Installing the Chassis into the Rack

After you have removed components as described in Removing Components from the Chassis, the chassis is light enough for a team of installers to lift into the rack.

Caution: The reduced weight of the chassis is approximately 80 lb (36 kg). Installing it into the rack still requires two people to lift and an additional person to secure the mounting screws. If you are installing multiple routers in a rack, install the lowest one first and proceed upward.

Perform the following procedures (see Figure 35):

1. If you are front-mounting the router, replace the center-mounting hardware on the chassis with front-mounting hardware as described in Choosing Front-Mounting or Center-Mounting.
2. With one person at the front and one at the back of the chassis, grasp the chassis, lift it, and position it at the correct height in the rack.

   Warning: To prevent injury, keep your back straight and lift with your legs, not your back. Avoid twisting your body as you lift. Balance the load evenly and be sure that your footing is solid.

3. Align the bottom hole in both front-mounting or center-mounting brackets with a hole in each rack rail, making sure the chassis is level.
4. Install one of the mounting screws provided (in the accessory box shipped with the router) into each of the two aligned holes. Use a Phillips screwdriver to tighten the screws.
5. Moving up each bracket, install three more screws in each front-mounting bracket or center-mounting bracket. The recommended installation pattern places the second screw a distance of 2 U (3.5 in. or 8.9 cm) above the first, the third screw 3 U (5.25 in. or 13.34 cm) above the second, and the fourth screw in the topmost hole in the bracket (2 U above the third screw).
6. Verify that all the mounting screws on one side of the rack are aligned with the mounting screws on the opposite side and that the router is level.
7. Loosen the thumbscrews on the lifting handle and remove it from the chassis.
8. Proceed to the instructions in Reinstalling Components into the Chassis.

Figure 35: Installing the Chassis in a Rack