Western Digital Ultrastar ScaleUp SE4U102 User Manual page 136

User Guide
Figure 130: Slide Inner Rail
d.
Install the three special low-profile M4 x 3.2mm Philips screws provided to secure the inner
rail to the chassis.
e. Follow these steps for the second inner rail on the opposite side of the enclosure.
Step 21 : Install the outer rails into the rack. Pay special attention to which side is being installed. The
embossed R is for the right side and L is for the left side. Right and Left refer to when you are
facing the front of the rack.
a. Move to the rear of the rack.
b. Orient the rail so that the word "REAR" that is embossed into the metal of the rail is at the
rear end of the rack, and the release latch is facing the inside of the rack posts as shown in
the following image.
Figure 131: Rear Rail Latch Release Latch
c. Align the rail on the rack posts at the U-height desired for installation. The bottom of the rail
will be the lower most U of the total 4U height.
d. Pull the rail toward the rack post until the toolless latching mechanism engages the rack. The
latching mechanism may need to be pulled open to get around the rack post.
e. Move to the front of the rack.
Caution: When installing the inner rail onto the chassis, make sure to only use
the special Low-Profile M4 x 3.2mm Philips screws provided in the accessory
kit with the CMA. These screws should be tightened to .90-1.12 Nm / 8-10 in-
lbf using a # 2 Philips Screwdriver. These screws are specially designed for this
purpose. Using unapproved screws could cause damage to the slides inside
the rail.
3. Support
3.8 Rails Replacement
120