MORTISE LOCK INFO:
The key can be installed ABOVE or BELOW the handle on OUTSWING security doors.
When the lock is inverted it changes the locking function.
Viewed From Outside, Hinges on Left, Handle on Right = Right Hand Reverse (RHR)
Viewed from Outside, Hinges on Right, Handle on Left = Left Hand Reverse (LHR)
Viewed From Outside, Hinges on Right, Handle on Left = Right Hand Reverse (RHR)
Viewed from Outside, Hinges on Left, Handle on Right = Left Hand Reverse (LHR)
After you loosen set screws on faceplate, The cylinder can be
1. A key that fits into cylinder, that does not work with the lock - New key on old cylinder or Old key on new cylinder
2. Putting key 1/2 way into cylinder and turning
3. a slotted screwdriver,
The threaded cylinder has a groove down the side that the set screw fits into. The screw has to be removed enough for the cylinder to turn.
When reinstalling, the screw has to fit back into the groove to hold the cylinder in place.
Pay attention to the cylinder before removal. The new one screws in the mortise lock and the orientation needs to be the same on the replacement.
If the old lock has the cuts of the key pointing up or down - the replacement must be the same for the lock to work properly