Cisco recommends an install torque range for the unistrut bolts between 40 and 50 to in.-lb (between 4.52
N-m and 5.65 N-m).
Caution
Figure 95: Attaching the Unistrut, Grille Support, and Power Shutoff Extenders—Fixed Configuration Power Shown
Upper grille support
3
Left unistrut
1
Power shutoff extender (fixed configuration power only)
4
Right unistrut with cutaway at rear
2
Attaching the Upper Grille Support
Step 2
Attach the upper grille support (see previous figure) to the unistruts by inserting four M4x14-mm long flat head screws,
two for each unistrut, and tightening them to the unistruts with the screwdriver.
Attaching the Power Shelf Shutoff Extenders (fixed configuration power only)
Both fixed configuration power shelves must be installed in the chassis before installing the power shelf
shutoff extenders.
Note
Step 3
Attach the power shelf shutoff extenders (fixed configuration power only—number 3 in the previous figure) by inserting
the four M4 panhead screws, two for each power shelf shutoff extender, and tightening them with the screwdriver.
Attaching the Front Vertical Cable Troughs
Step 4
Attach the vertical cable troughs—one right and one left—to the front (PLIM) side of the chassis (as shown in the next
figure):
a) Tug all Velcro straps forward so that they are flush with the back side of the cable troughs (where the troughs attach
to the chassis) to ensure that the troughs fit flush to the chassis.
Cisco CRS Routers 16-Slot Line Card Chassis Installation Guide
177
Installing and Removing Exterior Cosmetic Components
Steps