Test the lock by turning the key both right and left a few times and gently tug on the key when it is turned to both.
How to change a upvc door lock barrel.
Locate the cylinder retaining screw using the cylinder as a guide and remove screw.
Move the key slightly to the left and slightly to the right pulling the key towards you at the same time until you feel it release.
Put the key in the door barrel from the inside.
Open front door to reveal the face of the lock.
There are several types of cylinder locks.
Only remove the key from the lock once the retaining screw is secured back into place.
With a barrel lock it s the cylinder that allows the locking and unlocking of a door.
This will become more obvious as you turn the key as the euro cylinder will suddenly lunge towards you.
Slacken the handle screws.