Fujitsu PRIMERGY CX2550 M6 Upgrade And Maintenance Manual page 197

Release the spring by finger. If impossible by finger, place a small flat
headed screwdriver between the clamp and the DIMM cooler tank.
Gently drag the clamp outwards to release the clamp from the VR
cooling block.
Figure 128: Removing the LC kit (1)
▶ Remove the four screws from the LC kit (see circles).
Figure 129: Removing the LC kit (2)
▶ Loosen the four captive screws for CPU 1 in a crossover pattern (4 to 1).
▶ Loosen the four captive screws for CPU 2 in a crossover pattern (4 to 1).
CPU 2
Upgrade and Maintenance Manual
Liquid cooling (LC)
CPU 1
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