How to Clean Your Deadbolt Lock

What You'll Need
Old Toothbrush
Canned Air
WD-40 or other silicon or graphite lubricant

If the deadbolt lock on the door to your home is hard to open or sometimes gets stuck, you may need to replace your door key because it has become worn and no longer correctly manipulates the pins and tumblers inside the lock.

However, a deadbolt door lock may also become hard to turn or open when a significant amount of dirt, dust and grime has found its way into the locking mechanism of the lock. When this occurs, you will need to take the deadbolt lock apart and clean it. Cleaning out your deadbolt lock is very easy and can be done in about 30 minutes. The following provides a guide on how to clean your deadbolt lock.

Step 1 – Remove the Deadbolt Door Lock

Take your screwdriver and remove the two set screws on the inside cylinder of your deadbolt lock. Then remove the inside and outside cylinders of the door lock to expose the deadbolt lock assembly. Remove the dirty deadbolt lock assembly from the hole in the door and also remove the bolt.

Step 2 – Blow the Dust out of the Deadbolt Lock

Take your canned air and blow away any dirt and dust that has accumulated inside the inner and outer cylinders of the lock. Also blow dust out of any pin holes in the bolt as well as the locking assembly. When using canned air to blow out dust from your lock, make sure not to hold the straw on the canned air too close to the metal of the lock. Canned air releases moisture that may build up on the lock and cause rust later.

Step 3 – Brush away Dirt and Grime

After you've blown all the dust off the lock, take your old toothbrush and scrub away any dirt or grime that remains. Make sure that the toothbrush is dry and never use water when trying to clean your deadbolt lock. Continue scrubbing all the pieces of the lock until they are free from dirt and grime.

Step 4 – Blow the Remaining Dirt and Grit out

Again, take the canned air and blow away any remaining dirt and dust that was loosened by scrubbing with the old tooth brush.

Step 5 – Add Lubricant

Take your can of WD-40 or another silicon or graphite based lubricant and lubricate the key hole of the deadbolt lock as well as the locking mechanism itself. Do not saturate the moving parts inside the deadbolt lock. Rather, simply add just enough lubricant to make sure that they all move and turn smoothly.

Step 6 – Reinstall the Deadbolt Door Lock

Reinsert the bolt assembly and the bolt of the deadbolt lock into the holes in the door. Then carefully align the inner and outer cylinders on both sides of the door. Make sure that the cylinders match up with the gears and slots of the lock assembly, and then secure the two cylinders together with the set screws.