Huawei OceanStor V3 Series Quick Installation Manual page 8

(5) Fasten screws.
(7) Check the installation of the ball bearing guide
(6) Installing a ball bearing guide rail bracket.
rails.ng Hardware Installation
Check the distance between the left and right guide rails, and
ensure that the two templates can align and slot into the ball
bearing guide rails.
Check that the ball of the ball bearing guide rail has been
placed at the most front end of the middle rail.
Check that the edges of the middle rail and external rail are
at the same vertical plane.
8