Thermal Grease - IBM System x3550 M4 Installation And User Manual

12. If you installed the second microprocessor, install the fourth and sixth fans (see
If you have other devices to install or remove, do so now. Otherwise, go to
"Completing the installation" on page 101.

Thermal grease

The thermal grease must be replaced whenever the heat sink has been removed
from the top of the microprocessor and is going to be reused or when debris is
found in the grease.
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IBM System x3550 M4 Type 7914: Installation and User's Guide
Attention:
v Do not set down the heat sink after you remove the plastic cover.
v Do not touch the thermal grease on the bottom of the heat sink after you
remove the plastic cover. Touching the thermal grease will contaminate it.
See "Thermal grease" for more information.
a. Remove the plastic protective cover from the bottom of the heat sink.
b. Position the heat sink over the microprocessor. The heat sink is keyed to
assist with proper alignment.
c. Align and place the heat sink on top of the microprocessor in the retention
bracket, thermal material side down.
d. Press firmly on the heat sink.
e. Rotate the heat sink retention module release lever to the closed position
and hook it underneath the lock tab.
"Installing a hot-swap fan assembly" on page 93).