HP ProLiant XL270d Gen9 Maintenance And Service Manual page 88

9. Install the processor socket cover on the failed system board.
10. Clean the old thermal grease from the heatsink and the top of the processor with the alcohol swab.
Allow the alcohol to evaporate before continuing.
11. Apply all the grease to the top of the processor in the following pattern to ensure even distribution.
12. Install the heatsink:
a. Position the heatsink on the processor backplate.
b. Tighten one pair of diagonally opposite screws halfway, and then tighten the other pair of screws.
c. Finish the installation by completely tightening the screws in the same sequence.
88 Removal and replacement procedures