Seagate Exos AP 4U100 Installation And Maintenance Manual page 65

b. Slide both mid rail slides smoothly on the ball bearing retainers until they are fully forward and engage the inner
leaf spring on the mid rail nearest the front mount bracket. Retention against the inner leaf spring is essential for
proper rail sequencing and full engagement of the mid rail on the inner rail.
Figure 48 Leaf spring latch engaged, extension of mid rail to fully forward and locked position
c. After releasing the safety lock on the outer rails, extend both left and right mid rails roughly 3 in. to 5 in. (7.62 cm
to 12.7 cm) beyond the rack cabinet opening.
d. Verify that both mid rails are the same distance from the rack cabinet face.
WARNING! To fine-tune any alignment adjustments, move only the storage enclosure or the mechanical lift. Do
not move the mid rails or the rack cabinet.
e. Fine-tune the alignment between the storage enclosure and that the rails, moving only the storage enclosure.
5. Complete the following actions to properly secure the storage enclosure on the rails:
a. a. Keep the storage enclosure stationary.
b. Verify that both rails are as far forward as possible and each engages the spring leaf at the very front of the rail.
c. Grasp the right ball bearing retainer, then continuously press it against the right mid rail to make sure it
continues to engage the spring leaf at the very front of the mid rail.
d. Continuously maintain pressure on the ball bearing retainer as you slide the mid rail onto the inner rail, beginning
with the top of the inner rail, then the bottom of the inner rail for the right side.
e. Continue maintaining pressure on ball bearing retainer while feeding the remainder of the mid rail onto the
storage enclosure inner rail until reaching the maximum extension of the right rail.
f. Repeat for the left side.
g. Verify full engagement, top and bottom, of the inner rails with the top and bottom ball bearing retainers.
h. Verify the mid rails slide freely and smoothly on the inner rails. If they do not, this indicates misalignment and
requires correction.
i. Slide both mid rails until they are fully extended in the service position and engage the safety lock.
6. Complete the following actions to begin insertion of the storage enclosure into the rack cabinet:
a. Facing the front of the enclosure, carefully exert even pressure on both sides of the storage enclosure front,
inserting the storage enclosure until it locks into the service position with an audible click.
b. Carefully and gently lower the mechanical lift just enough so that the weight of the storage enclosure fully rests
on the rack rails.
c. Thoroughly examine the rack rails for issues such as bowing, scraping, resistance, or other indicators of
misalignment.
Leaf spring
Installing the 4U100 enclosure 65