Dell Precision 340 - Manual (Page 49)

Heat Sink Removal—Mini-Tower Computer
5. Lift the heat sink or heat sink/blower assembly away from the microprocessor.
6. On the small desktop computer, remove the two screws on the blower to remove it from the heat sink.
1 securing clips (2) 4 heat sink
2 latches (2) 5 screws (2)
3 retention base 6 blower
1 securing clips (2) 4 ZIF socket
2 latches (2) 5 retention base
3 tabs (3) 6 heat sink
NOTICE: Gently rock the heat sink and then lift it to remove.
NOTICE: Do not discard the original heat sink and securing clips unless you are installing a microprocessor upgrade kit from Dell. If you are not installing
a microprocessor upgrade kit from Dell, reuse the original heat sink, blower, and securing clips when installing your new microprocessor.