Dell PowerEdge C5220 - Manual (Page 84)

84 Installing System Components
Installing a Heat Sink
1 Use a lint-free cloth, remove thermal grease from the heatsink.
2 Apply new thermal grease evenly to the center of the top new processor.
3 Place the new heatsink onto the system board .
4 Tighten the four captive screws on the heatsink .
Figure 3-10. Installing a heat sink
CAUTION: Using excess thermal grease can cause grease to contact the
processor shield, which can cause contamination of the processor socket.