Dan , Luddite, thanks for your comments.
There is a cruch sleeve between the two bearings ....
When mounting the complete set (cleaned and oiled) and tighten the Nut by Hand , I can't feel any clearance ...
So if I doesn't get a specific torque info here, I will tighten the nut with something around 15 Nm and fix it .
I'm wondering that nobody had that question before , because anytime you replace the BB sealing on the pinion that Nut MUST be removed (and tighten afterwards).
