Comtech EF Data CST-5000 - Manual (Page 66)

Redundant System Installation CST-5000 C-Band Satellite Terminal
3–12 Rev. 9
(4) Repeat Steps 4.b.(1) through 4.b.(3) for each spring nut.
c. Using eight 5/16-18 x 1 inch (25 mm) bolts, 5/16 inch (8 mm) split
lockwashers, and 5/16 (8 mm) flat washers, loosely secure the pipe blocks to
the spring nuts.
Ensure the pipe blocks are installed with the long angle face inward, toward
the pipe, as illustrated.
DO NOT tighten the pipe block bolts until after mounting the RFTs on the
vertical pole. (See Step 6.e.)
5. Install the threaded rods as follows:
a. Install two spring nuts in both
20 inch (51 cm) unistruts
mounted on the RFT.
b. Install each spring nut as
follows:
(1) Place the spring nut in
the unistrut channel,
spring side down, with
its wide side parallel
with the unistrut
channel.
(2) Press down on the spring
nut to compress the
spring, and rotate the nut
90
° (i.e., perpendicular
to the unistrut).