ViaSat 8116 Series, Инструкция по установке и эксплуатации

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INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED
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damage during installation. (This portion of the assembly will be
used to secure the assemblies together once mounted on the hub.)
NOTE
Every sixth truss must use a spar truss (item 3) instead of the
truss extension (item 2), see Figure 4-4.
21. Install threaded rod (item 10 in Figure 4-6) in each hole on every pad
on top of truss assembly using two washers (item 12) and four nuts
(item 11). Install another two nuts (item 11) 2-inches (5.1 cm) above
pad on each rod. (These threaded rods will be used to mount the
panels.)
WARNING
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The completed truss assembly weighs 1350 lbs
(612 kg). Use extreme care when hoisting the
completed truss assembly into position.
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22. Attach hoist to completed truss assembly and lift assembly to hub
(see Figure 4-3).
23. Align truss assembly to hub and secure with T-shims (items 23 and
24 in Figure 4-4), four bolts (item 106) eight washers (item 107), and
four nuts (item 108) at top and bottom of hub. (The T-shims will be
removed or more added to align the trusses.)
24. Assemble and install the remaining truss assemblies in accordance
with steps 1 through 23 and the following steps. When truss
assembly is secured to hub, secure truss assembly to preceding truss
assembly using the loose end of the intercostal and node assembly.
NOTE
Every sixth truss must use a spar truss (item 3) instead of the
truss extension (item 2), see Figure 4-4.
25. When all truss assemblies are installed, align truss assemblies using a
theodolite to within 3/8 inch (10 mm) laterally and vertically. Align
truss assembly to feed/panel mounting ring by adding or removing T-
shims.
26. Torque all fasteners (except nuts on panel rods) to the following
values:
3/4-inch Fasteners 260 ft-lbs (353 Nm)
5/8-inch Fasteners 150 ft-lbs (203 Nm)
1/2-inch Fasteners 76 ft-lbs (103 Nm)
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42S183D
SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA
4-17