Cannot find why the (multipoint) lock is hard to turn (Ed.)

[svemula9]

Hi,

I moved to a house recently (7 yo build) it has a lockmaaster multipoint lock on my main wooden door.
The problem is when i shut the door and lift the handle to secure multipoint lock and turn the key it is very hard to turn and stucks in middle i have to either lift the handle very hard to engage the lock or use force while turning the key.

But when the door is not shut and i lift the handle to engage multipoint and turn the key it is smooth and the lock comes out goes in properly.

I am unable to figure out what could be the issue here. There is nothing the blocks in the lock hole on the frame.

Please help me understand the problem. I have ordered a smart lock and i want to fix that but i think this problem might create an issue.

Attached some pictures of the lock.

 

[blup]

The way the doors line up affect the lining up of the various lock bolts and claws in their respective "keeps". Eyeball it by almost closing the doors to spot where they are out of alignment, including top and bottom

 

[svemula9]

Thanks. I tried that. But the rubber shielding is blocking my sight there. Is there any other way to see the alignment issue.

 

[crank39]

First thing, the little circular bits that slide up and down when you lift the handle up, notice a little dash in the centre, with an allen key in the hole turn them all 90° so the dash is facing outwards, see if that helps. Secondly in your 3rd picture it shows 3 keeps, remove the middle one which is for the dead bolt then try the door see if that has made a difference

 

[blup]

Thanks. I tried that. But the rubber shielding is blocking my sight there. Is there any other way to see the alignment issue.

Remove the keeps one by one and identify the problem by a process of elimination

 

[JohnD]

When a multipoint is binding, you can often identify the tight parts.

Rub them with chalk.

Operate the mechanism

It will rub off where tight.

You can do a similar thing with Engineers Blue or lipstick, but those will stain your skin and clothes.

You can also look for rubbed-off tarnish on the parts.

 

[svemula9]

First thing, the little circular bits that slide up and down when you lift the handle up, notice a little dash in the centre, with an allen key in the hole turn them all 90° so the dash is facing outwards, see if that helps. Secondly in your 3rd picture it shows 3 keeps, remove the middle one which is for the dead bolt then try the door see if that has made a difference

Could not turn thr circular bits they are very hard to turn.

Remove the keeps one by one and identify the problem by a process of elimination

So i have removed the deadbolt keep but still same result so removed all 3 keeps and no luck either.

When a multipoint is binding, you can often identify the tight parts.

Rub them with chalk.

Operate the mechanism

It will rub off where tight.

You can do a similar thing with Engineers Blue or lipstick, but those will stain your skin and clothes.

You can also look for rubbed-off tarnish on the parts.

Tried with ink and putting some masking tape on the deadbolt keep but i do not see any marks on it.

Unable to guess what is going wrong here.

 

[svemula9]

Finally !! solved it...

The problem is with one of the keep bottom and top so had to do a trial and error by removing and fixing each one of the 7 keeps and fixed them by adjusting.

Thanks everyone for the support.


PS: Removed whole multi lock system and the mortice to drill a hole for the smart lock and installed them all back (with some difficulty though) but everything works like a charm now. Lately found that the Simpled Slim series smart lock that i installed does not care about the deadbolt.
So far so goo with the smart lock.
Ta