A door that is sagging may cause the door strike to hit the strike plate to low not allowing it to spring into place.
Troubleshoot door lock strike wont slide.
Line up the back of the replacement door strike with the narrow opening in the body of the dishwasher.
Troubleshooting a stuck door latch.
Ideally the bolt should rest flush within the strike plate.
Unscrew the strike plate and reposition it.
Apply a lubricant to both upper and lower tracks to keep the door hardware clean and operating freely.
Realign adjustable strike plate.
This sliding glass door lock was not working.
If you are operating the lock on ac instead of dc or on half wave rectified dc transformer single diode the lock won t hold.
The locks strike plate has to be adjusted so that it lines up properly with the corresponding latch or door lock bolt.
It did not latch shut.
It needs to spring into the recess in the door strike to keep the door closed.
See the article adjusting door strike plates for directions on how to fix a poorly aligned strike plate.
From there try some lubricant silicone spray and graphite powder are my preferred lubricants for locks wd 40 will quickly dry and attract dirt.
Donations appreciated click in upper right corner info circle.
You can unscrew the door knob and remove both sides then unscrew the latch and pull it out of the door.
Place the top screw in and tighten it slightly.
Close the door and test the fit.
The cardboard should be exactly the same size as the strike plate.
Step 3 place the cardboard.
This gunk and grime can impede the movement of springs as well.
To correct the problem try loosening the strike mounting screw to see if the lock then holds properly.
The lock won t latch at all.
It s an easy fix.
For some door locks you might need to file off sections of the strike plate for it to fit properly.
In addition to cleaning and lubricating sliding door tracks you want to lubricate the door lock.
Door sagging out of square in frame uneven head margin.
If the strike is mounted too rigidly proper alignment can t occur and the lock won t hold.
Adjustable strike plate not properly aligned.
Try to open the door while it is shut.
You will need to simply take the lock off the door.
The best way to lubricate any lock is to disassemble it and use an aerosol lubricant to flush away grime and coat the moving parts of the lock.
The door is not meeting the weatherstrip evenly when it closes hitting the top or bottom first.
Realign reshim readjust lockside jamb so door meets weatherstrip evenly from top to bottom.
And if it still doesn t work it s probably time to go to the store to pickup a new doorknob.
The thicker the cardboard the harder it may be to cut but it could save you from having to use several pieces while packing it out.
