How do you tighten a lock cylinder?

Also, how do you fix a cylinder lock?

Remove the old cylinder from your door:

1. Unscrew the main screw (red dot)
2. Place the key inside the cylinder and turn it to the left or right, to make sure that the carrier is parallel with the cylinder.
3. Push the cylinder out of the lock (maybe you need to push hard)

Also Know, how do I change a door lock cylinder? Steps

1. Remove the flat screw under the latch.
2. Turn the key a quarter of the way.
3. Pull on the key while pushing on the other side of the lock.
4. Turn the key and slide the new cylinder into the hole.
5. Screw the flat screw back in.
6. Test your key to make sure that it unlocks your door.

Accordingly, why is my door lock loose?

Lining up the Doorknobs In most cases, a door lock becomes loose simply due to the over-and-over torquing of turning the knobs. Over time, the screws work loose. You will need to line up the two halves of the doorknob assembly to make it easier to tighten the screws.

How do you fix a door handle that turns but doesn't open?

Door Knob Turns But Won't Open

1. Take knob/handle off the door.
2. Remove the thru spindle.
3. Place flat-head screwdriver in the gap you removed the spindle from.
4. Twist the screwdriver to see if the mechanism engages properly.