The majority of locks in the doorway are cut-in cylinder. Cylinder cylinders have number of the advantages doing them popular. The most important that in case of the output of the lock out of operation, it will not be necessary to change completely the lock, is only enough to replace larva – that cylinder. The majority of larvae are standard and interchangeable.
Instruction
1. To change the lock, it is necessary to buy the larva suitable by the sizes. If you do not know the size, at first dismantle old and together with it go to the market or in shop. This it is necessary not to be mistaken with length of larva as width most often one.
2. The first stage of replacement – removal of old cylinder. For this purpose it is necessary to insert key, to open door and to record it in comfortable position. Then the screw which hold edge plate needs to unscrew all. Find the screw holding larva in the fixed state. Most often it is located in the center of the lock near uvula. Then, turn key in the lock half, to such situation that the larva could be taken out freely from lock bed. The larva is taken. If there is no key, then it will be required with drill of 10-12 mm in the diameter. Drill of use of key.
3. The second stage – installation of new larva. For this purpose it will be required to repeat all operations stated above upside-down. Key turn larva so that it has freely entered lock bed. Fasten the central screw to record lock cylinder. Then from above on the lock the edge plate is imposed and screwed on old slots.
4. There are cylinder locks which are not demanding removal of larva. These are reprogrammable locks. In case of fault of the similar lock, buy new set with the chip. After insert of new keys in certain sequence, the code of the lock changes completely. These locks are very reliable, and it is impossible to try to them key therefore if you broke the lock, then it is worth thinking of installation of similar latching mechanism.