They are often used in higher end doors because steel mortise locks are more secure than the cast aluminum alloy versions used in many patio doors.
How to fix the patio door lock.
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.
How to fix a door lock that is jammed due to freezing comes down to the type of freezing.
Apply a lubricant to both upper and lower tracks to keep the door hardware clean and operating freely.
The newer versions have the same handle on both sides.
This sliding glass door lock was not working.
These are the easiest to replace because most of the time you just have to pull out 2 screws remove the old handleset and bolt on a new one.
If you live in a windy area place a heavy object against the door or use tape to keep it from opening up after you ve removed the lock.
Turn the patio door knob up and down to inspect it for foreign objects dirt or rust.
Try to lock the patio door.
Donations appreciated click in upper right corner info circle.
The lock is built into the handle.
It could be that the external section of the lock is frozen up which prevents you from even gaining access to the keyway.
Make adjustments to the latch adjuster screw as necessary until the latch catches properly and locks the patio door.
Clean the door knob and lock with a degreaser and a wire brush.
Sliding glass door locks such as the steel mortise style locks shown on this page are used in wood vinyl and aluminum patio doors.
The picture above shows an 070001 model lock.
In addition to cleaning and lubricating sliding door tracks you want to lubricate the door lock.
If it is loose or has slipped out of the mortise place it back in the mortise and tighten the screws with a phillips screwdriver.
Take an allen wrench and loosen the set screw under one of the handles.
Step 4 finding a replacement.
Another variation occurs when the internal mechanism of the locks is frozen.
It did not latch shut.
Spray lubricant onto the entire knob and lock assembly for better operation.
Locks can essentially be frozen in two different ways.
Two screws on the end of the door secure the latch.
Shut the door and try to lock it.
The door originally came with a temporary handle which is a square rod that is bent 90 degrees.
Have one person go to the other side of the door and hold the handle.