1. Identify the Problem:
* Is it the deadbolt or the doorknob? The repair process will vary slightly.
* Where is the sticking? Is it hard to turn the key, the knob, or both? This helps pinpoint the source of the problem.
2. Gather Supplies:
* Graphite powder: This is the best lubricant for locks. Avoid WD-40 or other petroleum-based lubricants as they can attract more dirt and eventually gum up the works. You can find graphite powder at hardware stores, often in small cans or tubes.
* Compressed air: Useful for blowing out loose debris.
* Small screwdriver (or possibly Allen wrench): Depending on your lock, you might need to remove screws to access the internal parts.
* Toothpick or small, stiff brush: For cleaning out small crevices.
* Cloth or paper towels: For wiping up excess lubricant or debris.
* Optional: Lock de-icer (if it's a cold climate): Frozen moisture can cause similar issues.
3. Repair Process:
A. Cleaning:
* Remove the lock cylinder (if possible and you're comfortable doing so): This allows for better access to clean the internal mechanisms. There are many videos online showing how to do this for various lock types. If you're not comfortable with this step, skip to the next one.
* Use compressed air: Blow compressed air into the keyhole and any other visible openings to remove dust and debris.
* Use a toothpick or brush: Gently clean out any remaining debris from around the tumblers and other internal parts.
B. Lubrication:
* Apply graphite powder: Carefully apply a small amount of graphite powder to the keyway and any other moving parts. A tiny bit goes a long way. Too much can attract more dirt.
* Work the mechanism: Insert the key and gently turn it back and forth several times. This helps distribute the graphite. Work the doorknob as well.
* Wipe away excess: Use a cloth to wipe away any excess graphite.
C. Reassembly (if you removed the lock cylinder):
* Reassemble carefully: Put the lock cylinder back in place, ensuring everything is aligned correctly.
* Test the lock: Check to see if the lock operates smoothly.
4. If the problem persists:
* Try a different key: A worn key can exacerbate sticking problems.
* Consider a replacement lock: If the lock is old or severely damaged, replacing it might be the most cost-effective solution.
* Call a locksmith: If you're uncomfortable working on the lock yourself or if the problem continues after trying these steps, call a qualified locksmith.
Important Safety Note: Never force a lock. This can damage the mechanism and make the problem worse. If you're unsure about any step, it's best to consult a professional locksmith.
