Tuesday, October 25, 2011

Lock Cylinder Spins in Circles and Will Not Lock or Unlock Door

When you insert the key into the lock cylinder, only the plug into which the key is inserted is supposed to turn, thereby unlocking the lock mechanism. However, sometimes a set screw comes loose and the entire lock begins to turn in the door. Here is what you can do to fix this and save that $75 locksmith fee.
  1. Look at how you neighbor's lock cylinder is situated on the front door. On most doors, the key is inserted with the cuts of the key facing up. It is in this 12 o'clock 6 o'clock configuration that you want your lock to conform to.
  2. Unloosen the three Phillips screws on the side of the door where the lock is located. Pry this plate off if it is tight.
  3. Using a small flat head driver, further unloosen the countersunk set screw opposite the lock cylinder. Do not remove it, just loosen it. Turn the lock cylinder to the proper position. Tighten the set screw.
  4. Sometimes, however, you will have to unloosen the two large screws at the top or bottom of the main bolt lock body in order to give the cylinder some wiggle room. When all is set into place, tighten everything. Reattach plate. Test keys and locks. While you are at it, shoot some WD-40 into the bolt.
  5. Also, you will not be able to turn the cylinder if your key is inserted into the lock and turned. The reason is that the cam on the back of the lock is jamming the lock.. If your key is inserted into the lock, you will to turn the cylinder towards where it should be while trying to gently turn the key to where it should be when inserted. You just have to juggle this to get it where the key will come out. Remember, if the key hole is not set to the correct clock position, the key cannot be inserted or retracted.

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