How to replace the lock cylinder of the security door

It's easy. Sequence of disassembling the lock cylinder:

1.Remove the inner and outer handle panels: Screw on the handle panel in the house, one on the top and one on the bottom.

2.Remove the inner and outer lock cylinder caps: The screws are on the lock cylinder caps in the house, which are the left and right sides of the key.

3.Dismantle the lock cylinder positioning screw: The screw is on the side of the door, in the middle of the deadbolt, at the same height as the lock cylinder. The thickest one is.

4.At this time, the old cylinder can be removed: the old and new cylinders are the same, and they can be replaced.

Install the new lock cylinder:

The order is reversed from when dismantling, and there are a few points to note:

1.Before installing the new lock cylinder, add a small amount of special lubricant to the new lock cylinder. Turn the key several times repeatedly.

2.The lock cylinder positioning screw must be tightened to prevent the screw from loosening and opening the door in the future.

3.Do not tighten the screws of the lock cylinder cap too tightly to prevent screaming and it is not easy to unlock.

4.When installing the inner handle panel, there is a safety bolt underneath, which should be inserted into the corresponding safety bolt hole.

You don't have to change it so much trouble to install a mobile phone door lock, I recommend Anerfa's brand.

<>Before replacing the lock cylinder of the security door, you should prepare the tools needed to replace the lock cylinder of the security door, such as a hammer, a Phillips screwdriver, a new lock cylinder, etc. When buying a new security door lock cylinder, you should choose a product with excellent quality and performance. Due to the short service life of poor quality lock cylinders, they are easy to be damaged, and need to be replaced frequently, which not only wastes money and time, but also affects the daily life of the owners.

When replacing the lock cylinder of the anti-theft door, you should use a plum screwdriver to unscrew and take out the upper and lower screws of the handle panel of the anti-theft door, and then unscrew and remove the screws of the anti-theft sleeve at both ends of the lock cylinder. After all the screws are removed, you can remove the lock and jujube cap of the anti-theft door.

Nowadays, many families will install anti-theft doors, which have both anti-theft and security performance, so they are liked by more people. If you don't know what to buy to install, the easiest way is to remove the broken one first, and take it to the building materials city or lock supermarket to find a professional to match.

How to change the step method of the lock cylinder of the anti-theft door.

1. First of all, unscrew down the pull handle and take the two screws on and below the board, after screwing, put the screws, unscrew off the lock cylinder and put the screws on both sides of the sleeve, but pay attention to the installation of these two screws do not screw too tightly, so as not to open the anti-theft door handle too tightly.

2. Remove the handle first, then remove the lock cap, put the lock cylinder into the sleeve and remove it, and put it together with the screws.

3. Screw out the screws that fix the lock cylinder, remove the lock cylinder, if you can not pull out the lock cylinder by hand to remove the screws, you must use the left or right lock of the ruler hammer to knock it down.

4. Install the lock cylinder anti-theft shell, and then install the handle, before installing the handle, insert the safety bolt, and then install the handle above.

5. Install the inner and outer handles, the outer handles should be held down by someone to help them, the two are symmetrical to cater to, adjust the inner and outer handles, the screw holes should be aligned with the nuts over there, or use a flashlight to light and then rotate the screws.

6. Insert the screws vertically, and when inserting the screws, aim at the nuts inside, fix the panel, tighten the screws, and pay attention to the screws not too tight.

7. Finally, try the effect, you can rotate the 360-degree sail by inserting the key to twist the insurance, and everything is completed after everything is normal.

Before replacement, we should prepare a lock cylinder of the same size and model so that our replacement work can be carried out smoothly. Secondly, we need to find the location of the lock cylinder of the anti-theft door, remove the corresponding screws, and then use the key to pull out the original lock cylinder from the door lock, so that the work of disassembling the old lock cylinder is completed. If, during the removal, we are unable to remove the cylinder, then we can simply use a hammer to gently tap around the lock.

After the disassembly is completed, we will then prepare for the installation of the new lock cylinder. We need to insert the safety bolt into the door lock first, and then close the inner and outer handles, preferably with someone who can help hold the outer handle, so that the door lock will not move during installation. In addition, we must ensure that the screw holes of the inner and outer handles are aligned before the screws can be screwed up.

In the installation, we need to pay attention not to tighten the screws outside the lock cylinder too tightly, we have to feel whether its tightness is appropriate while rotating (that is, to have a sense of activity when pressing the anti-theft shell), if the screws are too tight, then we will feel uncomfortable in use. In addition, when we insert the screws, we must insert them vertically, and if we do not align the nut inside, we need to gently shake the screw with our fingers. When the screws are screwed, the basic steps of changing the lock cylinder are completed, and finally we can insert the key into the lock cylinder and rotate it 360 degrees to see if it can open and twist smoothly!

1. You need to prepare the tools used for replacement, hammers, screwdrivers, and lock cylinder products that need to be replaced. Use a screwdriver to unscrew the screws of the anti-theft doorknob, and then unscrew the screws at both ends of the lock cylinder, and then you can remove the lock cap.

2. After the above operations are completed, you can remove the lock cylinder, if you can't remove it, you need to use a hammer to gently knock on the periphery of the lock cylinder until the lock cylinder can be removed.

3. The old lock cylinder is removed, you can install the new lock cylinder, first insert the safety bolt back, install the handle in place, and let people grab the outer handle when operating, so as to facilitate the installation of accurate and tight. The handle should be screwed in alignment before it can be tightened.

4. The installed screws need to be aligned with the door hole, if there is no vertical, you can shake the screws to quickly find the corresponding position. After screwing the door accessories, you need to check whether the lock is opened smoothly, whether the screws are tightened, etc., if you can't use it, you need to reinstall it.

The lock cylinder is easy to replace, first remove the old one, and buy a new one according to the old one. Then replace it and you're good to go.

The lock cylinder is easy to remove:

Tool: A Phillips screwdriver.

1. Disassemble the lock cylinder sequence:

1.Remove the inner and outer handle panels: Screw on the handle panel in the house, one on the top and one on the bottom.

2.Remove the inner and outer lock cylinder caps: The screws are on the lock cylinder caps in the house, which are the left and right sides of the key.

3.Dismantle the lock cylinder positioning screw: The screw is on the side of the door, in the middle of the deadbolt, at the same height as the lock cylinder. The thickest one is.

4.At this time, the old cylinder can be removed: the old and new cylinders are the same, and they can be replaced.

Buy a new lock cylinder, pay attention to the specifications and grade. The specifications you have to measure by yourself, and the grade is best Super B.

Suggestion: Try to use a super B-level lock cylinder (with a snake groove on the key).

The price of Taobao super B-grade lock cylinder is 70-100 yuan. If you find a professional repairer to replace it, it is generally 200 yuan.

Change the locks yourself, save money and be safe, and the first choice for the working class.

If you have a rich man, go to the repair master, they also have to live! It's scary for them to change careers.

Second, install the new lock cylinder:

The order is reversed from when dismantling, and there are a few points to note:

1.Before installing the new lock cylinder, add a small amount of special lubricant to the new lock cylinder. Turn the key several times repeatedly.

2.The lock cylinder positioning screw must be tightened to prevent the screw from loosening and opening the door in the future.

3.Do not tighten the screws of the lock cylinder cap too tightly to prevent screaming and it is not easy to unlock.

4.When installing the inner handle panel, there is a safety bolt underneath, which should be inserted into the corresponding safety bolt hole.

First of all, remove the panel, remove 2 lock nails on the inner panel of the door lock, remove the upper and lower screws of the inner side panel, remove the inner handle panel, and then remove the lock cap and the outer handle, there is a screw in the middle of the stall of the lock body on the door side, between the deadbolts, take out this lock cylinder, and the lock cylinder can be taken out.

Broken anti-theft door lock? Teach you how to replace the lock cylinder of the security door, and quickly collect it for emergencies.

Find a locksmith to change, of course, if you have a strong ability to do it yourself, you can also change it yourself.

Quite simply, do you put the back of the lock unfit with 2 screws that fix the lock panel? You disassemble the 2 screws, the panel will be removed, and then you will see the front and back of the cover lock cylinder 2 covers, there are 2 screws on the two sides of the cover, disassemble and remove the cover plate, you will see the head of the lock cylinder, and then on the side of the lock on the side of the lock tongue there is a screw that fixes the lock cylinder (the screw in the horizontal position of the lock cylinder), remove the screws and then you remember to insert the lock cylinder The position of the lock cylinder must be horizontal, so that you can remove the lock cylinder, and then insert the lock cylinder according to the original lock cylinder position length after removing the lock cylinder. Then install it in the order you just dismantled, remember to install the iron rod of the shaft at the position of the lock handle when installing the panel, according to the method you just disassembled, (remember that there is a bolt below the panel to insert the hole where the bolt is placed), and there may be a new lock cylinder that is still inflexible, that is, the upper and lower tongues of your upper and lower connecting rods are rusty, if the installation is not flexible, you can disassemble the screws of the upper and lower deadbolts, take the cover of the deadbolt, and apply some oil.

The steps are as follows. 1. Use a tool to unscrew the screws of the handle panel and remove the lock cylinder anti-theft sleeve. 2. After the lock cylinder is removed, install the new lock cylinder back, and then install the handle.

3. At this time, you can install and close the inner and outer handles, and the outer handles should be held down when installing. 4. Adjust the inner and outer handles, align the screws with the screw holes and tighten them.

1. Remove the inner and outer handle panels: screw on the handle panel in the house, one on the top and one on the bottom. 2. Remove the inner and outer lock cylinder caps:

The screws are on the lock cylinder cap in the house, which is the left and right sides of the key. 3. Disassemble the lock cylinder positioning screw: the screw is on the side of the door, in the middle of the lock tongue, and the same height as the lock cylinder.

The thickest one is. 4. At this time, you can remove the old lock cylinder: the old and new lock cylinders are the same, and you can replace them.

END method Step 2 Install the new lock cylinder 1 Before installing the new lock cylinder, add a small amount of special lubricant to the new lock cylinder. Turn the key several times repeatedly. 2. The lock cylinder positioning screw must be tightened to prevent the screw from loosening and opening the door in the future.

3. Do not tighten the screws of the lock cylinder cap to prevent screaming and difficult to unlock. 4. When installing the inner handle panel, there is a safety bolt below, which should be inserted into the corresponding safety bolt hole.

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