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civex t1_itrn172 wrote

Video of problem: https://www.youtube.com/watch?v=LM7wKrtQRcs

Lockset in knob sometimes jams. Lock is a Schlage Primus. We have a deadbolt and knob lockset that are identical with same key operating both. The deadbolt never jams; the video shows the key in the knob refusing to turn. We've had a locksmith out twice, and he can't find any problem with the lockset and blames operator error, although the jam never happens while he's there.

In the video, my wife shows the jammed lock, then when I try it it opens fine - this has never happened before. It's always been jammed for both of us when it has jammed.

Any clues? Does the video show what we're doing wrong?

When the locksmith was out the first time, he replaced and re-aligned the strike plate, and the door closes much better. However, we're still getting jammed on occasions.

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Astramancer_ t1_itubdfj wrote

I have no idea if it will actually help your situation or not, but I had a similar problem where sometimes I'd have to jiggle the key around to get it to turn sometimes.

I lubricated the lock and it's been fine ever since. There was some buildup or something inside the lock that was jamming it up sometimes.

You want some sort of dry lubricant and you absolutely 100% DO NOT USE WD-40. You can probably find a "lock lubricant" at a local hardware store.

Might help, might not. Worth a shot.

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civex t1_itwa7vp wrote

I have tried WD40, so I'll get a lock lubricant, instead. Thanks.

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