Intel SGI Altix 450 - Manual (Page 138)

116 007-4857-002
6: Maintenance and Upgrade Procedures
Figure 6-6 Removing a Fan From the IRU
3. Slide a new blower assembly completely into the open slot, see Figure 6-7.
4. Tighten the blower assembly screw to secure the new fan.
Screw
A
C
B
Loosen screw