Apple Powerbank G4 manual

7.Apply approximately 0.3 to 0.5 cubic centimeter (cc) of T630 thermal gel (922-5929) to the center of the center mating surface on the heatsink. (The 10 cc dispenser may be graduated in milliliters. Note: A milliliter (ml) is the same as a cubic centimeter (cc)).

Note: To apply the thermal gel from the 10 cubic centimeter (cc) dispenser, remove the end cap and push the plunger until the gel reaches the front opening. Note the position of the end of the plunger in the tube. Dispense the gel until the plunger end moves about 1/3 to 1/2 of 1 cc (ml). The plunger will move back slightly when pressure is released, so push it slightly beyond the amount to be dispensed.

Note: After installing new thermal material, if you must briefly re-separate the logic board from the heatsink, it is OK to retain the same, new material, as long as they are not handled excessively.

Logic Board PowerBook G4 (17-inch) Take Apart - 79