Remove The Fan - Lenovo 82V7008GIX Hardware Maintenance Manual

Figure 20. Disconnect the battery pack cable
Step 2. Loosen three screws and remove the heat sink.
Figure 21. Loosen three screws and remove the heat sink
Go to
https://support.lenovo.com/partslookup
replacement part:
Heat sink

Remove the fan

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 28
Step 1. Disconnect the battery pack cable and the fan cable from the system board.
to look up the Lenovo part numbers of the following
.
Chapter 4 Removing a FRU or CRU
39