Turn the wrench clockwise or counterclockwise to move the lock backwards or forwards.
How to fix a upvc window lock mechanism.
Jammed or stuck upvc window removing the gearbox lock mechanism when you replace the gearbox you can insert the gearbox in the window frame the wrong way round.
Using a flat screwdriver grip the seal around the window frame and pull it out around the area of the window lock or push the seal down and out of its groove.
The truth is that upvc window repair is much easier than it looks.
Try the handle in the gearbox before you fit it in the window or just turn the gearbox through 180 degrees.
Jammed lock or lock is stuck.
When your upvc door or window lock gets jammed it normally is a result of a defective lock mechanism.
With the seal out of the way look along the gap where the seal was.
The key may not turn all the way in or will not turn the lock in some cases.
There are 2 main mechanical parts to its lock the euro profile cylinder and the multi point locking system.
If it turns freely and unlocks then the problem may lie in the multipoint lock.
And this will need replacing.
There is no need to remove it the whole way around just along the area of the window lock.
This will improve the seal and stop any drafts.
Upvc window benefits un plasticized polyvinyl chloride or upvc has become a very popular option among double glazing window installation companies as it presents many benefits when compared to other alternatives such as aluminium timber and hardwoods.
To rule out any problems with the cylinder try inserting your key and turn to unlock.
Use a torch if needed.
Turning the wrench clockwise will move the lock backwards farther out from the lock mechanism and increase the pressure exerted on the window when locked.
Now the seal has been removed use a torch to see into the now empty groove and insert a small allen key into the gap between the frame and sash.