This illustrates why you shouldn t leave the key in a mortice lock.
Jammed mortice lock back door.
Slide in the card forcefully and play with it a bit while shaking the door a bit too at the same time.
Consider covering the area of your door around the lock to guard it from stray graphite particles 4 inject some powdered graphite into the lock.
Check the alignment of the deadbolt against the strike on the jamb if the lock is difficult to turn when the door is closed or the door doesn t lock at all.
This will hopefully force back the latch and the door will open.
Squeeze the bottle gently to release a few puffs of powdered graphite into the lock.
With the jammed one there is no or very slight resistance for a quarter turn then a complete block.
The fix in instances with a door latch stuck because it is jammed by rust and other materials it is always best to disassemble the lock and do a bit of cleaning.
If you do not have a proper broken key extractor you can use a jigsaw blade or a pair of tweezers.
The first thing you can try for opening a jammed latch is to slide a plastic card e g.
Use a file to widen the hole on the strike or remove the strike with a screwdriver and reposition it on the jamb.
Soak your door lock in kerosene for 24 hours if it isn t attached to a door and has been rusted shut.
With another mortice lock i have chubb again i believe when unlocking there is steady pressure when the key engages for half a turn then it unlocks.
A broken key extractor is one of the easiest ways how to fix a door lock that is jammed in this way to open.
This illustrates why you shouldn t leave the key in a mortice lock.
Remove the cover or faceplate of your mortise lock or surface mounted rim lock to repair it.
Wiggling the door when turning the key did not work.