Replacing the lock on the front door - step by step instructions for different types of mechanisms

No matter how reliable and indestructible the locks on the front doors are, they have to be replaced periodically. All people need to know exactly in what situations they do it and how this work is done. In addition, the replacement of products may have its own nuances, depending on their design - this must also be taken into account.

Replacing the lock is absolutely necessary if a new door is purchased. In most cases, manufacturers do not complete it with locking devices. Therefore, the choice must be made by the residents themselves.But it is important to bear in mind that changing the lock on the front metal door in an apartment or a private house is necessary when losing keys. If at least one key is lost, the risk is high that attackers can use it. In the worst case, it turns out that the key did not disappear, but was simply stolen, and the robbery is already being prepared.

There are several other situations where even a new lock is required on an iron door:

• if the dwelling is given to new owners;
• if they buy an apartment or a house, and castles are old;
• departure of tenants and preparation for the arrival of new tenants;
• There are clear signs of preparing for hacking, taking impressions;
• the house or porch was chosen by a gang of thieves who had already successfully penetrated a number of apartments;
• in the new house installed locks from the developer, clearly not very perfect.

Since we are talking about the safety of people and property, we must pay great attention to the preparatory stage. The first step is to select the appropriate type of constipation. In any case, it is necessary to abandon the use of mounted structures. No matter how massive and strong they look, modern robbers have long learned to overcome this defense without keys and master keys with one brute force. Even for utility rooms, padlocks do not provide normal protection.

Laid on type of the lock is mounted from the inside of a cloth, the reciprocal part is put on a frame. The advantage of the design is ease of installation (it does not violate the integrity of the sash). But these products are not suitable for steel doors. Designers are also dissatisfied with them - the aesthetic characteristics of doors with such constipation deteriorate sharply. In most cases, the overlay lock performs a supporting role.

Mortise modifications, as follows from their name, are installed in the cavity of the leaf. These products are quite reliable and well protected from hacking. There is no danger that the interior will be damaged. Mortise lock can be placed on plastic, and wooden, and metal doors.The category of security directly related to the level of secrecy is expressed in numbers 1-4 (the higher the value, the safer the device).

Selecting the appropriate modification of the lock, it is necessary to prepare a set of tools. Since you always have to drill holes, it is impossible to do without an electric drill.

In addition to it, use:

• saw;
• pliers;
• small scrap;
• screwdriver;
• jigsaw.

Its features has the replacement of locks of each type. Cylinder mechanism can be installed very easily, even if you do not contact the professionals. First you only need to buy a reliable device. The work is extremely simple: you only need to remove the single bolt. For this purpose, use a Phillips screwdriver. Competent selection of the mechanism begins with the removal of the previous device and its careful measurement.

In order not to be mistaken and put the appropriate type of mechanism, pay attention primarily to the distance from the edge of the body to the center point. You must also consider the length of the body. If you use a symmetrical lock with a length of 6.2 cm, the distance between the edge and the middle will be exactly 3.1 cm. You can insert a cylinder mechanism with a two-way lockwells. But it is allowed to use such devices, where the toggle switch is located opposite the well.

The core (larva) is perfectly replaced, even if different manufacturers make it and the lock. It is even possible to insert products that differ sharply in security. But we must take into account the importance of the length, which sets the size.

The most common cores are made, the size of which is:

• 6;
• 7;
• 8;
• 9 cm

Eliminate the selection error is very simple: you need to take into account the thickness of the lining. Asymmetric cylinders are used when a lock inset is needed on the door:

• with a porch;
• with decorative panels;
• entrance doors.

It is not always possible to find a piece that is ideally combined in size. But nevertheless it is worth using a design with the most close sizes. A deviation of more than 0.3 cm can lead to serious problems — either a protruding part will interfere, or a heavily buried part will make it difficult to open the door. It is recommended to use cores with a large number of combinations - they complicate the actions of criminals.

How exactly to disassemble the old cylinder lock, if it is embedded and tightly held in the canvas, tell the manufacturer's instructions.There can be no ready-made general instructions on this score. It is recommended to pick up all the old parts, and not to leave any parts inside. Then you can not be afraid of the mismatch of parts of the lock, malfunction or jamming. The hole cut in the door must be the same diameter as the cylinder.

This part is inserted outside. Then it is fixed using the mounting plates. Then insert the connecting rods. Be sure to leave some of the rod on the outside. The rod is used for stringing the remaining functional parts. In most cases, a button is placed on the surface of the case, pressing which releases the locking valve.

With all the popularity of cylinder locks to do only they can not. All professionals, including those from power structures, strongly recommend that at least two different locks should be installed on the entrance doors. In addition to the cylinder is best to use lever device. It is very important to install it by all the rules, otherwise even the most expensive construction will be almost useless.It is recommended to put the lock not lower than 90 and not higher than 110 cm above the floor.

Next you need to attach the lock to the door and note the location of the keyhole. It is obtained by drilling a sheet with a drill or cutting it with a grinder. Now you can put the locking device itself, fasten it and evaluate the performance. After completing this work, install the pad, insert the key to mark the place for attaching additional parts. When the pad is installed and fixed, it is imperative to check whether the lock is working smoothly.

It remains to mark the places where the bolts are. You can cut holes as a drill, and grinder - it depends on the availability of the tool and the skills to work with him. Those who have experience of similar works will spend up to 2 hours. But inexperienced masters can face a number of insurmountable problems.To solve them successfully and get reliable protection of the house against invasion, it is sometimes more correct to turn to professionals.

This procedure is a bit more complicated than working with suvaldnyh models. But to know its features is at least because it is such locks that are often used in the latest versions of steel doors. They allow you to reliably protect against most hacking attempts. All work is performed only after removing the door from the hinges. Additionally, you will have to disassemble the canvas.

It should be noted that the standard size lock bolt does not exist. Products that are installed in garages and in residential buildings may have different sizes. Differences may relate to the shape, the location of the slots on 1 or 2 sides, the angle of inclination. All this is required to analyze in advance before purchase. The list of necessary tools is the same as in other cases.

As always, first determine the place of installation of the castle. Oriented to a height that will allow you to use it with maximum convenience. Next, mark the point where they will drill holes. In this case, you must be guided by the contours on which the key will be mounted.When marking up the end of the door, carefully watch how thick the locking device is.

Rectangular contour (outer border of the castle) is marked with holes. Especially carefully show the upper and lower lines. Most experts believe that the rectangle in the metal is required to cut the grinder. And if it is not, it is advisable to apply files. This hand tool also allows you to do the job, although you have to spend more effort.

Next, check whether the lock is put in place. As the professionals say, preliminary fixation is made. Then it must be removed and noted where the key is. Next, take a drill and drill a keyhole. Now you need to re-install the lock with sliding bolts.

Before replacing locks, it is imperative to determine which type of locking device is already installed. Best of all, if a lock of the same type with an old lock is put in place - this will reduce the amount of work. Since all owners are interested in simplifying the subsequent repair, it is advisable to give preference to structures that have an internal secret. You can fix them (with rare exceptions) without disassembling the entire device, without dismantling it. Choosing to replace the level lock, you need to buy models with as many levers as possible (this immediately increases reliability).

Let us analyze once again the nuances of replacing each type of lock. When working with cylinder devices, it is recommended to have riveting and a gun ready for their use. When removing the larva, they gradually pull the pinwheel toward themselves, while at the same time trying to unfold it. Removing the details will be extremely simple, as soon as the tongue takes the desired position. Otherwise, it is necessary to act if the cylinder is made according to the “key – key” system. In this case:

• insert the key into the well;
• scroll a little (at an angle of 10 to 15 degrees);
• pull it on themselves.

Next, remove the screws holding the handles themselves on both sides. When the handles are removed, a square steel bar will be found. It is removed to gain access to the swivel mechanism. It remains to remove the screws located in the end of the case. After that, you can already shoot the case itself. Conduct measurements of the larvae, parts of the body and handles. The measured values ​​will allow you to more accurately select the appropriate design. If it is necessary to make opening from the inside easier, models of locks with a turntable are preferable. For your information: the handle bar should be at least equal in length and width to the previously used handles. All of these points are typical for working with locks of any well-known manufacturers.

We must not forget that the fastening screws at the bottom of the pressure knob must be tightened. When the installation is completed, they assess how the handles work, how the lock operates on both sides. This is required when the door is open. Then the slightest error in the work will be visible immediately. A similar test is carried out after the door is closed. It is often found that something is interfering with the crossbars. Putting a layer of toothpaste on them, try again.A mark will appear, indicating where and how much metal to remove. You need to remove it with a grinder, but as carefully as possible. It is better to repeat the procedure several times than to remove too much material.

When done correctly, the mechanism works extremely smoothly. Turn the handle or scroll the key - and there is no slightest feeling that somewhere that clings, slows down the course of the working parts. No need to press, press down the canvas, with an effort to rotate the key or the handle. But since usually cylinder locks in the entrance doors are used together with lever handles, we must also look at the specifics of working with this mechanism. If the trim plates are held in place by rivets, it is recommended to drill them out.

Like the cylinder lock, the lock is the most correct to change for an exact analogue. And yet it is worth remembering that it is often required to slightly widen the holes. For this work will have to use a roller cutter. Verification of the result is simple: both inside and outside, the key must easily enter the well. If this condition is met, you can attach the lock to the door completely (for example, using rivets).

Both cylinder and lever locks are the most difficult to change in a metal door. Adjustment of the bore holes is significantly complicated or even completely impossible. To eliminate the problems associated with this, you must always buy a lock directly from the company that manufactured the door itself. If this is not possible, you should be interested in the list of compatible models. In some cases, it is necessary to replace not the whole lock, but only its individual parts.

In addition to the two main types of locks, it is useful to pay attention to the “invisible” type structures. They are significantly better in cracking resistance. Professionals are advised to always think about the strength not only of constipation, but also the door. Sometimes the box itself also has to be strengthened. But even if this is not necessary, it is necessary to work so that the change of the lock does not weaken the canvas.As for disk models of locks, they are divided into two types - automatic and semi-automatic. In both cases, there is a larva. It is changed in case of damage, but it is still worth replacing the mechanism completely. If the cylinder lock handle broke, you can restrict its replacement. Regardless of the type of device when the structure is worn, it is necessary to replace it entirely.

Level locks made abroad cannot be "simply" replaced. You will need to recode the device and pick up new keys. Russian models are changing, so recoding is not practiced in them. It is important to take into account such a moment: all the decorative parts of accessories that do not prevent the replacement of part of the lock can be left in place. The main lock is usually placed under the handle or directly above it. If in the cylinder lock it is necessary to change the case, begin with opening of the mechanism. Crossbars must be fully retracted. Now you need to pull the cylinder, remove the handles, valves and armor plate. But the lining covering the keyhole, you can not touch. But it is necessary to remove the end screws - in different designs of 2 or 4.

After completing this step, hook the lock on the end plate and carefully remove it. Instead, a similar product is placed in the opened cavity. As in other cases, it is best to buy a lock case of the same model in order to simplify your work. Almost always it will be reduced to performing the same actions, only in the reverse order. Only in a few cases it is necessary to grind metal or wood, expanding the entrance channels.

Of course, if the instruction requires a different approach, you can violate any of the rules described above. Owners of lever locks, manufactured by Cisa, may not change the mechanism at all. All they need is to take advantage of the device’s multiple transcoding function. The new code is determined by exchangeable keys, which will have to be purchased additionally. In some cases, even replacing the lock with a completely new one and installing it correctly does not help.

So, if the door opens hard, it is necessary to check - perhaps not the constipation is skewed, but the box itself. Sometimes tight key movement is caused by clogging of the well. It is enough to clean it and lubricate it properly, so as not to recall the problem for several months or even years.If you have to change the larva, it is recommended to measure the thickness of the doors along with a layer of insulation - then it will be possible to more accurately estimate the required length of the part.

Disc, as well as cruciform mechanisms, it is fully justified to change it entirely. All the same, no matter what good parts are selected, no matter how carefully the repairmen work, soon new defects will appear. If the spacer mechanisms break, you will have to remove the door from the hinges, and then disassemble the canvas. It is recommended to choose the larvae of the same color as the door itself. Then they will stand out less and will definitely not spoil the interior.

How to replace the lock on the front door with your own hands, see the next video.