Apple Xserve (Early 2008) DIY Procedure for Processor - Manual (Page 12)

Xserve (Late 2006/Early 2008) Processor Replacement Instructions 12
Replacing the Processor Heat Sink
Holding the heat sink by the slotted sides in one hand, reconnect the 2-pin thermal sensor 1.
cable for the heat sink to the logic board.
Note: Make sure the connector on the sensor cable is oriented as shown, with the gold
fingers facing up.
Carefully seat the heat sink over the processor, aligning the four screws with the holes in the 2.
logic board.
Tighten the four captive Phillips mounting screws for the heat sink in the order indicated 3.
below. Do not over-tighten the screws. If you have a torque driver, tighten the screws to 8
inch-pounds; otherwise, try to tighten the screws with equal pressure.
Repeat the steps above for the second heat sink. 4.