Latch still not locking

Handy Person from Missouri

Dec 6, 2019 6:04 pm

Greetings,
I recently ordered, received and installed the Double Hook Mortise Lock. It installed easily and works as expected while the door is open. When I close the door and try to lock it, the hooks do not engage. I can't tell if the center button is no being pressed far enough, or is somehow being pressed too far.

Any thoughts on what could be causing this?

4 Replies

Dave Sr. from SWISCO

Dec 10, 2019 2:30 pm

I'm wondering if you have the 89-042 keeper and you are missing the "strike Plate" 89-043. Take a look at the list of replacement parts I posted on this page to see if any of these items is what you need.

Handy Person from Missouri

Dec 10, 2019 2:42 pm

The strike plate that's been there since day 1 is the same as 89-030.

I can order a new one, but I'd rather not if it isn't going to fix anything.

Dave Sr. from SWISCO

Dec 11, 2019 10:51 am

Ah, okay. If you still have your strike plate then I'm not sure what the issue may be. It could be a matter of a broken thumb lever. If the stem on the lever is damaged, it may not be throwing the hooks properly. I would remove the mortise from the door and try throwing it manually with a screwdriver to see if it works okay. If not, let me know.