Cisco APIC M3 Installation And Service Manual page 56

Replacing a CPU and Heatsink
Figure 20: Removing the CPU/Heatsink Assembly
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Step 2 Separate the heatsink from the CPU assembly (the CPU assembly includes the CPU and the CPU carrier):
a) Place the heatsink with CPU assembly so that it is oriented upside-down as shown below.
Note the thermal-interface material (TIM) breaker location. TIM BREAKER is stamped on the CPU carrier next to
a small slot.
Cisco APIC M3/L3 Server Installation and Service Guide
48
Heatsink
Heatsink captive nuts (two on each side)
CPU carrier (below heatsink in this view)
CPU socket on motherboard
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T-30 Torx driver
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Maintaining the Server