.

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