Lenovo M5800 Desktop - Manual (Page 96)

5. The system fan is attached to the chassis by four rubber mounts. Remove the system fan by breaking or
cutting the rubber mounts and gently pulling the system fan out of the chassis.
Note: The new system fan will have four new rubber mounts attached.
Figure 28. Removing the system fan
6. Install the new system fan by aligning the new rubber mounts with the corresponding holes in the
chassis and push the rubber mounts through the holes.
90 Lenovo M5800 Hardware Maintenance Manual