How to change the lock of the security door

Replacing the security door lock can choose to have a professional install it at your home, of course, you can also choose to do it yourself. How to change the lock cylinder of the anti-theft door can be divided into 8 steps: 1

Unscrew down the two screws on the upper and lower part of the pull handle panel; 2.Unscrew the screws on both sides of the lock cylinder sleeve; 3.Remove the lock cylinder anti-theft sleeve; 4.

Remove the old lock cylinder; 5.Install the handle after installing the lock cylinder anti-theft shell; 6.Install and close the inner and outer handles, and the outer handles should be held down by someone; 7.

Adjust the inner and outer handles, the screw holes should be aligned with the nut on that side, and the screws should be rotated after the light is aligned; 8.Insert the screws and tighten tightly. It is advisable to replace your lock cylinder in the following cases:

1.If you have a slotted key (generally Class A) with poor anti-theft performance, it is recommended to upgrade the lock cylinder. 2.

The lock cylinder also has a certain service life, and it is easy to find it difficult to unlock when it exceeds the service life, such as the card when unlocking. 3.Your lock cylinder has been filled with cooking oil or non-professional lubricant (which is easy to absorb metal chips and affect the opening of the lock cylinder), and the lock cylinder is generally lubricated with graphite.

1.Change it yourself, 30 yuan.

Buy a lock cylinder yourself and change it with a screwdriver, saving money.

2.Find a master to change, 80 yuan.

Find a lock shop and let him find a master to change, it will cost more.

It's best to find a manufacturer to change the lock cylinder, or find another dealer of the anti-theft door, which can generally be replaced!

Jinan is generally about 100 yuan.

First go and find a random key to the security door, and nine times out of ten you can open it.

Find the manufacturer after-sales service.

First, prepare a new lock cylinder.

Then remove the outside of the doorknob.

Unscrew the upper and lower screws.

Unscrew the two screws holding the lock cylinder in the door frame.

Replace it with a new cylinder.

Install the doorknobs in order.

Check the brand of your security door first, and then call the after-sales service company of that brand in your place. There are workers who come to change, and they have to disassemble the lock by themselves, and then remove the heaven and earth lock, and take out the lock, which is a little troublesome. After the sale, it will be done in a few minutes.

If there is no after-sales service company's phone, go to the door's sales shop to join the Yu system, the same.