Step 43
The 3.5 mm Phillips screw indicated below with a red circle may be absent in some models.
Remove the following 5 screws and 3 nuts from the heat sink:
One 3.5 mm Phillips from the lower left corner of the heat sink.
Three 6 mm Phillips from around the fan.
One 7.5 mm Phillips at the top right corner of the heat sink.
One 4 mm nut from the side of the heat sink.
Two 4 mm screw nuts with attached springs from either side of the heat sink.
Step 44
It may be necessary to soften the thermal paste between the logic board and heat sink. You can soften the thermal compound using a hairdryer. Move the hairdryer back and forth over the ribbed metal section of the heat sink for one minute. At this point, the heat sink should come free easily.
Use a spudger to pry the heat sink up on the left side, near the hard drive.
Step 45
Grasp the heat sink in one hand and lift up the hinge grill in the other hand so that you can remove the heat sink from the computer.