Disassembling the latch
- Unscrew the two half-inch sheet-metal screws from the bottom of the latch assembly and remove it from the body. Don't lose the spring.
- Gently, so as not to damage it, pry the cover off the knob with a knife, exposing the top of the stem.
- Pull the stem out and slip off the retaining ring. Be careful the stem doesn't slide back into its channel and get lost inside.