5. Measure the rail distance from the inside of the front mount bracket to inside of the back mount bracket to determine if it
matches the distance between rack posts.
Figure 7 Measurement of rail from rear to front mount bracket
6. If the distance does not match, relocate the rear mount bracket to within an inch of the post-to-post depth distance you
recorded and align the rear mount bracket holes to the demarked holes on the outer rail. For example, if you recorded 27.5
inches, you would use the 27- and 28-inch holes marked on the rails.
Figure 8 Sample adjusted distance for outer rail setscrews
7. Insert and tighten each setscrew with a #2 Phillips-head screwdriver to a torque of 12 lbf-in (1.36 N-m), then perform a fit
check to validate the correct rail length.
8. Repeat the process for the right outer rail, using the proper orientation for the rack cabinet and rail.
9. Turn over the right outer rail assembly to access the inner side of the rear outer rail, then locate the CMA B bracket
attachment holes.
IMPORTANT
Orient the rail with the bracket front to your right, the rounded rear of the bracket to your left, and the
outer rail away from you.
10. Select the CMA B bracket from the CMA box.
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