COBHAM Sea Tel 9711-56 IMA C Band, Installation Manual

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Sea Tel 9711-56 IMA Installation in 168” Radome
5-1
EAR Controlled - ECCN EAR99
5. Installation in 168” Radome
This section contains instructions for unpacking, final assembly and installation of the equipment. It is highly
recommended that final assembly and installation of the Antenna system be performed by trained technicians.
Read this complete chapter before starting.
5.1. General Cautions & Warnings
WARNING: Assure that all nut and bolt assemblies are tightened according to the tightening
torque values listed below:
SAE Bolt Size Inch Pounds Metric Bolt Size Kg-cm
1/4-20 75 M6 75.3
5/l6-18 132 M8 150
3/8-16 236 M10 270
1/2-13 517 M12 430
NOTE: All nuts and bolts should be assembled using the appropriate Loctite thread-locker
product number for the thread size of the hardware.
Loctite # Description
223 Low strength for small fasteners.
242 Medium strength
638 High strength for Motor Shafts & Sprockets.
2760 Permanent strength for up to 1” diameter fasteners.
290 Wicking, High strength for fasteners which are already assembled.
WARNING: Hoisting with other than a webbed four-part sling may result in catastrophic
crushing of the radome. Refer to the specifications and drawings for the fully assembled
weight of your model antenna/radome and assure that equipment used to lift/hoist this
system is rated accordingly.
CAUTION: The antenna/radome assembly is very light for its size and is subject to large
swaying motions if hoisted under windy conditions. Always ensure that tag lines, attached to
the radome base frame, are attended while the antenna assembly is being hoisted to its
assigned location aboard ship.
5.2. Preparation
Read this entire assembly procedure before beginning.
Refer to the System Block diagram, General Assembly, Base Frame Assembly, Radome Assembly and
Radome Installation Arrangement drawings for your system.
We recommend that you place the crates in the area that you have chosen to assemble each of these major
components. It is recommended that you do not unpack the crates until you are ready to sub-assemble and
install the equipment.