XC90 FWD L6-3.2L VIN 96 B6324S2 (2010)
Use the abrasive cloth along the flange as the arrows indicate.
Steps 7-9 apply only to S40/V50
7. Remove the filter on the bleed nipple.
8. Remove the bleed nipple. Use a mandrel and a hammer.
9. Countersink the surface at the bleed hole to prevent the hole from becoming blocked by sealing compound. Use special tool 9814112.
10. Measure 3 mm (approx 1/8") from the inside of the flange and make a line with a permanent marker.
This procedure can be made easier by making a template which can be reused for several repairs.