IBM System x3550 M3 Type 4254

c. Lower the rear flange of the heat sink into the opening in the retainer
bracket and press down firmly on the front of the heat sink until it is seated
securely.
d. Rotate the heat-sink release lever to the closed position and hook it
underneath the lock tab.
8. Reinstall the microprocessor 2 air baffle (see “Installing the microprocessor 2 air
baffle” on page 106).
9. Install the sixth fan (see “Installing a hot-swap fan assembly” on page 80).
Results
If you have other devices to install or remove, do so now. Otherwise, go to
“Completing the installation” on page 106.
Figure 83. Thermal grease
Figure 84. Heat sink installation
104 IBM System x3550 M3 Type 4254 and 7944: Installation and User's Guide