Dell EMC PowerEdge R650 Installation And Service Manual page 79

Figure 65. Installing the processor and heat sink (PHM)
3. Set the anti-tilt wires to the locked position (outward position), and then using the Torx #T30 screwdriver, tighten the
screws (8 in-lbf) on the heat sink in the below sequence:
a. Tighten the first screw three turns.
b. Tighten the screw diagonally opposite to the screw you tighten first.
c. Repeat the procedure for the remaining two screws.
d. Return to the first screw to tighten it completely.
Figure 66. Set the anti-tilt wires to the locked position and tightening the screws
Installing and removing system components 79