COBHAM SEA TEL 9711IMA-70, Installation Manual

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9711IMA-70 Installation
3-1
3. Installation
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.
3.1. 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
222 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.
3.2. Preparation
It is recommended that you do not unpack the crates until you are ready to sub-assemble and install the
equipment. Assure that you have a large, flat, level, open area to sub-assembly the baseframe, pedestal, dish/feed
and the upper & lower sections of the radome. This area should be clean and free of debris (refer to the
Installation chapters of Antenna and Antenna Control Unit manuals).
We recommend that you place the crates in the area that you have chosen to assembly each of these major
components.
EAR Controlled - ECCN EAR99