Lenovo 10A4 Hardware Maintenance Manual page 138

Note: The new rear fan assembly will have four new rubber mounts attached.
Figure 74. Removing the rear fan assembly
6. Install the new rear fan assembly by aligning the new rubber mounts with the corresponding holes in the
chassis and push the rubber mounts through the holes.
7. Pull on the tips of the rubber mounts until the rear fan assembly is secured in place.
130
ThinkCentre M83 and M93/p Hardware Maintenance Manual