Cisco 12406 Replacement Instructions Manual page 26

Use two persons to support the chassis while a third person removes the screws securing the chassis to
Step 3
the equipment rack.
Caution Follow the safe lifting guidelines as outlined in Statement 5 of the Regulatory Compliance and Safety
Information for Cisco 12000 Series Routers publication (Document Number 78-4347-xx) while lifting
the chassis and setting it safely aside.
Removing the Chassis When the Chassis is Mounted Using the Center-Mount Brackets
If the chassis is installed using the center-mount brackets, see
the chassis from the equipment rack:
Step 1 Ensure that all cables are disconnected and moved out of the way.
Note the positions of the rack-mounting screws on the defective chassis and mark the same screw holes
Step 2
on the rack-mounting flanges of the replacement chassis.
This step helps you align the replacement chassis with the narrow upper center-mount brackets when you
insert the replacement chassis into the rack.
Step 3 Loosen, but do not remove, the screws that attach the chassis to the center-mount brackets.
Step 4 Use two persons to support the chassis while a third person removes the screws securing the chassis to
the equipment rack.
Caution Follow the safe lifting guidelines as outlined in Statement 5 of the Regulatory Compliance and Safety
Information for Cisco 12000 Series Routers publication (Document Number 78-4347-xx) while lifting
the chassis and setting it safely aside.
Cisco 12006 and Cisco 12406 Router Chassis Replacement Instructions
26
Figure 18 and follow these steps to remove
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