Dell PowerEdge C5230 Hardware Owner's Manual page 121

Installing a Heat Sink/Shroud
1 Use a lint-free cloth, remove thermal grease from the heat sink.
2 Apply new thermal grease evenly to the center of the top new processor.
CAUTION:
Using excess thermal grease can cause grease to contact the
processor shield, which can cause contamination of the processor socket.
3 Position heat sink/shroud assembly at a slight tilt to ensure the heat
sink/shroud is inserted below the sled flange (see final installed view), then
lower the assembly onto the four supporting posts on the motherboard .
4 Align the four screws of the heatsink to the four threaded posts and tighten
the four screws .
Figure 3-28. Installing a Heat Sink/Shroud
Final installed view shown in the following illustration.
Installing System Components
121