Lenovo 6457 - ThinkPad T61 - Core 2 Duo 2.5 GHz Hardware Maintenance Manual page 96

Table 28. Installation of the fan assembly
When installing:
v Before you attach the fan assembly to the computer, apply thermal grease, at an
v Make sure that the fan connector is attached firmly.
v When attaching the fan assembly to the frame, take care not to damage the heat
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ThinkPad T61 and T61p (15.4-inch widescreen) Hardware Maintenance Manual
amount of 0.2 grams, on the part marked a as in the following figure. Either
too much or too less application of grease can cause a thermal problem due to
imperfect contact with a component. In some modes, you need to peel the thin
film off from the rubber b .
sink ( b ) of the fan assembly.
b
a
b