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CiscoASR 9000 Series Aggregation Services Router Hardware Installation Guide
Chapter2 Unpacking and Installing the Chassis
Installing Chassis Accessories
Step3 Install the plenum in the rack. Insert and tighten four customer-supplied screws to secure the plenum to
the front of the rack-post (two on each side). These screws can vary in size and type depending on the
rack that you use. Torque the screws to the weight specified for your particular rack. See Figure2-69 and
Figure 2-70.
Figure2-69 Plenum with Pre-Installed Front Mounting Brackets
Step4 Attach the rear rack-mounting brackets (part number: 700-47414-01) to the left and right sides of the
plenum base, using twelve 8-32 x 0.5 in. pan-head screws ((part number: 48-0828-01), six per bracket.
•If you are installing the chassis in a two-post rack, the rear rack-mounting brackets secure the
plenum to the rear of the rack-posts (Figure 2-70).
•If you are installing the chassis in a four-post rack, rotate the rear rack-mounting brackets by 180
degrees and attach to both sides of the plenum. The rear rack-mounting brackets secure the plenum
to the rear rack-posts.
Step5 Insert and tighten four customer-supplied screws to secure the plenum to the rear of the rack-post (two
on each side). These screws can vary in size and type depending on the rack that you use. Torque the
screws to the weight specified for your particular rack (Figure2-70).
1Front rack-mounting bracket, pre-installed