How to Fix Sticking Door Knob Locks

A sticking door knob lock indicates a lubrication problem within the lock. A silicone-based lubricant was applied during manufacture, but changes in the temperature and humidity level along with frequent use cause the lubricant to evaporate or wear off. Repairing the lock involves removing the knob assembly, cleaning and lubricating the inner workings. Thereafter, you must perform regular maintenance to keep the lock in good working order.

Philips screwdriver
Toothbrush
Silicone-based lubricant spray
Paper towel

Instructions

- 1
  Unscrew and remove the trim screws. Insert the key into the keyhole, if applicable, and turn it 90 degrees in either direction.
- 2
  Press the tip of the screwdriver against the release button on the side of the knob post and pull the knobs apart and away from the door.
- 3
  Brush the knob hole clean with a toothbrush. Brush any loose debris from the interior of the knob assembly.
- 4
  Spray the interior of the knob assembly with a silicone-based lubricating spray. Wipe any excess lubricant from the knob trim with a paper towel.
- 5
  Insert both sides of the knob into the hole in the door and press together until you hear a click. Press the trim to the door and replace the trim screws.
- 6
  Remove the key, if applicable. Hold the bottle of lubricant up to the keyhole and press the button quickly. Reinsert the key and lock and unlock the door several times to work the lubricant into the assembly.

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