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RN Installation Guide vIG_RN_CBRS_2021-08
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10
Physical Installation
Mounting
RN Chassis Bracket Assembly
The chassis bracket is attached directly to the RN unit prior to mounting on the
elevation bracket.
Step 1.
Align the screw holes of the chassis bracket with the 4 threaded holes
on the back of the RN.
Step 2.
Using an 8mm hex socket wrench, install the four screws.
Step 3.
With the bracket in the final position, torque 4 bolts with incremental
steps at approximately 40%, 70%, and 100% of full torque rating:
•
Following the torque sequence 1-2-3-4 shown below, torque all bolts to
values of approximately 40% (2.4 N-m or 1.7 lb-ft).
•
Continue with the same sequence for all bolts at approximately 70% (4.2
N-m or 3 lb-ft).
•
Repeat the torque sequence for all bolts until each bolt is stabilized at 6
N-m (4.4 lb-ft).
Step 4.
Partially install one screw on each elevation attachment tab on the
chassis bracket in the locations closest to the top of the RN unit. The
two screws should be screwed into the tabs enough that about 2 threads
are exposed coming out of the backside of each tab.
Figure 4: Attaching the Chassis Bracket
