Based on the last one, tweaked to suit...
Eurolocks are a modern pattern of cylinder deadlock. As well as key
operation, thumbturn cylinders are available, mainly for bathrooms.
Replacing a eurolock key cylinder is very easy, you just need to get
the right length of cylinder to suit the door thickness. The lock
cylinder can be replaced on its own, without removing the lock itself.
There are also other incompatible cylinder lock systems in use, such
as [[night latches|Replace a lock cylinder]].
Replacing the key cylinder is a very simple job, as long as you can
open the door. The lock itself isn't replaced.
Apart from the obvious...
A new cylinder is around £5 for a basic one, or £20 for one with 6
hardened pins in 2011. So replacement is sometimes cheaper than
copying keys. New cylinders usually come with 3 keys.
When moving into a house, you've no idea who has keys. Its prudent to
replace external cylinders.
Some house insurance policies are invalid if a cylinder with
unhardened pins is used on an external door. Such policies generally
require a eurolock to meet EN....
==The new cylinder==
[[image:Eurolock measurements 3978-3.jpg|right|250px]]
The main choice with new cylinders is what length you need. The
pictured one is called either 40-10-30 or 45-35.
Then you can have brass or chrome finish, and hardened or unhardened
pins, 5 or 6 pins, and key operated or thumbturn.
* Cheaper unhardened pin cylinders are easier to drill open
* house insurance often requires 6 hardened pins
* unhardened is usually preferable for internal rooms & cupboards,
easier to remove if keys are ever lost.
Its best not to have new locks, cylinders or keys posted to you, the
seller usually has your address, either from the delivery address or
credit card details, and there are people that copy keys and misuse
Used cylinders are just as secure as new, if the seller doesn't know
where you live. If it doesn't come with 3 keys, bear in mind the cost
of copies. If its for external use, check its stamped EN.
==How to replace==
[[image:Eurolock screw 5321-3.jpg|right|100px]]
[[image:Eurolock going in 3976-3.jpg|right|100px]]
Replacement is simple:
# Open the door
# remove the retaining screw
# Turning the key about 30 degrees in the right direction enables the
cylinder to slide right out.
# Insert key in new cylinder, turn it, and slide the cylinder into
place. If it catches, waggle it.
# Replace the retaining screw
Issues sometimes encountered:
If you're locked out and can't get in any other way, you can drill the
lock cylinder, or if there are no protection plates fitted, snap it in
two. if drilling, expect to ruin a few [[drill bit]]s in the process.
===Lock needs to accept old key===
In some situations you might need a new lock that takes the old key.
Rekeying a lock cylinder is a locksmith job.
The usual cause is a door that isn't correctly aligned with the frame,
resulting in a multilocking mechanism that isn't engaging 100%, thus
the lock refuses to engage readily.
[[Oil]]ing the cylinder is never the solution. It causes staining of
hands & clothing with dirty oil, and accumulation of muck inside the
lock that hinders operation.
===Key needs waggling===
If the key needs waggling to be able to turn, this is caused by a
poorly cut key copy. It can also happen on old lock cylinders that
have had a lot of use, and the mechanism is well worn.
===Key doesn't insert smoothly===
[[image:Key projections 5284-3.jpg|right|185px]]
The key needs waggling to insert, or is stiff to insert. Some keys
have a series of raised points between the pin landing areas as a
result of the way they're cut. This can cause keys to not go in
smoothly. The solution is to file these raised points on the key down
- obviously the pin landing areas must not be filed down.
In the picture to the right, the right key has these projections, the
left one doesn't. The 5 flat low points between the projections in the
right key are the pin landing areas.
===Key doesn't turn===
If a key just doesn't turn at all, its not uncommon for a copied key
to fail to work, due to a slight error in cutting.
* [[Replace a lock cylinder]]
* [[Special:Allpages|Wiki Contents]]
* [[Special:Categories|Wiki Subject Categories]]
* [[Door Security]]