Lenovo ThinkCentre 3026 Maintenance Instructions Manual page 138

5. Carefully remove the four screws 1 that secure the heat sink to the system
Figure 53. Removing the heat sink
6. Carefully lift the heat sink off the system board.
7. Position the new heat sink on the system board so that the four screws are
8. Alternate tightening each screw a small and equal amount until the heat sink is
9. Go to "Completing the parts replacement" on page 148.
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Hardware Maintenance Manual
board.
Note: Carefully remove the four screws from the system board to avoid any
possible damage to the system board. The four screws cannot be removed from
the heat sink.
Notes:
a. You might have to gently twist the heat sink to free it from the
microprocessor.
b. Do not touch the thermal grease while handling the heat sink.
aligned with the holes on the system board.
secured to the system board. Do not over-tighten the screws.