Things You'll Need

Instructions

1

Remove the screws that hold the knobs on the door with the screwdriver.
2

Remove the screws in the latch located on the edge of the door.
3

Inspect the inside of the lock knobs and latch for damaged working parts.
4

Spray the lubricant on the inside of both knobs and turn them to ensure they move freely.
5

Spray the lubricant on the latch and depress the latch bolt several times to distribute the lubricant inside the moving parts of the latch.
6

Wipe the excess lubricant off of the latch and knobs with a rag.
7

Reinstall the latch and screws in the door edge.
8

Reinstall the knobs by inserting the stem of the keyed side into the latch slot while aligning the threaded sleeves in the holes in the latch.
9

Install the knob screws and check the lock for smooth operation.