Trouble with mortise entry lock

711 Views 4 Replies 3 Participants Last post by kjmass1, May 1, 2016

kjmass1

Discussion Starter · Apr 29, 2016

My front door has a mortise lock set. The main latch works fine, however the built in deadbolt (top lock) is having trouble. I've tightened the 2 bolts as tight as I can, however the key lock won't stay tight, it will rotate with the key when turning. Something I'm doing wrong?

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Windows on Wash

· #2 · Apr 29, 2016

Could be stripped interior.

Best bet it to just pull the thing out and give it a tune up of sorts.

Once you pull it out, how they work makes perfect sense.

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oh'mike

· #3 · Apr 29, 2016

If you don't want to fix that yourself---most lock shops will rebuild those old units and send it back as good as new.

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kjmass1

Discussion Starter · #4 · Apr 29, 2016

Great thanks. I've taken apart smaller interior door ones but this one is a different beast. It must be stripped or somehow not catching the lock cylinder. I'll grab a couple more pics when o get home.

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kjmass1

Discussion Starter · #5 · May 1, 2016

So I removed the trim piece and discovered that if the cylinder was turned 7 times the lock worked fine. With the trim piece on I could only get 6 turns so I forced it a pipe wrench and now it works! Thanks.

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