Apple Xserve Intel (Late 2006) DIY Procedure for Heatsink - Manual (Page 8)

Xserve (Late 2006) Processor Heat Sink Replacement Instructions 
Use the edge of the package that the alcohol wipe came in as a spatula to spread the
thermal grease evenly over the entire top surface of the processor. Scrape off any excess
grease with the package edge, then discard the package.
Holding the processor by its edges only, replace the processor into its holder on the logic
board.
Note: When installing the processor on the logic board, align the processor notch with the
tab on the processor holder, as illustrated. Then lower the processor straight down onto the
socket.
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