chassis, you use the center-mounting brackets attached to the chassis. If you front-mount
the chassis, you use the front-mounting flanges, and must remove the center-mounting
brackets.
1.
Installing the Cage Nuts, if Needed on page 71
2.
Installing the Large Mounting Shelf on page 71
3.
Removing the Center-Mounting Brackets from the Chassis on page 72
4.
Removing the Spacer Bars on page 73
Installing the Cage Nuts, if Needed
1.
Check that cage nuts are installed in the mounting holes specified in
Table 28 on page 71
.
2.
Install cage nuts, if needed.
Table 28 on page 71
specifies the mounting holes in which you insert the mounting screws
(an X indicates a mounting hole location), and cage nuts if needed. The hole distances
are relative to one of the standard U divisions on the rack. For reference, the bottom of
all mounting shelves is at 0.04 in. (0.02 U) above a U division.
Table 28: Open-Frame Rack Mounting Hole Locations
Large Shelf
Distance Above U Division
Hole
X
19.50 U
34.13 in. (86.7 cm)
59
X
17.50 U
30.63 in. (77.8 cm)
53
X
16.50 U
28.88 in. (73.3 cm)
50
X
14.50 U
25.38 in. (64.5 cm)
44
X
13.50 U
23.63 in. (60.0 cm)
41
X
11.50 U
20.13 in. (51.1 cm)
35
X
10.50 U
18.38 in. (46.7 cm)
32
X
10.14 U
17.75 in. (45.1 cm)
31
Installing the Large Mounting Shelf
To install the large mounting shelf (see
Figure 35 on page 72
) in an open-frame rack:
1.
On the rear of each rack rail, partially insert a mounting screw into the lowest hole
specified in
Table 28 on page 71
for the large shelf.
2.
Install the large shelf on the rack. Rest the bottom slot of each flange on a mounting
screw.
71
Copyright © 2013, Juniper Networks, Inc.
Chapter 7: Installing the T4000 Router Mounting Hardware
Summary of Contents for T4000 -
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