Yes, 3KF 324SC
Point taken. I'm aware of this from the 3KF threads in the Patek section. Thank you for the reminder.
May I please double-confirm with you:
1. Pull out crown to time-setting mode
2. Press the area circled in black
3. Remove stem
Actually, does the stem position matter for this movement?
Your steps is correct , just to clarify
Gentle Press the stem removal button(hold it ) , then gentle pull the crown .
When re inserting , reverse the process , you may need to give a slight turn if it doesn't slide into position .
The keyless construction doesnt look like it matters but having it on time setting minimise chances of the yolk to slip of of position.