Comtech EF Data RSU-503 - Manual (Page 30)

Installation RSU-503 Redundancy Switch Unit
14 Rev. 8
(3) Release pressure on the spring nut.
(4) Repeat Steps 3.b.(1) through 3.b.(3) for each spring nut.
c. Lift the switch into position.
d. Using two 5/16-18
bolts, 5/16” split
lockwashers, and
5/16” flat washers,
bolt the spar bracket in
place.
d. Tighten the bolts
firmly.