Open front door to reveal the face of the lock.
How to change a upvc door lock barrel.
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.
This will become more obvious as you turn the key as the euro cylinder will suddenly lunge towards you.
Only remove the key from the lock once the retaining screw is secured back into place.
Put the key in the door barrel from the inside.
There are several types of cylinder locks.
Slacken the handle screws.
How to change a upvc door lock.
The one presented here is a.
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.