How to change the larva in the door lock: signs of breakage and instructions for replacing

The door in most cases is a reliable barrier to the penetration of strangers into your home. And the security attached to this protection is a lock that tightly locks it in front of the nose of potential intruders. However, the lock is a rather complicated mechanism, subject to regular loads. And in the event that the door goes directly to the street, then the impacts from the weather. So over time, it certainly goes out of order, often blocking the entrance to the apartment, not only to "enemies", but also to the owners. And here it is important to know how to change the larva in the lock of the door, so as not to rush around in search of an exit from the current situation. I'm glad that any handy man can do this, knowing from what side they take the screwdriver.

When you have to change

The signs that your castle is jamming can be several:

1. The key does not turn. In some cases, it jams for half a turn, after which it is not possible to pull out the tool.
2. The key rotates, but for nothing, without affecting the locking mechanism.
3. The key jams. As an option - the door unlocks, but it can be pulled out only in an intermediate position.

The latter case can be considered the easiest. This is a "warning shot," followed by troubles. So you have time to think how to change the larva in the door lock, pick up a new one in size and do repair work in your spare time, and not in a hurry.

Causes of malfunctions

If you do not take into account the natural wear and tear of the lock, unforeseen troubles can arise under such circumstances:

1. The design is broken integrity as a result of attempts to disassemble it. The goal of such attempts may be an illiterate desire to just lubricate the constipation.
2. A lock on the lock, random or intentional (in an effort to slam the door tight), under the unsuccessful angle for the larva.
3. Trying to open the lock without a key, if you forgot it at home.
4. Hacking or his failed attempt.
5. Loss of the key - if none of your relatives or friends have a duplicate.

In all cases of incapacity of constipation it is necessary to decide what to change: the lock in the iron door or the larva. In most cases, the latter option is more advantageous, since it can be carried out independently, and the minimum cost is required. On most doors there are cylinder locks, on which the change of the "secrets" does not cause any difficulties. And especially it is relevant for locks like "crab", as changing the larva in the lock of the door will be much cheaper than the entire system: only a professional can cope with it, plus the price of works and spare parts is very high, and time will take a lot of replacement.

There are complex locks of increased reliability: there it is not recommended to climb a layman, although the replacement of the larva is possible. It is better to call the master: pay for the work, but do not spend on the castle as a whole.

When the larva is not replaceable

In some cases, you still have to change the lock entirely. They are primarily disk: discrete cylinder is often impossible to pick up.

In addition, there is a kind of lock, popular because of its reliability, but requiring a complete replacement. This is due to the fact that the code mechanism that provides the secret of opening is built right into the lock design. The larva itself is not present in it. Determine that you are dealing with such a locking device, easily by the key: it has an "antique" look, with wings on either side of the rod and a complex pattern on both. Here you can not even try to get by with little blood, but immediately prepare to replace the entire castle.

Instructions how to change the latch of the door lock

The first stage of action will be the removal of a failed mechanism. Completely disassemble and pull out the entire structure is not necessary. It is enough to unscrew the screw at the end of the lock (sometimes there are 2 of them), press on the exposed part and pull the cylinder. It will easily come out of the nest.

The second step: going to the building store with a grub and accurate selection of the cylinder. It should exactly coincide with the old not only in size, but also in the method of fastening.

The third stage is the installation of a new cylinder. To change the larva of the lock in a metal door, it must be brought into the socket in the same position as the old one, to fix there and fix the removed screws. Will only make sure that the lock again works properly.

The worst case

The worst thing is for someone who detects a breakdown, being outside and not being able to prepare for a replacement. First you need to try to get inside by alternative ways (for example, through the window) and try to open the entrance from the inside. If this is not possible, it will be necessary to drill the larva. The drill can be borrowed from neighbors or rented at the nearest hire, because before you change the larva in the door lock, it must be removed from there. A drill bit is inserted into the drill for metal, it is oriented at the location of the flag, and a hole is drilled to the middle of the lock. A screwdriver is inserted into the hole, which turns the flag. When the door is opened, the fixing bolt is screwed together, and the larva is pushed out of the socket. Further all - as described above: a new cylinder is bought and installed in place of the old one.

Lock on the car

Locks break down and on machines, often even faster than on the entrance doors. The owners of domestic transport suffer most often. Owners of classic models need to know exactly how to change the larva of the lock on the door of the VAZ, so as not to rewind the STO once again. The procedure is simple and easy to perform.

1. The outer handle is dismantled.
2. A pin-stop is pushed out with a screw or a thin Phillips screwdriver or strong wire.
3. On the inside, the lock leash is removed.
4. The spring on the larva is pierced by a screwdriver and removed.
5. The key is inserted into the lock and rotated half a turn for fixation. The keyed-up larva is removed.

Replacement - in reverse order.