Replacement euro cylinder with thumb turn

[davecon70]

Hi everyone. This is always such a good resource - am hoping to get some advice.

I replaced my old cylinder lock on the back door as I’ve not had the keys for years and it’s only 1 star. It’s a 45-45 cylinder though isn’t flush either side- I think I could go 40-40.

Either way I ordered a 45-45 3 star cylinder lock off Amazon and fitted it. It’s very similar in style and shape to the original one but I’ve noticed that the lock doesn’t fully close (sticks out by about 2mm). Am wondering what I need to do to fix this and/or if I have to get the exact same brand as the original?

The first photo is with the new lock- the others are the original cylinder.

Thanks for any input.

 

[crank39]

Can't see how a replacement cylinder would cause the deadbolt not to retract fully and it's not going to hinder the operation of the door either, can you press the deadbolt in?

 

[davecon70]

Things just got a lot worse. I pushed the lock in bit so it was flushed and now the thumb won’t turn. To make matters worse I put the key in the other side to try and turn the lock from there and the key is stuck. I’ve spent the last hour trying to move it but no luck. I think the only option is a locksmith.

Ironically all this was down to not having a key to open the back door in emergency and now I have a broken lock with a key stuck in it.

 

[pcaouolte]

What happens if you put a magnet on the deadbolt and pull it back out a bit?

 

[JohnD]

What happens if you put a magnet on the deadbolt and pull it back out a bit?

That's a good idea

Or blu-tak

I would guess there is wear in the lock mechanism, as it would be difficult to fit a new cylinder wrong.

You can buy multipoint lock parts fairly easily, but there is pretty sure to be a local specialist in plastic door and window repairs (because they are not very reliable).

 

[opps]

I am not a locksmith...

I don't understand how you can "push it in a bit" given that there is a screw that holds the barrel in place... Did you put the retaining screw back in?

 

[JohnD]

If you loosen the central screw that holds the cylinder in place, can you jiggle it loose?

 

[aveatry]

From inside you should be able to take off the ring shape cover plate it might just unscrew and you might then see 2 screws that hold on the outside part, then once those are off you may get on better and at that stage there is a well known weak point on the cheap euro cylinder locks that you will have to google.

 

[aveatry]

If you loosen the central screw that holds the cylinder in place, can you jiggle it loose?

I think he is saying the door is locked shut so he wont be able to get to that
EDIT - not the case I see

 

[davecon70]

Yes the retaining screw is back in. The lock was brand new this week. A generic 3 star from Amazon. I noticed that it wasn’t particularly smooth to turn and that the lock did not seem to retract fully.

I removed the screw that holds the barrel and tried another longer screw in case that was the issue but couldn’t turn the lock. I put the original screw back in and still couldn’t turn it so I tried the key which has now become stuck. I cannot return it to the 12 o’clock position nor rotate the thumb turn.

 

[aveatry]

I am not a locksmith...

I don't understand how you can "push it in a bit" given that there is a screw that holds the barrel in place... Did you put the retaining screw back in?

He means the dead bolt that is shown in the first picture slightly sticking out.

 

[davecon70]

I think he is saying the door is locked shut so he wont be able to get to that

No the door is fortunately unlocked. I can remove the retaining screw and jiggle it around a fair bit but can’t turn the thumb turn to the point where I can pull the lock through. There’s also a key on the other side stuck there though that could be cut I guess.

 

[aveatry]

Sent you a PM

 

[JohnD]

Snap crackle and pop.

 

[davecon70]

Hello everyone. Thanks for your help yesterday. I had to work today which wasn’t ideal timing BUT I discovered that my home insurance has home emergency which covers broken locks. It was a bit of a wait but the locksmith arrived and wasn’t able to remove the key or use the thumb turn. He ended up having to break the lock and then after some drilling, excavation, hammering he got the other half out and replaced with a nice new flush lock. In theory the invoice should be covered by insurance but they couldn’t confirm that until after the job was complete and invoice sent.

Here’s the interesting bit- I called Amazon and said that the lock they sold was faulty and as a result I had to call out a locksmith. They’ve refunded the lock but also will pay any charges incurred for the replacement. I was quite blown away by this!