HP ProLiant SL250s Gen8 Maintenance And Service Manual page 46

Remove the thermal interface protective cover from the heatsink.
2.
CAUTION: Heatsink retaining screws should be tightened or loosened in diagonally opposite
pairs (in an "X" pattern). Do not overtighten the screws as this can damage the board, connectors,
or screws. Use the wrench supplied with the system to reduce the possibility of overtightening the
screws.
Install the heatsink:
3.
Position the heatsink on the processor backplate.
a.
Tighten one pair of diagonally opposite screws halfway, and then tighten the other pair of screws.
b.
Finish the installation by completely tightening the screws in the same sequence.
c.
Install the processor air baffle.
4.
Install the front GPU bracket.
5.
Install the interposer board assembly.
6.
Install the front GPU cage.
7.
Removal and replacement procedures 46