What are the most common door lock malfunctions?
Let's call the client Paul. His lock began to work worse, but it was impossible to determine the reason by sensations. This is a common situation: one…
The client's name has been changed.
Let's call the client Paul. His lock began to work worse, but it was impossible to determine the reason by sensations. This is a common situation: one symptom can have several sources.
The door has to be pressed to close
Often the problem is related to the geometry of the door. Possible:
- subsidence;
- displacement of the response part;
- incorrect position of the crossbars.
In this case, the lock itself may be working properly.
The key became harder to turn
The reason may be:
- wear;
- pollution;
- key damage;
- internal resistance;
- door load.
The crossbars stopped moving normally
Here you may need to diagnose the lock body. Don't try to compensate for the problem by increasing effort.
The lock does not work well even on an open door
This is an important sign. If the resistance remains without contact with the box, the cause is most likely in the mechanism or cylinder itself.
Why the old advice “disassemble, clean and fill with oil” is not universal
Modern mechanisms vary. Accidental disassembly or improper lubrication may make the situation worse.