Rear differential need to extract 50ml
Haldex / AOC remove 40ml - 35nm bolt torque
Be sure to use the specific Haldex fluid.
Angle / Bevle box extract 100ml ( other people have suggested 50ml )
I have never found a reliable source of information for this particular bevel box.
If you find a good source of info please do post up here.
I had some trouble finding the drain bolt location on my friend's xc90 as it was different to the Volvo diagrams so this thread may help you out:
https://www.volvoforums.org.uk/showthread.php?t=307634