Lenovo ThinkCentre A58e User Manual page 29

Note: The new system fan assembly comes together with four new rubber
mounts: two short rubber mounts and two long rubber mounts.
Figure 18. Installing the short rubber mounts
6. Install the two new long rubber mounts by pushing them through the holes on
the rear of the chassis. If necessary, pull the rubber mounts through the holes
from the inside of the chassis to make sure that the rubber mounts are installed
in place.
7. To install the new system fan assembly into the chassis, align the holes on the
new system fan assembly with the long rubber mounts in the chassis. Then,
push or pull the rubber mounts through the holes until the new system fan
assembly is secured in place.
Figure 19. Installing the system fan assembly
8. Connect the cable of the new system fan assembly to the system fan connector
on the system board.
9. Reinstall the hard disk drive if you have removed it.
What to do next:
v To work with another piece of hardware, go to the appropriate section.
v To complete the replacement, go to "Completing the parts replacement" on
page 24.
Chapter 2. Installing or replacing hardware
21