How to replace the door lock

1. Identify the type of lock

To replace the lock without the need to rework the same type as was established. Now relevant and the most common two types: lever and cylinder. In appearance key and keyhole easy to determine which mechanism is used to lock the door.

cylinder

Such locks round the core with a thin and narrow keyhole slot. The key is a small, flat, with small notches or points on the edge or on the upper and lower plane.

Locking is performed by means of spring-loaded pins and the rotating core, which is blocked when key removed. When the key is inserted rods are raised to the desired height and hide in the body larvae, allowing it to freely rotate and open the lock.

Due to the design with removable mechanism secrecy cylinder locks can not change completely. Sufficient to establish a new core - and the old keys will not fit. Larvae have standard sizes and are compatible with all cylinder locks.

lever

Lever lock is easily recognized by a wider keyhole, which can even look. Keys - with a long round rod and a square plate with slits at its end.

The secrecy is provided by a set of levers with special slots that block the mechanism when the key is not in the wellbore. If slots on the inserted key matches the levers, when the rotation of the locking bolt is shifted and lock opens.

Unlike in the cylinder lever locks the mechanism of secrecy non-removable, so they will have to change completely. Exceptions are expensive options with the function of conversion, allowing to reconstruct the location of levers under the new set of keys.

2. Measure the dimensions of the castle

To do without adjusting the seat under the body, you need to buy the castle, the dimensions of which are identical to the old, or as close as possible to them. Otherwise, the mechanism does not fit in a door or holes in it will not coincide with the location of wells and other elements.

Here are the most important parameters that should be paid attention to:

• A - entry depth of crossbars in the door frame;
• B - the distance from the well center to the mounting plate;
• B - width of the crossbars from top to bottom;
• T - thickness mounting plate (lock);
• D - the diameter of the locking latch;
• E - height of mounting plate.

Ideally, it is best to lock the door on the second lock, or ask someone to keep watch apartmentAnd to dismantle the old mechanism and take it with you to the store. So you will pick up a new one with exactly the same parameters.

3. Buy new castle

Go to a building or a specialty store and buy a good lock, which corresponds exactly to the dimensions of the old.

If it's not, you can take the closest of parameters, but be prepared for the fact that it is necessary to expand the mounting hole in the door leaf and the slot for the crossbars to the door frame.

In any case, check in advance whether it is possible to exchange or return an item if it does not fit.

4. Remove the old castle

If the door two locks, depending on the location they are removed in different ways. The top is pulled out very easily, and that's the bottom, which has a handle, dismantle a little more complicated.

Cylinder locks are often used as the lower and the lever - located at the top, and serve as an extra. Rarely can be and vice versa.

cylinder lock

How to extract the core

• Open the door and locate the mounting bracket fixing screw. It is at the level of the keyhole by bolts.
• Phillips screwdriver completely remove the screw holding the larva. After that it will move in the housing bore.
• Insert key or use the handle and rotate inside the larva 15-20 degrees to the rotary cam secreted into the housing.
• Remove the core if necessary, slightly turning the key or the handle from side to side.

Removing the upper lock

• Remove the larva, as described above.
• If the lock is locked from the inside with the handle, remove it by unscrewing the Phillips screwdriver the fixing screws.
• The same tool, remove the remaining screws from mechanism end.
• Thin slotted screwdriver pry the mounting bracket and remove the lock from the door.

Removing the bottom lock

• Remove the larva, as described above.
• COMPLETE hexagon loosen the bottom of the handle on the outside of the door.
• Remove the decorative outlet (metal ring) with the internal handle. To do this, unscrew the threaded element by hand counterclockwise.
• Phillips screwdriver, unscrew the mounting knob flange screws that were hidden under the outlet.
• Gently pull the handle on itself with a square stem.
• Loosen the tightening screws lining the keyhole and remove protection.
• Phillips screwdriver, remove all the screws on the mounting plate. Pry and remove the latest lock body.

lever lock

Removing the upper lock

• Phillips screwdriver, remove all the fastening screws on the mounting plate of the castle from the end of the door.
• Hook body mechanism and remove it from the door leaf.

Removing the bottom lock

• COMPLETE hexagon loosen the bottom of the handle on the outside of the door.
• Remove the decorative ring on the handle on the inside.
• Phillips screwdriver to unscrew all the fixing screws of the flange of the internal handle.
• Pull the handle with the tetrahedron.
• Unscrew all the screws from the mechanism mounting plate.
• Pry the lock body and remove it from the slot in the door.

5. Install a new lock

To begin, try on his old place. If the lock is fully placed on the door, and all the mounting holes and grooves for the crossbars of the same - just set a new mechanism in the reverse order of removal.

At discrepancy landing size will have to fit the mounting holes and grooves. On the wooden door is made with a chisel on metal - a file. Keep in mind that the castle should not hang out after trimming. If the discrepancy is large, it may be worthwhile to go back to the store and choose a suitable model.

cylinder lock

How to install the core

• Turn the key or handle pivoting cam larvae so that it is hidden in the body.
• Insert the core into gear. Take care that the opening on the housing larvae coincided with the same hole in the mounting plate.
• Screw fastening screw core, first by hand, then Phillips screwdriver.

How to set the upper castle

• Insert the lock body to the proper place and screw the mounting plate. Screw them on the thread by hand, and then with a screwdriver.
• Install in the housing and fix it grub screw bolt.

How to install the lower castle

• Place the lock mechanism in the door leaf. Screw the mounting plate screws by hand, and then strengthen them Phillips screwdriver.
• Install covers the keyhole, and tighten the screws.
• Insert the handle with square pin into place. Tighten the mounting screws of the handle flange. Screw him rosettes clockwise.
• Hex lock fastener bottom outside handle.
• Insert the core into the case and secure it with the screw from the mounting plate.

lever lock

How to set the upper castle

• Insert the lock mechanism on the seat allotted to it.
• Tighten all the fixing screws on the mounting plate.

How to install the lower castle

• Insert the lock case in the door slot.
• Screw screw the mounting plate by hand, and then with a screwdriver.
• Install the inside handle with square pin on the proper place.
• Tighten the flange screws of the handle and push the top of the trim ring by turning it clockwise.
• Lock via fasteners hexagon bottom outside handle.