Can the lock guard on the security door be oiled?

It can't be changed, and if you do, you have to open the combination lock and change it! The original code is right behind the doorknob! If you forget the password, just rotate the switch, there is a point A that can move the bolt slightly, and then rotate the switch, rotate clockwise to 12 and then counterclockwise back to A, see if you can open, start from 12, 11, 10 and try up to 12 times at a time.

Baodean: The lock guards are all on the back, and they can be sold in a lock store, and it will be O if you buy one.

You can directly disassemble the handle, just use the next two screws, after dismantling it is still used to open the lock guard method, first turn right, then turn left, and then turn in the process, to make the gap of the two small turntables against the small lock bolt on the lock guard, the important thing is to do the right turn number and the left turn number, to remember, very simple, adjusted, remember, do not look at the back, just look at the side of the lock device, with the number you find out first try again, if you can, just install it back on OK.

Rotate clockwise first and then counterclockwise.

The factory code is behind the doorknob, and if you forget the code, turn the switch. >>>More

If they're open, take the cylinder off, and use the pliers to turn the cylinder key and try to take it out, and you can give it a try.