Apple mac pro early 2009 User Manual

Mac Pro (Early 2009) Take Apart — Processor Heatsinks, 8 Core 161 2010-09-27
5 To position heatsink 
screws, lightly tighten  
them (4 lb.-in. or  
0.452 Nm torque) in 
order shown, using no 
more than two turns 
of driver per screw.
Note: While 
positioning screws, 
keep heatsink level 
by holding it in 
place with one hand. 
Reminder: Hold 
heatsink by its sides. 
Never press down 
on the top of the 
heatsink.
6 To secure heatsink 
to processor, again 
tighten screws (8 lb.- 
in. or 0.904 Nm 
torque)...

Mac Pro (Early 2009) Take Apart — Processor Heatsink, Quad Core 162 2010-09-27
First Steps
Open computer, lay it 
down with access side 
facing up, and remove:
• Processor tray
Tools
• ESD wrist strap
• Long-handled, 
magnetized 3 mm 
flathead hex driver
Processor Heatsink, Quad Core
Note: This procedure applies to the Mac Pro (Early 2009) quad-core processor configuration. For 
the 8-core processor configuration, see “Processor Heatsinks, 8 Core.”
Important: Mac Pro (Early 2009) quad-core processors...

Mac Pro (Early 2009) Take Apart — Processor Heatsink, Quad Core 163 2010-09-27
Removal
1 Using hex screwdriver, 
loosen 5 captive 
mounting screws in 
order shown.
2 Lift heatsink straight 
up out of enclosure.
Reassembly
Important: Do steps 1–3 
with processor REMOVED 
from processor board. 
See “Processor, Quad 
Core.”
Every time you remove 
a processor, even for a 
few seconds, cover the 
processor socket with 
a connector cap. Spare 
caps are packed with 
replacement parts.  

Mac Pro (Early 2009) Take Apart — Processor Heatsink, Quad Core 164 2010-09-27
1 Using alcohol pad 
included with 
replacement part, 
clean off thermal 
grease from 
underside of heatsink 
and top of processor.
2 Using syringe of 
thermal grease 
included with 
replacement part, 
apply narrow bead of 
grease to processor 
chip (raised square on 
top of processor). 
Apply in pattern 
illustrated, using 
approximately 0.2 cc.
Warning: Do not 
apply more grease 
than recommended. 
Grease must not 
overflow...

Mac Pro (Early 2009) Take Apart — Processor Heatsink, Quad Core 165 2010-09-27
4 Carefully align holes 
on underside of 
heatsink with 
mounting posts in 
processor board, and 
lower heatsink 
straight down onto 
processor. Double-
check posts to make 
sure heatsink is 
seated properly.
Warning: Use two 
hands to hold 
heatsink by its sides. 
Be careful of heatsink 
fins, as they can be 
sharp. Do not press 
down on the top of 
the heatsink.  

Mac Pro (Early 2009) Take Apart — Processor Heatsink, Quad Core 166 2010-09-27
5 To position heatsink 
screws 1–5, lightly 
tighten  them (4 lb.-in. 
or 0.452 Nm torque) 
in order shown, using 
no more than two 
turns of driver per 
screw.
Note: While 
positioning screws, 
keep heatsink level 
by holding it in 
place with one hand. 
Reminder: Hold 
heatsink by its sides. 
Never press down 
on the top of the 
heatsink.
6 To secure heatsink 
to processor, again 
tighten screws 1–4 
(8 lb.-in. or 0.904 Nm...

Mac Pro (Early 2009) Take Apart — Processor, 8 Core 167 2010-09-27
First Steps
Open computer, lay it 
down with access side 
facing up, and remove:
• Processor tray
• Processor heatsink,  
8 core
Tools
• ESD wrist strap
Processor, 8 Core
Note: This procedure applies to Mac Pro (Early 2009) 8-core processor configurations. For quad-
core processor configuration, see “Processor, Quad Core.”
Important: Mac Pro (Early 2009) 8-core processors require thermal grease for proper operation. 
Every time you remove...

Mac Pro (Early 2009) Take Apart — Processor, 8 Core 168 2010-09-27
Removal
1 Remove retaining 
frame from processor.
Important: Do not touch 
components on processor 
top or bottom. Hold 
processor only by the 
edges. 
Also do not touch 
gold pins in processor 
connector on processor 
board.
2 Lift processor straight 
up from connector on 
processor board.  

Mac Pro (Early 2009) Take Apart — Processor, 8 Core 169 2010-09-27
Reassembly
Important: Do steps 1–3 
with processor REMOVED 
from processor board.
Every time you remove 
a processor, even for a 
few seconds, cover the 
processor socket with 
a connector cap. Spare 
caps are packed with 
replacement parts.
1 Using alcohol pad 
included with 
heatsink, processor, or 
processor board 
replacement part, 
clean off used thermal 
grease from 
underside of heatsink 
and top of processor.
Note: Also clean...

Mac Pro (Early 2009) Take Apart — Processor, 8 Core 170 2010-09-27
2 Using syringe of 
thermal grease 
included with 
replacement part, 
apply narrow bead of 
grease to processor 
chip (raised square on 
top of processor). 
Apply in pattern 
illustrated, using 
approximately 0.1 cc.
Warning: Do not 
apply more grease 
than recommended. 
Also do not allow 
grease to come 
in contact with 
processor frame. 
Grease must not 
overflow into 
processor connector.
3 Place processor in 
connector on 
processor...