Replacement of the lock in the metal door

The situation when it becomes necessary to change the lock in a metal door is infrequent, but it requires an immediate solution.

After all, the protection of housing and property is a function not only of the entrance door, but also of the castle.

Therefore, many homeowners do not want to trust such an important matter, as changing the castle, to strangers.

Replacement of the lock is necessary if:

• door is changed to a new one;
• lock out of order;
• weak, unreliable lock;
• keys were stolen;
• occurred by breaking the entrance door;
• there is a damage to the mechanism.

It is not too difficult to change the lock in a metal door independently.

But to master the process yourself, you first need to prepare theoretically, look for the right video, get acquainted with the device and understand the essence of the process to replace it.

Kinds of locks and their device

Specificity of replacement of the lockin the iron door is determined by the device of the lock itself.

Therefore, you first need to determine its type.

Video:

There are 3 types of locks:

1. Cylinder - the core of this type of locks has a cylindrical shape and is equipped with a special secret mechanism. The lock includes a larva( cylinder), an armored steel cover and a handle. Principle of operation - when the key is turned, the pins with which the mechanism is fitted fall into special indentations;
2. Disk - the secret element of the disk mechanism is a cylinder, inside which is a set of freely rotating discs. The key for the disk lock has a semicircular section. Open this type of lock is possible only if the cutouts on the key match in shape and size with the disk. If you use another key, the mechanism will block the rotation of the disks;
3. Suvaldny - a secret element of this type of locks are special plates, which are called suvalds. Each of the plates has special figured notches. The lock is opened only when the position of the teeth of the key coincides with the position of the plates.

Features of replacement of cylinder locks of a metal door

The cylinder-type system is considered the most convenient in terms of replacement, it is enough to change only the larva, and the main mechanism remains the same.

In addition, the cylinder lock is reliable, because the encryption elements that fill its larva do not lend themselves to opening with a master key.

There are several options for eliminating breakage in the cylinder lock. If the handle of the entrance metal door is broken, then only the handle needs to be changed.

If the key is broken or lost, then the larva of the lock is changed.

To change the cylinder, it is possible to take the following actions:

• Unscrew the locking screw located at the end;
• From the side of the room insert a key into the well and completely lock the lock;
• Then turn the key slightly and use it to remove the cylinder. If there is no key, you can use a drill;
• Now you need to buy a new cylinder, similar in size. Of particular importance is
• Distance from the dog to the outer edge of the larva;
• The new cylinder is inserted from the inside, after which it is again fixed with a locking screw.

In some cases, it is not enough to replace only the larva.

If the lock mechanism has worn out or has been damaged, the whole lock case must be changed.

Video:

For this you need:

• Fully open the lock;
• Remove the cylinder-larva in the same way as described above;
• Remove door handles, armored cover, and latches;
• Unscrew all end screws( usually 4 pieces);
• Pull out the mechanism. To install a new input lock, the actions are performed in the reverse order.

Work should be done slowly and with concentration. In a hurry or through carelessness, it is possible to damage not only the larva, but the entire mechanism of the locking system.

And then for its repair will have to spend much more time and effort.

Features of replacement of lock locks in a metal door

Suvald locks are among the most reliable in the level of security mechanism.

Experts believe that it is very difficult to crack the souseway system, it is almost impossible, given the large number of plates with special teeth.

But there are drawbacks. For example, the key that opens the plate system is large, which is not always convenient.

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In addition, the keyhole keyhole of the metal door is equipped with a hole that is too big to let in air and sounds.

Repair of the rig is also fraught with difficulties. First of all, because even with minor malfunctions, you need to change the whole mechanism completely.

Locking elements work in complete connection with the plates, so there can be no question of partial repair of the lock.

Foreign manufacturers are trying to find a solution to this problem.

Already now in the market appeared lock locks, the mechanism of which can be recoded when the key is replaced.

While domestic lock-up locks are not subject to conversion, and in the event of a key loss, a complete replacement of the mechanism is required.

This complicated procedure can be avoided only if the failure is insignificant, for example, the handle of the entrance metal door has broken off.

To fix the position, the handle must be replaced and you can continue to use the lock.

Stages of installing a new lock in the metal door

Before installing a new lock, you must dismantle the old one.

For this:

• Open the metal door and then open the door lock to the end, that is, the crossbars should be pushed as far as possible;
• Remove the key from the keyhole;
• We dismantle the door handles, the armored overlay and the bolt;
• We unscrew the screws in the end part of the locking system;
• Gradually remove the entire mechanism. For convenience, the lock is pushed under the end plate;
• We buy a new lock-up lock and install, performing all the actions in the reverse order. For better use, experts recommend choosing a lock of the same design or at least the same manufacturer.

Replacement of the lock of the metal door is not complicated, but takes a lot of time and requires diligence.

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Features of the replacement of the disc lock of the metal door

Disc locking systems are distinguished by a high degree of protection not only from breaking with the help of a master key, but also from power cracking by drilling.

In addition, disc locks are less likely to be clogged with dust, are protected from moisture penetration, are not afraid of low temperatures and have a high service life.

Replacing the disc lock is not difficult, especially if the design is made by a foreign manufacturer.

The problem of domestic disk-type locking systems is that their repair does not always seem appropriate.

Therefore, in the event of a malfunction in the domestic lock, it is recommended to replace it with a new lock.

If the disk lock is made by foreign manufacturers, then when it breaks, it makes sense to find the cause and eliminate it.

It is possible that for a good work of the disk lock it will be enough to replace its larva.

If the disc lock does not open properly, there may be a reason for the lack of lubrication in the internal mechanism.

If the grease does not help, it must be removed for diagnosis. To do this, it is enough to unscrew the end screw, then use a key to remove the overhead lock.

Then, unscrew another 2 screws, which secure the disk, and extract it.

After buying a new disk of a similar size, it is installed in the lock, performing all the actions in the reverse order.

As practice shows, to avoid problems with shut-off systems and at the same time to provide reliable housing protection, you can, if you do not save on the purchase of quality machinery.

A quality lock does not guarantee a complete absence of breakdowns, but will make them a rare and easily solvable phenomenon.