User Guide

Mac Pro Take Apart — Processor Heatsinks 68
Processor Heatsinks
Note: The processor heatsink requires thermal grease for proper operation. Every time you
remove the processor heatsink, you must replace the thermal grease. New grease and alcohol
wipes for cleaning o the previous grease are included with replacement processors and
logic boards. Instructions for applying the grease are included with this procedure. Note that
replacement processor heatsinks come with the grease already applied.
Tools
The only tool required for this procedure is a long-handled, magnetized 3 mm athead hex
screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 1 and • 2
PCI Express card installed in slot • 1
Any 12-inch PCI Express card• s
Top and bottom memory card• s
Processor heatsink cove• r
Front fan assembl• y