Juniper MX960 Hardware Manual page 315

Figure 86: Removing the Two Left Acorn Nuts That Secure the Original Top Hat
3. With each hand on a front flange of the top hat, remove the top hat halfway by slowly sliding it straight
away from the chassis (see
Be prepared to support the full weight of the top hat (40 lbs [18 kg]).
4. With one hand on each side of the top hat, remove the top hat completely by slowly sliding it straight
away from the chassis (see
5. Set the top hat aside where it will not interfere with the remainder of the extended cable manager
installation procedure. The original top hat is no longer needed.
Figure 87 on page 300).
Figure 88 on page 301).
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