Fujitsu PRIMERGY RX2540 M7 Upgrade And Maintenance Manual page 368

Processor (CPU)
Figure 225: Removing the heat sink
▶ Loosen the captive screws in the sequence printed on the heat sink (1 to 4)
by proceeding as follows:
Torque: 0.9 Nm - 1.0 Nm
▶ First, loosen the captive screws 4 and 3 completely.
▶ Loosen the captive screws 2 and 1 completely.
▶ Push the four latches inward.
368 Upgrade and Maintenance Manual RX2540 M7