HP ProLiant DL60 Gen9 Maintenance And Service Manual page 51

Press and hold the processor retaining bracket in place, and then close each processor locking lever.
3.
Press only in the area indicated on the processor retaining bracket.
Clean the old thermal grease from the heatsink with the alcohol swab. Allow the alcohol to evaporate
4.
before continuing.
Apply all the grease to the top of the processor in the following pattern to ensure even distribution.
5.
Install the heatsink:
6.
Tighten one pair of diagonally opposite screws halfway, and then tighten the other pair of screws.
a.
Removal and replacement procedures 51