RC Brushless spindle

[volcano]

... whatever bearings you use will need a preload on them to stop them from skidding. ....preload them with something like bellville washers.

As you already know, i read all yours conversation with blackburn mark an others about preloading when you was building your spindle. But everything is a little confusing to me, as English is not my language. So i draw a sketch in mspaint( 1000 words) to clear things. Simply answer to numbers with tight/loose relations between parts. For example, i think 2 and 3 are tight connections.
Then, please explain "preload". Is that, to tightening a housing cap with housing to press outer bearing ring, or something else?

I think it would be a great help for me and others to see all relations in one place, so thanks in advance.