Email me We took one of these a part, but I must say, I did not expect it to be functional at the end. I strongly recommend you DO NOT ATTEMPT THIS on a CPU that you care about. Count on damaging it, and if you don't well you have ended up lucky!
All that said let me explain the peices and how they are held together.
The fan is held to the heat sink using 4 small plastic clips. Removing this is very simple, just depress the edge of the clips. Replaing the fan if it became defective is the reason this is so simple. This picture shows where the clips are located.
The outside plastic cover of the Pentium II (the one with the cheesy hologram/label on it) is held to the metal back plate using four metal staking pins. This picture shows this relatively well. Getting this a part is very difficult and is one of the more risky part of taking this apart.
Next the heat sink itself is held to the backing plate using four rivot/screws. We tried many different screw drivers, torx drivers, allen keys everything I had to try and remove these. In the end we got out a hammer and a punch and drove them out. Very risky if you actually care about your CPU. Once the rivots were removed the heat sink came off the back plate easily. This picture shows where the rivots are located.
In the end I had the CPU apart, and could put a different heatsink/fan onto the processor, at great risk to the CPU!
Credit where credit it due ... the we mentioned above is myself and Lance Rissman.
Email me