HP ProLiant DL60 Gen9 User Manual page 59

Press and hold the processor retaining bracket in place, and then close each processor locking
10.
lever. Press only in the area indicated on the processor retaining bracket.
Remove the thermal interface protective cover from the heatsink.
11.
Install the heatsink:
12.
Tighten one pair of diagonally opposite screws halfway, and then tighten the other pair of screws.
a.
Hardware options installation 59