How to Lubricate a Lock


As lock-sets age, they require lubrication to continue functioning smoothly. Here's simple and effective technique for lubricating lock-sets.

Things You'll Need

  • Graphite powder
  • Uncap the tube of graphite powder and position it at the top of the key hole entry. Hold the tube at a 30 degree angle upward.

  • Squeeze tube twice to deposit graphite into the lock and tumblers.

  • Insert the key into the lock and turn it to open and close bolt multiple times in order to work the graphite into the tumblers.

  • If the key does not operate smoothly, repeat Steps 2 and 3.

  • Position the graphite tube above the bolt port and squeeze twice to release graphite powder into the seam between the bolt and bolt port.

  • Position the graphite tube on the side of bolt port and squeeze twice to release powder into the seam between bolt and bolt port.

  • Repeat Step 6 on the opposite side of the bolt.

  • Insert the key and open and close the bolt to deposit the graphite.

  • Wipe any excess graphite from key hole and bolt.

Tips & Warnings

  • Powdered graphite may be purchased at home improvement stores or on line at

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