How to install double hook mortise lock.

The method of installing a single hook mortise like our 82-218 and installing a double hook mortise like our 82-238 don't really differ all that much. It's more or less the same procedure. You just remove the inside and outside handles from the door, remove the old mortise lock, screw the new mortise lock in its place, and then put the handle back on. Can you specify where you're having trouble?

The turning mechanism is the square hole you see going through the lock in the center. The locking lever also goes through this hole.

As our friend from California mentioned, it could be that the 82-238 is simply not the correct replacement part. Is it identical to what you took out of your door? If not, show us a few pictures of the original part and we can try to find a replacement.

You will need to turn the square hole I mentioned with a screwdriver, just like how we show turning the slot in the 82-218 with a screwdriver. It functions the same exact way, the hole is just a different shape to accommodate a different style spindle.