Almost every man faced a situation where you need to change the lock on the metal front door. Such painstaking manipulations can be performed both independently and with the help of professional masters. The procedure itself consists of several key points, each of which needs to be carefully studied. Only in this case it will be possible to protect yourself from premature failure of the device.
Varieties of castles
The construction market has a huge range of door devices. All of them differ from each other in the installation method, secrecy, as well as the level of reliability. The higher all these parameters are, the more expensive the finished product will be.
There are several ways to install the door mechanism:
- Overhead. A key feature of this method is that the main part of the structure is located on the outer surface of the door. During the installation of such a castle difficulties are extremely rare.
- Built in. Such a device must be mounted in the door body itself at a certain production stage. Installing such a lock on your own is almost impossible, since you first need to disassemble the entire protective flap.
- Mortise. The lock is inserted into the door itself after pre-fetching.
The quality of the castle depends on its security and secrecy. Experts recommend not saving on such products, since the safety of personal property directly depends on them. On sale you can find the following categories of locks:
- Leverage.
- Cylindrical.
- Magnetic.
- Disk.
- Electronic.
- Code.
- Crossbar.
The most popular are lever and cylindrical products. The latter type of device consists of a powerful internal mechanism and a larva. The product is characterized by a high rate of secrecy. Level locks can be overhead and mortise. A huge advantage of the mechanism can be considered that in case of losing the key, you can avoid replacing the lock by changing only the larva. Since such products consist of code plates and a bulky core, the final level of safety depends on the number of levers.
Larva replacement
To solve this problem, it is not at all necessary to turn to specialists for help, since everything can be done with your own hands. You can change the lock cylinder of the entrance metal door in just a few minutes, since the process itself consists of two stages - dismantling the old and installing a working mechanism. To replace the secret, you need to prepare a roulette and a cross-shaped screwdriver. At the longest end of the door is a metal bar with three screws. The middle fastener is responsible for fixing the lock cylinder. It must be carefully removed to get the core of the device. The key must be pulled a little on itself, carefully removing the larva from the locking mechanism. This process can be simplified by pressing the cylinder on the back of the door. It is worth making sure that the internal mechanism does not fall to the floor. After this, you can proceed with the installation of a working larva. All actions are performed in reverse order.
Changing the lock on a metal front door can be quite difficult, as the mechanism material itself is very durable. In addition, different installation technologies can be involved in the work, since it all depends on the type of device. The most common mistakes can be avoided only if you follow all the recommendations of specialists.
Gear mechanism
Correctly changing the lock on a metal entrance door with such a locking device is quite difficult. The master will need to have patience. Doors must be open so that the crossbars are pushed inward to the maximum mark. After that, the key is removed and the handle, pads and deadbolt are removed. On the front side, you must unscrew all the screws that ensure reliable fastening of parts to the canvas. It remains to pry the plate on the front side to remove the main mechanism. The new castle must have the same parameters as the old one. The mechanism is installed in the reverse order.
Sliding Crossbar Device
Even an experienced craftsman to change the lock on the entrance metal door with such a mechanism can be extremely difficult. This is due to the fact that the canvas must first be removed from the hinges, and then open it. The entire lock is hidden in the inner compartment of the door. The working technique is standard, only you need to unhook the lower and upper crossbars with a wrench. When a new lock is installed, you need to return all the parts to their original place.
Cylinder assembly
Changing such a lock is the easiest. If it was possible to determine that the cause of the breakdown lies in the working cylinder, then the whole action plan will be slightly different from the classic version. The master must unscrew the locking screws from the front of the door. The key must be inserted into the lock to turn it 15 °. These manipulations allow you to push the tab inside the mechanism. Pulling a little on the key, you can pull out the larva. The bulk of the manipulation is completed. The slave cylinder is installed in the reverse order. If the locking screw does not match the hole allotted for it, then you need to move the larva.
To completely change the lock on the Chinese metal entrance door, it is necessary to remove the larva according to the standard scheme (the handle and protective plates are dismantled). If manufacturers provided for a special valve in the mechanism, then it must also be removed. From the front side of the door you need to unscrew the screws that fix the entire structure. A broken mechanism is removed from the blade after prying off the end plate. It remains only to install a working door mechanism. Similarly, you can change the lock on the metal entrance door with rivets.
Expert Advice
To not have to bother with replacing a broken lock, you need to know how to properly care for this mechanism. A few simple tips will help extend the life of such devices. The following recommendations are considered basic:
- Lubrication mechanism. Ordinary engine oil, as well as lubricants for door hinges, are excellent for this procedure. The composition should be applied directly to the door well, after which the key is inserted and immediately removed. At the final stage, the surface of the castle is wiped with a dry cloth.
- Cylinder cleaning. It is best to use a specialized product that protects metal parts well from moisture. The fluid is poured into the key cylinder and the key is immediately inserted. Such manipulations can qualitatively clean the product from existing dust and other debris. Excess funds are cleaned with a dry cloth.
- Crossbar cleaning. First of all, you need to open the door. The crossbars should be extended to the maximum, since they need to be cleaned and greased. To protect the tool evenly distributed throughout the mechanism, you need to turn the key several times.
If you periodically carry out these manipulations, then the acquired lock will serve much longer than specified by the manufacturer.