141
(2)Tighten the four thumbscrews on the rear of the mounting shelf (2).
5Install the rack brackets to the rack by following the steps below:
(1)Align the rack brackets to the mounting rail until the six screw holes become visible.
(2)Secure the rack brackets to the mounting rails using six M4 x L8 metal screws and nuts (see page 137).
Tighten the screws but leave them loose enough to allow length adjustment when installing the mounting rails to the rack.
(3) Attach the other rack brackets to the remaining mounting rail.
