Installing Cage Nuts, If Needed; Installing The Large Mounting Shelf And Spacer Bars - Juniper T4000 Quick Start Manual

T4000 Core Router Quick Start
8
Table 1: Four-Post Rack and Cabinet Mounting Hole Locations (continued)
Hole Distance Above U Division
42 24.26 in. (61.6
cm)
33 19.01 in. (48.3
cm)
24 13.76 in. (34.9
cm)
15 8.51 in. (21.6
cm)
12 6.76 in. (17.1
cm)
9 5.01 in. (12.7
cm)
6 3.26 in. (8.3
cm)
3 1.51 in. (3.8 cm)
2 0.88 in. (2.2
cm)
To install the mounting hardware for a four-post rack or cabinet:
Installing Cage Nuts, If Needed on page 8
Installing the Large Mounting Shelf and Spacer Bars on page 8
Installing the Small Mounting Shelf on page 9
Removing the Center-Mounting Brackets on page 9

Installing Cage Nuts, If Needed

For racks without threaded holes, you must install cage nuts in the locations specified in
Table 1 on page 7:
On each front rack rail, install cage nuts for the large shelf and spacer bars.
On each rear rack rail, install cage nuts for the small shelf.

Installing the Large Mounting Shelf and Spacer Bars

On the front side of each front rail, partially insert a mounting screw into the lowest
1.
hole specified in Table 1 on page 7
Install the large shelf on the front side of the front rack rails. Rest the bottom slot in
2.
each flange on one of the mounting screws.
Large Shelf
13.86 U –
10.86 U –
7.86 U –
4.86 U –
3.86 U –
2.86 U –
1.86 U –
0.86 U -
0.5 U x
for the large shelf.
Copyright © 2012, Juniper Networks, Inc.
Spacer Bars Small Shelf
x –
x -
x –
x x
– x
– x
x x
– x
– –